Inconsistent effects of mechanical stability of retained austenite on ductility and toughness of transformation-induced plasticity steels

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	Inconsistent effects of mechanical stability of retained austenite on ductility and toughness of transformation-induced plasticity steels
	Q. Zhou; L. H. Qian; J. Tan; J. Y. Meng; F. C. Zhang
	2013
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	578 页码:370-376
摘要	The tensile and impact properties of two low-carbon bainitic transformation-induced plasticity (TRIP) steels, one being Al-free and the other being Al-containing, have been investigated. The two steels are featured by the existence of different sizes and shapes of retained austenite showing different mechanical stabilities. Compared with the Al-containing steel, the Al-free steel shows significantly improved tensile strength, uniform strain and total elongation, but exhibits much decreased impact toughness. These results demonstrate conflicting effects of strain-induced martensitic transformation of retained austenite on tensile ductility and impact toughness of TRIP steels. It is indicated that a wide distribution of size and shape of retained austenite is favorable for sustained high strain hardening rate and increased uniform tensile strain; however, thin films of retained austenite, which is mechanically more stable, tends to enhance impact toughness. (C) 2013 Elsevier B.V. All rights reserved.
部门归属	[zhou, qian ; qian, lihe ; meng, jiangying ; zhang, fucheng] yanshan univ, state key lab metastable mat sci & technol, qinhuangdao 066004, peoples r china. [tan, jun] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. ; qian, lh (reprint author), yanshan univ, state key lab metastable mat sci & technol, qinhuangdao 066004, peoples r china. ; dlhqian@yahoo.com
关键词	Bainitic Steel Mechanical Properties Retained Austenite Ductility Toughness Trip-aided Steels Microstructure Strength Si Formability Martensite Aluminum Al
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71742
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Q. Zhou,L. H. Qian,J. Tan,et al. Inconsistent effects of mechanical stability of retained austenite on ductility and toughness of transformation-induced plasticity steels[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2013,578:370-376.
APA	Q. Zhou,L. H. Qian,J. Tan,J. Y. Meng,&F. C. Zhang.(2013).Inconsistent effects of mechanical stability of retained austenite on ductility and toughness of transformation-induced plasticity steels.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,578,370-376.
MLA	Q. Zhou,et al."Inconsistent effects of mechanical stability of retained austenite on ductility and toughness of transformation-induced plasticity steels".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 578(2013):370-376.