Materials Science Forum Vol. 1116

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class="page-name-block underline-begin"> <h1 class="page-name-block-text">Materials Science Forum Vol. 1116</h1> </div> <div class="clearfix title-details"> <div class="papers-block-info col-lg-12"> <div class="row"> <div class="info-row-name normal-text-gray col-md-2 col-sm-3 col-xs-4"> <div class="row"> <p>DOI:</p> </div> </div> <div class="info-row-content semibold-middle-text col-md-10 col-sm-9 col-xs-8"> <div class="row"> <p><a href="https://doi.org/10.4028/v-iA5ByT">https://doi.org/10.4028/v-iA5ByT</a></p> </div> </div> </div> </div> <div id="titleMarcXmlLink" style="display: none" class="papers-block-info col-lg-12"> <div class="row"> <div class="info-row-name normal-text-gray col-md-2 col-sm-3 col-xs-4"> <div class="row"> <p>Export:</p> </div> </div> <div class="info-row-content semibold-middle-text col-md-10 col-sm-9 col-xs-8"> <div class="row"> <p><a href="/MSF.1116/marc.xml">MARCXML</a></p> </div> </div> </div> </div> <div class="papers-block-info col-lg-12"> <div class="row"> <div class="info-row-name normal-text-gray col-md-2 col-sm-3 col-xs-4"> <div class="row"> <p>ToC:</p> </div> </div> <div class="info-row-content semibold-middle-text col-md-10 col-sm-9 col-xs-8"> <div class="row"> <p><a href="/MSF.1116_toc.pdf">Table of Contents</a></p> </div> </div> </div> </div> </div> <div class="volume-tabs"> </div> <div class=""> <div class="volume-papers-page"> <div class="block-search-pagination clearfix"> <div class="block-search-volume"> <input id="paper-search" type="search" placeholder="Search" maxlength="65"> </div> <div class="pagination-container"><ul class="pagination"><li class="active"><span>1</span></li><li><a href="/MSF.1116/2">2</a></li><li class="PagedList-skipToNext"><a href="/MSF.1116/2" rel="next">></a></li></ul></div> </div> <div class="block-volume-title normal-text-gray"> <p> Paper Title <span>Page</span> </p> </div> <div class="item-block"> <div class="item-link"> <a href="/MSF.1116.-1">Preface</a> </div> </div> <div class="item-block"> <div class="item-link"> <a href="/MSF.1116.3">Investigation of the Behavior of Surface Roughness Suppression Orientation on the Inner Surface of Metal Microtubes Using Crystal Plasticity Finite Element Method</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Hayate Sakaguchi, Takuma Kishimoto, Takayuki Hama, Kenichi Tashima, Shinsuke Suzuki </div> </div> <div id="abstractTextBlock605086" class="volume-info volume-info-text volume-info-description"> Abstract: The objective of this study was to clarify whether the surface roughness suppression orientation actually suppresses surface roughness by using the crystal plasticity finite element method (CPFEM), which is based on the relationship between the surface roughness suppression orientation and deformation in the inner surface direction that we have clarified in the past. In order to simplify the calculation and reduce the computational cost, a model was created by embedding cylinders in a rectangular body, which was then divided into 1/4 for the analysis. A dislocation density increase model that takes work hardening into account was applied to the model, and values obtained from tensile tests were used for material constants. The model was divided into 2130 elements. The simulation results show that the surface roughness suppression orientation is actually more difficult to deform than its surroundings. </div> <div> <a data-readmore="{ block: '#abstractTextBlock605086', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 3 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/MSF.1116.9">Reduction of Surface Cracking for Al-4.6%Mg Strips Cast Surface Using an Unequal-Diameter Twin-Roll Caster by Back-Dam Plate with Lip</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Toshio Haga, Kazuki Yamazaki, Hisaki Watari, Shinichi Nishida </div> </div> <div id="abstractTextBlock604881" class="volume-info volume-info-text volume-info-description"> Abstract: Cracks occur on the surface of Al-Mg strips cast using a high-speed twin-roll caster. Surface cracking of the as-cast strip decreases with decreasing roll load. However, the difficulty of roll casting increases as the roll load is decreased because the strip becomes brittle and is easily broken because the strip is not completely solidified. In the present study, an unequal-diameter twin-roll caster, which is capable of high-speed casting, was used with a lip attached to a back-dam plate in an attempt to decrease surface cracking without deceasing the roll load. The thickness of the solidified layer was found to decrease as the length of the solidified region decreased. The thickness of the solidified layer at the center of the width direction of a strip on the lower roll decreased by shortening the solidification length by a lip attached to a back dam-plate. The solidified layer at the edges was thicker than that inside the cast strip. The thickness of semisolid metal inside the cast strip increased more than that at the edges of the roll bite. The roll load at the width of the lip decreased. The effect of the lip length on surface cracks was investigated. </div> <div> <a data-readmore="{ block: '#abstractTextBlock604881', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 9 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/MSF.1116.15">Investigation into Stress Relaxation and Creep Rate of C47200 Copper Alloy</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Saheed Akande, Tuoyo Ikomi, Temitayo Mufutau Azeez, Omolayo M. Ikumapayi </div> </div> <div id="abstractTextBlock593318" class="volume-info volume-info-text volume-info-description"> Abstract: Copper alloys have high thermal conductivity, relatively high mechanical strength, and toughness over a wide range of temperature; hence they are highly sorted for complex structural applications that required extreme heat flux under load. Creep of materials is classically associated with time-dependent plasticity under a constant stress/load at an elevated temperature, often greater than the absolute melting temperature. This research is aimed to study the evaluation of stress and creep rate in copper, identifying the mechanisms at which copper can easily be exposed to stress and creep deformations in structures. A 12 mm diameter copper rod with the composition of 52.05 % CuO and 30.26 % SnO<sub>2</sub> was procured locally. Samples from the procured rod were heat treated to 650<sup>°</sup>C for 30 minutes and cooled in the still air as well as inside the furnace. Creep test was carried out at 760uC with a constant load corresponding to an initial stress (between 1.5 MPa and 350 MPa) and stress relation was carried out on a 98 kN capacity stress relaxation frame (from 350 MPa to 300 MPa). Rockwell hardness test and metallographic analysis (at 200 mm) were also conducted on the heat treated and unheated control samples. It was established that heat treatment reduced the hardness property of stress relaxed copper, accelerated the stress relaxation process up to 60 %, speed up both primary creep rate and the tertiary creep rate as well altered the linear creep pattern and behaviour. </div> <div> <a data-readmore="{ block: '#abstractTextBlock593318', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 15 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/MSF.1116.27">Enhanced Microhardness and Corrosion Performance of Additively Manufactured Inconel 718 Specimens through Nanostructuring by Severe Plastic Deformation</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Shahir Y. Mohd Yusuf, Nur Hidayah Musa, Nurainaa Mazlan, Nong Gao </div> </div> <div id="abstractTextBlock604976" class="volume-info volume-info-text volume-info-description"> Abstract: Severe plastic deformation (SPD) processes, particularly high-pressure torsion (HPT) have been increasingly applied to metallic specimens fabricated by laser powder bed fusion (L-PBF) additive manufacturing (AM) for enhancing their mechanical and functional properties through nanoscale grain refinement (≤ 100 nm). In this study. L-PBF AM-fabricated Inconel 718 (IN 718) specimens are initially subjected to 10 HPT revolutions to produce nanosized grains. Subsequently, microstructural characterisation, as well as hardness and electrochemical tests are conducted to evaluate the evolution of microstructures, hardness, and corrosion performance of the as-received and HPT-processed specimens by using various microscopy, Vickers microhardness (HV) measurements, and corrosion performance, respectively. The results reveal an average grain size of ~ 46 nm, dense dislocation networks, and nanotwins after 10 HPT processing, which contribute to the two-fold hardness increase compared to the as-received condition. Such microstructures also contributed to the overall improved corrosion performance after 10 HPT processing, as quantified by the 83% and 73% reduction in corrosion rate and pitting potential, respectively. </div> <div> <a data-readmore="{ block: '#abstractTextBlock604976', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 27 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/MSF.1116.35">Processing Maps and Optimized Plastic Behavior Model of TC4 Titanium Alloy Diffusion Bonded Joint at α+β Region Temperatures</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Can Li, Yong Li, Xiao Xing Li, De Xin Zhang, Imran Sardar Muhammad, Yue Liu </div> </div> <div id="abstractTextBlock605092" class="volume-info volume-info-text volume-info-description"> Abstract: The hot processing maps and optimized Arrhenius constitutive model of the TC4 diffusion bonded joint were investigated based on high temperature tensile tests in the temperature range of 1024–1174 K and strain rate range of 0.0001–0.1 s<sup>–1</sup>. The optimal hot processing parameter in the tensile deformation mode was 0.0001–0.001 s<sup>–1</sup>/1124 K and 0.0001–0.1 s<sup>–1</sup>/1174 K, respectively, when the true strain was 0.2. A modified strain compensated Arrhenius-type constitutive model of the joint by combining the evolutionary algorithm and generalized reduced gradient was established. The values of correlation coefficient and average absolute relative error were 0.989 and 7.29%, respectively, indicating the good prediction capabilities. </div> <div> <a data-readmore="{ block: '#abstractTextBlock605092', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 35 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/MSF.1116.43">Effect of Roll Diameter on Temperature of Aluminum Alloy Strip during Casting Using a Vertical Type High Speed Twin Roll Caster</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Toshio Haga, Toshiaki Okamoto, Hisaki Watari, Shinichi Nishida </div> </div> <div id="abstractTextBlock604877" class="volume-info volume-info-text volume-info-description"> Abstract: The temperature of an aluminum alloy (Al-6%Si) strip cast using a vertical-type high-speed twin-roll caster was measured by inserting a K-type thermocouple into the strip. The effects of the roll diameter on supercooling, cooling rate, and temperature at the roll bite were investigated. It was found that the roll diameter affects the cooling condition of the strip. The thickness of the thermocouple was 0.1 mm and the sampling rate was 100 Hz. Copper rolls with diameters of 300 and 600 mm, respectively, were used. The roll width was 100 mm and the roll speed was 30 m/min. The roll load was 5 or 20 kN. </div> <div> <a data-readmore="{ block: '#abstractTextBlock604877', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 43 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/MSF.1116.51">High Efficiency Milling of Inconel 625 Alloy (Effect of Cutting Condition on Tool Life)</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Kazumasa Kawasaki, Ryuma Hasegawa </div> </div> <div id="abstractTextBlock605104" class="volume-info volume-info-text volume-info-description"> Abstract: Inconel 625 alloy consisting of Ni and Cr and others has advantageous properties such as heat resistance and corrosion resistance, which make it a suitable material for application in aerospace, energy, and marine industries. However, it is also a difficult-to-machine material because of factors such as work hardening, low thermal conductivity, and high tool affinity. Therefore, the problems of the tool wear, chipping, and adhesion often occur in milling of Inconel 625 alloy using end mills. In this study, the milling of Inconel 625 was conducted using coated cemented carbide end mills, and the cutting conditions with the high efficiency were investigated under three rotational speeds and four feed rates. The results showed that increasing the feed rate increased the surface roughness, but did not increase the tool life. In addition, the results also showed that increasing the rotational speed did not increase the tool life, but reduced the surface roughness. As a result, the effects of the rotational speeds and feed rates on the tool life were clarified. </div> <div> <a data-readmore="{ block: '#abstractTextBlock605104', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 51 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/MSF.1116.59">Mechanical and Microstructural Behavior of Sintered NiAl-Based High Entropy Alloy</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Emmanuel Olorundaisi, Bukola Joseph Babalola, Moipone Linda Teffo, Peter Apata Olubambi </div> </div> <div id="abstractTextBlock599631" class="volume-info volume-info-text volume-info-description"> Abstract: A high entropy Ni-Al-Ti-Mn-Co-Fe-Cr alloy (HEA) system was fabricated using spark plasma sintering (SPS). The alloys at different elemental compositions were developed at a sintering temperature of 850 °C, a heating rate of 90 °C/min, a pressure of 50 MPa, and a dwelling time of 5 min. The sintered alloys' mechanical characteristics, microstructure, phase evolution, and density were assessed. The evolved microstructure of the sintered HEAs shows a homogenous dispersion of the alloying metals. The sintered microstructures showed a mixture of simple and complex phases. The phase refinement shows that the sintered HEAs exhibited a lower and the least grain size of 2.28 µm compared to the Ni<sub>50</sub>Al<sub>50</sub> alloy having 8.26 µm. Likewise, a higher micro-strain value of 1.25E-1 was attained by the non-equal atomic HEA, while the unalloyed has 1.87E-3. The microhardness value of the sintered alloys varied from 103.5 HV to 139.2 HV, while their measured density varied from 5.23 g/cm<sup>3</sup> to 6.44 g/cm<sup>3</sup>. </div> <div> <a data-readmore="{ block: '#abstractTextBlock599631', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 59 </div> </div> <div class="item-block"> <div class="item-link"> <a href="/MSF.1116.71">The Influence of Cow’s Bone Calcium Concentration on the Mechanical Characteristics of a Mg-Al Alloy</a> </div> <div class="item-link volume-authors"> <div class="semibold-middle-text"> Authors: Temitayo Mufutau Azeez, Saheed Akande, Sunday Adeniran Afolalu, Adedotun Adetunla, Bernard Adaramola </div> </div> <div id="abstractTextBlock601247" class="volume-info volume-info-text volume-info-description"> Abstract: Magnesium aluminium of the magnesium-alloy variety have long been extensively utilized in different technical applications and are still capturing the attention of researchers because of their cost-effectiveness and lightness. Grain fractal sizes, microstructural relationships, and sphericity, as well as their relationship with service performance, were discovered for numerous frequently employed Mg-Al alloys. As a result, the influence of cow’s bone extracts calcium on the mechanical behaviours as well as microstructure of Magnesium aluminium alloy was investigated in this work. Calcium (0.5% weight) concentration, formations with uniform and non-uniform grain boundaries led to alloy hardening. 286.537MPa and 57.3 HB are respectively the highest tensile strength and hardness gotten. </div> <div> <a data-readmore="{ block: '#abstractTextBlock601247', lines: 2, expandText: '...more', collapseText: '...less' }"></a> </div> <div class="page-number semibold-large-text"> 71 </div> </div> <div class="block-bottom-pagination"> <div class="pager-info"> <p>Showing 1 to 10 of 18 Paper Titles</p> </div> <div class="pagination-container"><ul class="pagination"><li class="active"><span>1</span></li><li><a href="/MSF.1116/2">2</a></li><li class="PagedList-skipToNext"><a href="/MSF.1116/2" rel="next">></a></li></ul></div> </div> </div> </div> </div> </div> </div> </div> <div class="social-icon-popup"> <a href="https://www.facebook.com/Scientific.Net.Ltd/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon facebook-popup-icon social-icon"></i></a> <a href="https://twitter.com/Scientific_Net/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon twitter-popup-icon social-icon"></i></a> <a href="https://www.linkedin.com/company/scientificnet/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon linkedin-popup-icon social-icon"></i></a> </div> </div> <div class="sc-footer"> <div class="footer-fluid"> <div class="container"> <div class="row"> <div class="footer-menu col-md-12 col-sm-12 col-xs-12"> <ul class="list-inline menu-font"> <li><a href="/ForLibraries">For Libraries</a></li> <li><a href="/ForPublication/Paper">For Publication</a></li> <li><a href="/insights" target="_blank">Insights</a></li> <li><a href="/DocuCenter">Downloads</a></li> <li><a href="/Home/AboutUs">About Us</a></li> <li><a href="/PolicyAndEthics/PublishingPolicies">Policy & Ethics</a></li> <li><a href="/Home/Contacts">Contact Us</a></li> <li><a href="/Home/Imprint">Imprint</a></li> <li><a href="/Home/PrivacyPolicy">Privacy Policy</a></li> <li><a href="/Home/Sitemap">Sitemap</a></li> <li><a href="/Conferences">All Conferences</a></li> <li><a href="/special-issues">All Special Issues</a></li> <li><a href="/news/all">All News</a></li> <li><a href="/open-access-partners">Open Access Partners</a></li> </ul> </div> </div> </div> </div> <div class="line-footer"></div> <div class="footer-fluid"> <div class="container"> <div class="row"> <div class="col-xs-12"> <a href="https://www.facebook.com/Scientific.Net.Ltd/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon facebook-footer-icon social-icon"></i></a> <a href="https://twitter.com/Scientific_Net/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon twitter-footer-icon social-icon"></i></a> <a href="https://www.linkedin.com/company/scientificnet/" target="_blank" rel="noopener" title="Scientific.Net"><i class="inline-icon linkedin-footer-icon social-icon"></i></a> </div> </div> </div> </div> <div class="line-footer"></div> <div class="footer-fluid"> <div class="container"> <div class="row"> <div class="col-xs-12 footer-copyright"> <p> © 2025 Trans Tech Publications Ltd. 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Materials Science Forum Vol. 1116 | Scientific.Net