Influence of solute effects on the saturation grain size and rate sensitivity in Cu-X alloys
Influence of solute effects on the saturation grain size and rate sensitivity in Cu-X alloys
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DOI：
10.1016/j.scriptamat.2017.09.031
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发表时间：
2018-02
影响因子：
6
通讯作者：
E. Bruder;Paul Braun;H. U. Rehman;R. Marceau;A. Taylor;R. Pippan;K. Durst
中科院分区：
文献类型：
--
作者：
E. Bruder;Paul Braun;H. U. Rehman;R. Marceau;A. Taylor;R. Pippan;K. Durst
选择3种cu合金（CuSn5, CuZn5, CuZn30），研究了溶质对高压扭转后饱和晶粒尺寸的影响及其力学性能，重点研究了应变速率敏感性。相比之下，合金要么表现出相似的层错能，要么表现出相似的固溶强化，从而允许这两个参数的分离。结果表明，饱和晶粒尺寸与固溶强化有关，而与层错能无关。此外，随着晶粒尺寸的减小，应变速率敏感性降低，这归因于微观组织的稳定性。
Three Cu-alloys (CuSn5, CuZn5, CuZn30) have been selected, to study the influence of solutes on the saturation grain size after high pressure torsion as well as the resulting mechanical properties with an emphasis on strain rate sensitivity. Compared to each other, the alloys exhibit either similar stacking fault energies or similar solid solution strengthening, allowing a separation of both parameters. The results indicate that the saturation grain size correlates with the solid solution strengthening but not with the stacking fault energy. Moreover, a reduced strain rate sensitivity with reduced grain size is observed, which is attributed to the microstructural stability.