Crystallographic study of plasticity and grain boundary separation in FeCo alloy using small single- and bi-crystalline specimens
Crystallographic study of plasticity and grain boundary separation in FeCo alloy using small single- and bi-crystalline specimens
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DOI：
10.1016/j.scriptamat.2017.08.012
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发表时间：
2018-01-01
影响因子：
6
通讯作者：
Takashima, Kazuki
中科院分区：
文献类型：
--
作者：
Kishi, Daichi;Mayama, Tsuyoshi;Takashima, Kazuki
为了研究 FeCo 金属间合金的塑性和晶间断裂之间的关系，对小型单晶和双晶样品进行了微拉伸测试和晶体塑性有限元分析。与双晶和多晶样品相比，单晶样品表现出高强度和大的失效应变。 {1(1) over bar 0} <111> 滑移的临界解析剪切应力类似于 100 MPa。对于双晶样品，晶间断裂是通过由于变形和未变形晶体之间的应变差异而产生的应力集中来确定的。 (C) 2017 Acta Materialia Inc. 由 Elsevier Ltd 出版。保留所有权利。
To study the relationship between the plasticity and intergranular fracture of FeCo intermetallic alloys, small, single- and bi-crystalline specimens were subjected to micro-tensile testing and crystal plasticity finite element analyses. The single-crystalline specimens exhibited a high strength and a large strain-to-failure compared with the bi-crystalline and polycrystalline specimens. The critical resolved shear stress for the {1(1) over bar 0} < 111 > slip was similar to 100 MPa. For the bi-crystalline specimen, the intergranular fracture was determined by stress concentration due to the difference in the strain between the deformed and undeformed crystals. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.