Document Zbl 1272.74088

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H.</a>; <a href="/authors/cuadrado.n" title="Author Profile">Cuadrado, N.</a>; <a href="/authors/gebert.a" title="Author Profile">Gebert, A.</a>; <a href="/authors/baro.m-d" title="Author Profile">Baró, M. D.</a>; <a href="/authors/sort.j" title="Author Profile">Sort, J.</a></div> <h2 class="title"> <strong>Yielding and intrinsic plasticity of Ti-Zr-Ni-Cu-Be bulk metallic glass.</strong> <i>(English)</i> <a class="label nowrap" href="/1272.74088">Zbl 1272.74088</a> </h2> <div class="source"> <a href="/serials/106" title="Journal Profile">Int. J. Plast.</a> <a href="/?q=in%3A250484" title="Articles in this Issue">25, No. 8, 1540-1559 (2009)</a>. </div> <div class="abstract">Summary: Bulk metallic glass with composition Ti$_{40}$Zr$_{25}$Ni$_{8}$Cu$_{9}$Be$_{18}$ exhibits considerably high compressive yield stress, significant plasticity (with a concomitant vein-like fracture morphology) and relatively low density. Yielding and intrinsic plasticity of this alloy are discussed in terms of its thermal and elastic properties. An influence of normal stresses acting on the shear plane is evidenced by: (i) the fracture angle ($<45^\circ $) and (ii) finite-element simulations of nanoindentation curves, which require the use of a specific yield criterion, sensitive to local normal stresses acting on the shear plane, to properly match the experimental data. The ratio between hardness and compressive yield strength (constraint factor) is analyzed in terms of several models and is best adjusted using a modified expanding cavity model incorporating a pressure-sensitivity index defined by the Drucker-Prager yield criterion. Furthermore, comparative results from compression tests and nanoindentation reveal that deformation also causes strain softening, a phenomenon which is accompanied with the occurrence of serrated plastic flow and results in a so-called indentation size effect (ISE). A new approach to model the ISE of this metallic glass using the free volume concept is presented.</div> <div class="clear"></div> <br> <div class="citations"><div class="clear"><a href="/?q=rf%3A5572020">Cited in <strong>5</strong> Documents</a></div></div> <div class="classification"> <h3>MSC:</h3> <table><tr> <td> <a class="mono" href="/classification/?q=cc%3A74C99" title="MSC2020">74C99</a> </td> <td class="space"> Plastic materials, materials of stress-rate and internal-variable type </td> </tr><tr> <td> <a class="mono" href="/classification/?q=cc%3A74M25" title="MSC2020">74M25</a> </td> <td class="space"> Micromechanics of solids </td> </tr></table> </div><div class="keywords"> <h3>Keywords:</h3><a href="/?q=ut%3Ayield+condition">yield condition</a>; <a href="/?q=ut%3Aelastic-plastic+material">elastic-plastic material</a>; <a href="/?q=ut%3Ametallic+glass+material">metallic glass material</a>; <a href="/?q=ut%3Amechanical+testing">mechanical testing</a>; <a href="/?q=ut%3Ananoindentation">nanoindentation</a></div>  <div class="modal fade" id="metadataModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel"> <div class="modal-dialog" role="document"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button> <h4 class="modal-title" id="myModalLabel">Cite</h4> </div> <div class="modal-body"> <div class="form-group"> <label for="select-output" class="control-label">Format</label> <select id="select-output" class="form-control" aria-label="Select Metadata format"></select> </div> <div class="form-group"> <label for="metadataText" class="control-label">Result</label> <textarea class="form-control" id="metadataText" rows="10" style="min-width: 100%;max-width: 100%"></textarea> </div> <div id="metadata-alert" class="alert alert-danger" role="alert" style="display: none;">  </div> </div> <div class="modal-footer"> <button type="button" class="btn btn-primary" onclick="copyMetadata()">Copy to clipboard</button> <button type="button" class="btn btn-default" data-dismiss="modal">Close</button> </div> </div> </div> </div> <div class="functions clearfix"> <div class="function">  <a type="button" class="btn btn-default btn-xs pdf" data-toggle="modal" data-target="#metadataModal" data-itemtype="Zbl" data-itemname="Zbl 1272.74088" data-ciurl="/ci/05572020" data-biburl="/bibtex/05572020.bib" data-amsurl="/amsrefs/05572020.bib" data-xmlurl="/xml/05572020.xml" > Cite </a> <a class="btn btn-default btn-xs pdf" data-container="body" type="button" href="/pdf/05572020.pdf" title="Zbl 1272.74088 as PDF">Review PDF</a> </div> <div class="fulltexts"> <span class="fulltext">Full Text:</span> <a class="btn btn-default btn-xs" type="button" href="https://doi.org/10.1016/j.ijplas.2008.11.002" aria-label="DOI for “Yielding and intrinsic plasticity of Ti-Zr-Ni-Cu-Be bulk metallic glass”" title="10.1016/j.ijplas.2008.11.002">DOI</a> </div> <div class="sfx" style="float: right;"> </div> </div> <div class="references"> <h3>References:</h3> <table><tr> <td>[1]</td> <td class="space">Ai, K.; Dai, L. 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