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Effect of Co-doping on Polycrystalline Ni-Mn-Ga
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87356</div> </div> </div> </div> <div class="card publication-listing mt-3 mb-3"> <h5 class="card-header" style="font-size:.9rem">Effect of Co-doping on Polycrystalline Ni-Mn-Ga</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mahsa%20Namvari">Mahsa Namvari</a>, <a href="https://publications.waset.org/abstracts/search?q=Kari%20Ullakko"> Kari Ullakko</a> </p> <p class="card-text"><strong>Abstract:</strong></p> It is well-known that the Co-doping of ferromagnetic shape memory alloys (FSMAs) is a crucial tool to control their multifunctional properties. The present work investigates the use of small quantities of Co to fine-tune the transformation, structure, microstructure, mechanical and magnetic properties of the polycrystalline Ni₄₉.₈Mn₂₈.₅Ga₂₁.₇ (at.%) alloy, At Co concentrations of 1-1.5 at.%, a microstructure with an average grain size of about 2.00 mm was formed with a twin structure, enabling the experimental observation of magnetic-field-induced twin variant rearrangement. At higher levels of Co-doping, the grain size was essentially reduced, and the crystal structure of the martensitic phase became 2M martensite. The decreasing grain size and changing crystal structure are attributed to the progress of γ-phase precipitates. Alongside the academic aspect, the results of the present work point to the commercial advantage of fabricating 10M Co-doped Ni-Mn-Ga actuating elements made from large grains of polycrystalline ingots obtained by a standard melting facility instead of grown single crystals. <iframe src="https://publications.waset.org/abstracts/163892.pdf" style="width:100%; height:400px;" frameborder="0"></iframe> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ni-Mn-Ga" title="Ni-Mn-Ga">Ni-Mn-Ga</a>, <a href="https://publications.waset.org/abstracts/search?q=ferromagnetic%20shape%20memory" title=" ferromagnetic shape memory"> ferromagnetic shape memory</a>, <a href="https://publications.waset.org/abstracts/search?q=martensitic%20phase%20transformation" title=" martensitic phase transformation"> martensitic phase transformation</a>, <a href="https://publications.waset.org/abstracts/search?q=grain%20growth" title=" grain growth"> grain growth</a> </p> <a href="https://publications.waset.org/abstracts/163892/effect-of-co-doping-on-polycrystalline-ni-mn-ga" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163892.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">95</span> </span> </div> </div> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul class="list-unstyled"> About <li><a href="https://waset.org/page/support">About Us</a></li> <li><a href="https://waset.org/page/support#legal-information">Legal</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/WASET-16th-foundational-anniversary.pdf">WASET celebrates its 16th foundational anniversary</a></li> </ul> </div> <div class="col-md-2"> 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