Nanotwinned microstructures from low stacking fault energy brass by high-rate severe plastic deformation

被引：42

作者：

Cai, J. ^{[1
]}

Shekhar, S. ^{[1
]}

Wang, J. ^{[1
]}

Shankar, M. Ravi ^{[1
]}

机构：

[1] Univ Pittsburgh, Dept Ind Engn, Pittsburgh, PA 15261 USA

来源：

SCRIPTA MATERIALIA | 2009年 / 60卷 / 08期

基金：

美国国家科学基金会;

关键词：

Severe plastic deformation; Twinning; Nanostructure; ULTRAHIGH-STRENGTH; HIGH-DENSITY; COPPER; TEMPERATURE; TWINS; TITANIUM; METALS; FIELD; SPD;

D O I：

10.1016/j.scriptamat.2008.12.024

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

High-rate severe plastic deformation by machining is explored in a prototypical low stacking fault energy material, brass, as a route for generating a high density of nanometer-scale twins amidst dislocation structures. This nanotwinned system shows a greatly improved strength compared to the bulk microcrystalline state. The twin densities are found to be retained even after modest thermal agitation, which is also seen to engender a small "hardening by annealing" effect in the nanotwinned material. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：599 / 602

页数：4

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