Deformation-induced ω phase in nanocrystalline Mo

被引：36

作者：

Cheng, G. M. ^{[1
]}

Yuan, H. ^{[1
]}

Jian, W. W. ^{[1
]}

Xu, W. Z. ^{[1
]}

Millett, P. C. ^{[2
]}

Zhu, Y. T. ^{[1
]}

机构：

[1] N Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA

[2] Idaho Natl Lab, Idaho Falls, ID 83415 USA

来源：

SCRIPTA MATERIALIA | 2013年 / 68卷 / 02期

关键词：

Phase transformation; Nanocrystalline; Body-centered cubic; Deformation mechanism; High-pressure torsion; HIGH-PRESSURE TORSION; TENSILE DUCTILITY; TRANSFORMATION; BETA; STRENGTH;

D O I：

10.1016/j.scriptamat.2012.09.033

中图分类号：

TB3 [工程材料学];

学科分类号：

082905 [生物质能源与材料];

摘要：

A deformation-induced hexagonal omega phase was first observed in pure nanocrystalline body-centered cubic (bcc) Mo using high-resolution transmission electron microscopy. As the grains were refined into nanometer sizes by deformation using high-pressure torsion under a pressure of similar to 4 GPa at room temperature, the omega phase formed at the grain boundaries of bcc Mo with a crystallographic relationship close to the {1 1 2}< 1 1 1 > twin orientation. Its formation was mainly attributed to the shear deformation on {1 1 2} planes in bcc Mo. Published by Elsevier Ltd. on behalf of Acta Materialia Inc.

引用

页码：130 / 133

页数：4

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