Deformation twinning as a strengthening mechanism in microtruss cellular materials

被引：5
|
作者：
Bouwhuis, B. A. [1 ]
Chehab, B. [2 ]
Bouaziz, O. [2 ]
Embury, D. [3 ]
Zurob, H. [3 ]
Hibbard, G. D. [1 ]
机构：
[1] Univ Toronto, Dept Mat Sci & Engn, Toronto, ON M5S 3E4, Canada
[2] Voie Romaine, ArcelorMittal Res, F-57283 Maizieres Les Metz, France
[3] McMaster Univ, Dept Mat Sci & Engn, Hamilton, ON L8S 4L7, Canada
来源：
SCRIPTA MATERIALIA | 2010年 / 63卷 / 06期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Microtruss; Cold working; Twinning; Manganese steels; MICROSTRUCTURE; ALUMINUM; BEHAVIOR; STEEL; FOAMS;
D O I：
10.1016/j.scriptamat.2010.05.046
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The use of deformation twinning as a strengthening mechanism in microtruss cellular materials is described for the first time. Plastic strain was imparted to the high-Mn steel microtruss struts during stretch-bend fabrication. The extensive twinning reduced the mean free path of subsequent dislocations, increasing the flow stress and work-hardening rate within the microtruss struts. Over the range of architectures studied, the presence or absence of these deformation twins determined the overall compressive strength of the cellular material. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：609 / 612
页数：4
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