Investigation of continuous deformation behavior around initial yield point of single crystal copper by using micro scale torsion test
Investigation of continuous deformation behavior around initial yield point of single crystal copper by using micro scale torsion test
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DOI：
10.1016/j.scriptamat.2015.08.022
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发表时间：
2016-01
影响因子：
6
通讯作者：
K. Koiwa;N. Shishido;Chuantong Chen;M. Omiya;S. Kamiya;H. Sato;M. Nishida;Takashi Suzuki;Tomoji Nakamura;Toshiaki Suzuki;T. Nokuo
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文献类型：
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作者：
K. Koiwa;N. Shishido;Chuantong Chen;M. Omiya;S. Kamiya;H. Sato;M. Nishida;Takashi Suzuki;Tomoji Nakamura;Toshiaki Suzuki;T. Nokuo
开发了微尺度扭转测试方法来研究铜单晶结构初始屈服点附近的连续变形行为。由于应力梯度和平行于试样表面的扭转应力方向抑制了位错爆裂现象，因此通过扭转试验获得了连续的载荷-位移曲线。如果将新的本构定律应用于模拟，则可以利用实验和模拟的载荷-位移曲线进行参数拟合来评估铜的晶体塑性参数。
Micro scale torsion test method was developed to investigate continuous deformation behavior around initial yield point of copper single crystal structure. Continuous load–displacement curve was obtained by torsion test because dislocation burst phenomenon was suppressed by stress gradient and torsion stress direction which parallel to the specimen surface. In case that new constitutive law was applied to the simulation, crystal plasticity parameter of copper could be evaluated by parameter fitting which using load–displacement curve of experiment and simulation.