Effect of the Small Reaustenized Grains on the Mechanical Properties of a HSLA Steel

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	Effect of the Small Reaustenized Grains on the Mechanical Properties of a HSLA Steel
	L. Y. Zhao; Y. Wei; Y. Y. Shan; K. Yang
	2011
发表期刊	Journal of Iron and Steel Research International
ISSN	1006-706X
卷号	18 页码:312-315
摘要	Grain refinement improves not only strength but also toughness. Small reaustenized grains were discovered to form along the grain boundaries and lath boundaries in an as rolled high-strength low-alloy (HSLA) steel when heated to double phase region. The number and size of the small reaustenized grains were revealed to depend mainly on temperature in the range of 700 to 760 degrees C. These small reaustenized grains were deduced to form by consuming precipitates. The mechanical property tests showed that they resulted in slight changes to tensile properties. However, the sample heated at 740 degrees C produced a peak Charpy V-notch (CVN) impact energy of 248J when tested at -30 degrees C. Fractography showed that the facture surface of the 740 degrees C heated impact sample exhibited the smallest brittle zone away from the notch root and a large dimple zone lay ahead of the notch tip, which demonstrated the highest toughness.
部门归属	[zhao lian-yu; wei yan; shan yi-yin; yang ke] chinese acad sci, inst met res, shenyang 110016, liaoning, peoples r china. [zhao lian-yu] chinese acad sci, grad sch, beijing 100049, peoples r china.;zhao, ly (reprint author), chinese acad sci, inst met res, shenyang 110016, liaoning, peoples r china
关键词	High-strength Low-alloy Steel Reaustenization Grain Refinement Tensile Property
URL	查看原文
WOS记录号	WOS:000292229000052
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30950
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. Y. Zhao,Y. Wei,Y. Y. Shan,et al. Effect of the Small Reaustenized Grains on the Mechanical Properties of a HSLA Steel[J]. Journal of Iron and Steel Research International,2011,18:312-315.
APA	L. Y. Zhao,Y. Wei,Y. Y. Shan,&K. Yang.(2011).Effect of the Small Reaustenized Grains on the Mechanical Properties of a HSLA Steel.Journal of Iron and Steel Research International,18,312-315.
MLA	L. Y. Zhao,et al."Effect of the Small Reaustenized Grains on the Mechanical Properties of a HSLA Steel".Journal of Iron and Steel Research International 18(2011):312-315.