Influence of high-temperature air pre-exposure on mechanical strength of a directionally solidified cobalt-base superalloy

IMR OpenIR

	Influence of high-temperature air pre-exposure on mechanical strength of a directionally solidified cobalt-base superalloy
	W. H. Jiang; X. F. Sun; H. R. Guan; Z. Q. Hu
	2001
发表期刊	Journal of Materials Science
ISSN	0022-2461
卷号	36 期号:4 页码:859-863
摘要	The present work investigated the influence of air pre-exposure at 850 degreesC for 1000 h on the mechanical properties and microstructures of the directionally solidified cobalt-base alloy DZ40M. The results show that the air pre-exposure did not embrittle the alloy, but resulted in a marked strengthening. Microstructural observations and energy dispersive X-ray spectroscopy (EDS) indicates that the air pre-exposure caused a substantial external and internal oxidation, which is assumed to protect the alloy from being oxidized further and make a significant contribution to alloy strengthening, respectively. The immunity of the alloy to air embrittlement is attributed to elimination of transverse grain boundaries by directional solidification. (C) 2001 Kluwer Academic Publishers.
部门归属	chinese acad sci, inst met res, shenyang 110015, peoples r china. shenyang univ technol, dept met mat engn, shenyang 110023, peoples r china.;jiang, wh (reprint author), chinese acad sci, inst met res, 72 wenhua rd, shenyang 110015, peoples r china
关键词	Precipitation
URL	查看原文
WOS记录号	WOS:000166860400011
引用统计	被引频次：3[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/321006/36681
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. H. Jiang,X. F. Sun,H. R. Guan,et al. Influence of high-temperature air pre-exposure on mechanical strength of a directionally solidified cobalt-base superalloy[J]. Journal of Materials Science,2001,36(4):859-863.
APA	W. H. Jiang,X. F. Sun,H. R. Guan,&Z. Q. Hu.(2001).Influence of high-temperature air pre-exposure on mechanical strength of a directionally solidified cobalt-base superalloy.Journal of Materials Science,36(4),859-863.
MLA	W. H. Jiang,et al."Influence of high-temperature air pre-exposure on mechanical strength of a directionally solidified cobalt-base superalloy".Journal of Materials Science 36.4(2001):859-863.