Microstructure development and high tensile properties of He/H2 milled oxide dispersion strengthened copper
Microstructure development and high tensile properties of He/H2 milled oxide dispersion strengthened copper
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DOI：
10.1016/j.jallcom.2018.12.298
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发表时间：
2019-04-30
影响因子：
6.2
通讯作者：
Muroga, T.
中科院分区：
文献类型：
--
作者：
Aghamiri, S. M. S.;Oono, N.;Muroga, T.
本研究描述了新开发的He/H-2球磨氧化物弥散强化铜的组织发展对高拉伸性能的影响。电子背散射分析表明，球磨后球体表面形成了微米级(1.2微米)的(110)面强烈织构。不均匀的晶粒度、纳米级的柱状/矩形形变孪晶、高的位错密度和细小的氧化物颗粒分布等显微组织特征相结合，导致了极高的极限拉伸强度(688 Mpa)-塑性(8.6%)。(C)2018爱思唯尔B.V.保留所有权利。
This study describes the effect of microstructural development on high tensile properties of a newly developed He/H-2 milled oxide dispersion strengthened copper in a large centimeter sized spherical morphology. Electron back scattered diffraction showed development of a strong texture of (110) plane in micron sized (1.2 mu m) grains on the surface of milled spheres. A combination of microstructural features of inhomogeneous grain size, nanoscale lenticular/rectangular deformation twins, high dislocation density and fine oxide particles distribution induced a very high ultimate tensile strength (688 MPa)-ductility (8.6% elongation). (C) 2018 Elsevier B.V. All rights reserved.