Effect of boron on the microstructure, mechanical properties and hydrogen performance in a modified A286

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	Effect of boron on the microstructure, mechanical properties and hydrogen performance in a modified A286
	M. J. Zhao; Z. F. Guo; H. Liang; L. J. Rong
	2010
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	527 期号:21-22 页码:5844-5851
摘要	The microstructure, mechanical properties and hydrogen performance in a modified A286, with and without trace boron, were investigated in the present study. It was found that quite a few cellular eta phases had precipitated at grain boundaries (GBs) in the modified A286 free of boron. However, a few carbides were the major precipitation phase in the modified A286 with boron and the cellular eta phase was inhibited from precipitating at GBs. Thermal hydrogen charging experiment and tensile tests indicated that trace boron could not influence the strength of the modified A286 whether hydrogen charged or not, but significantly improve its ductility and alleviate its hydrogen damage because the precipitates at CBs had been changed from the cellular eta phases to carbides. After aging treatment, the modified A286 with boron exhibited transgranular fracture whether hydrogen charged or not, however, intergranular fracture was easily to be formed in the modified A286 free of boron because the cellular eta phases had precipitated at GBs. (C) 2010 Elsevier B.V. All rights reserved.
部门归属	[zhao, m. j.; guo, z. f.; rong, l. j.] chinese acad sci, inst met res, shenyang 110016, peoples r china. [liang, h.] china acad engn phys, inst struct mech, mianyang 621900, peoples r china.;zhao, mj (reprint author), chinese acad sci, inst met res, wenhua rd 72, shenyang 110016, peoples r china;mjzhao@imr.ac.cn
关键词	Boron Eta Phase A286 Ductility Hydrogen Performance Grain-boundary Segregation Austenitic Stainless-steel Low-cycle Fatigue Nb-a286 Alloy Precipitation Superalloy Fracture Behavior
URL	查看原文
WOS记录号	WOS:000281175300069
引用统计	被引频次：53[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/321006/31748
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	M. J. Zhao,Z. F. Guo,H. Liang,et al. Effect of boron on the microstructure, mechanical properties and hydrogen performance in a modified A286[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2010,527(21-22):5844-5851.
APA	M. J. Zhao,Z. F. Guo,H. Liang,&L. J. Rong.(2010).Effect of boron on the microstructure, mechanical properties and hydrogen performance in a modified A286.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,527(21-22),5844-5851.
MLA	M. J. Zhao,et al."Effect of boron on the microstructure, mechanical properties and hydrogen performance in a modified A286".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 527.21-22(2010):5844-5851.