The evolution of cold-rolled deformation microstructure of {001} ⟨110⟩ grains in Ta-7.5 wt%W alloy foils

被引：15

作者：

Chen, C. ^{[1
]}

Wang, M. P. ^{[1
]}

Wang, S. ^{[1
]}

Jia, Y. L. ^{[1
]}

Lei, R. S. ^{[1
]}

Xia, F. Z. ^{[1
]}

Zuo, B. ^{[1
]}

Yu, H. C. ^{[1
]}

机构：

[1] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2012年 / 513卷

关键词：

Cold-rolled; Electron backscattering diffraction; Microbands; Dislocation microstructures; INTERSTITIAL-FREE STEEL; SHEAR-BAND FORMATION; IF STEEL; TA-W; RECRYSTALLIZATION TEXTURES; MECHANICAL-PROPERTIES; FLOW-STRESS; HIGH-STRAIN; TANTALUM; TEMPERATURE;

D O I：

10.1016/j.jallcom.2011.10.020

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The deformation structure of {001} < 110 > grains in cold-rolled Ta-7.5 wt%W alloy foils has been investigated by transmission electron microscopy (TEM) and electron backscattering diffraction (EBSD). The results show that there are two kinds of {001} < 110 > grains formed during the cold-rolled deformation process. Type A grains are surrounded by alpha-fiber, while type B grains are surrounded by gamma-fiber. Dislocation analysis reveals a continuous evolution of dislocation substructures from dislocation arrays, to high dense dislocation walls, and to microbands in type A grains, while in type B grains from dislocation mesh to dislocation cells as a function of plastic strain. By both the analysis of EBSD and TEM, a new deformation mode in type A grains is developed. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：208 / 212

页数：5

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