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2018年全国固体力学学术会议

作者：刘梦莹 Ian McCue michael j.demkowicz Department of Materials Science & Engineering Texas A&M University

To accelerate the development of new materials,high-throughput methods of assessing mechanical behavior are *** demonstrate a method to quantify flow uniformity by integrating small-scale indentation with digital image correlation(DIC).By correlating pre-and post-indentation surface images via DIC,we obtain in-plane strain distributions around the indent *** work is the first DIC analysis around small-scale indents with spatial resolution at the sub-micron *** method we demonstrate is suitable for rapid screening of materials for their propensity to undergo localized deformation.

关键词： Digital image correlation indentation in-plane deformation scanning electron microscopy mechanical behavior

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A high-throughput technique for determining grain boundary character non-destructively in microstructures with throughthickness grains

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npj Computational Materials 2016年第1期2卷 119-123页

作者： Matteo Seita Marco Volpi Srikanth Patala Ian McCue Christopher A Schuh Maria Vittoria Diamanti jonah Erlebacher michael j.demkowicz Department of Materials Science and Engineering Massachusetts Institute of TechnologyCambridgeMAUSA Department of Chemistry Materials and Chemical Engineering‘G Natta’Politecnico di MilanoMilanItaly Department of Materials Science and Engineering North Carolina State UniversityRaleighNCUSA Department of Materials Science and Engineering Johns Hopkins UniversityBaltimoreMDUSA Materials Science and Engineering Texas A&M UniversityCollege StationTXUSA

Grain boundaries(GBs)govern many properties of polycrystalline ***,because of their structural variability,our knowledge of GB constitutive relations is still very *** present a novel method to characterise the complete crystallography of individual GBs non-destructively,with high-throughput,and using commercially available *** method combines electron diffraction,optical reflectance and numerical image analysis to determine all five crystallographic parameters of numerous GBs in samples with through-thickness *** demonstrate the technique by measuring the crystallographic character of about 1,000 individual GBs in aluminum in a single *** method enables cost-and time-effective assembly of crystallography–property databases for thousands of individual *** databases are essential for identifying GB constitutive relations and for predicting GB-related behaviours of polycrystalline solids.

关键词： character constitutive determining

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