Portevin-Le Chatelier Effect in Nimonic 263 Superalloy

IMR OpenIR

	Portevin-Le Chatelier Effect in Nimonic 263 Superalloy
	Han, Guo-Ming; Tian, Cheng-Gang; Cui, Chuan-Yong; Hu, Zhuang-Qi; Sun, Xiao-Feng; chycui@imr.ac.cn
	2015
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
卷号	28 期号:5 页码:542-549
摘要	The Portevin-Le Chatelier (PLC) effect in the Nimonic 263 superalloy was investigated by tensile test at a wide temperature ranges from 293 to 1033 K and strain rates between 0.1 and 6.25 x 10(-6) s(-1). Simple binary alloys Ni-0.4C, Ni-24Cr and Ni-5(8)Mo were also tested in order to identify which elements were responsible for the PLC effect in the Nimonic 263 alloy. The results demonstrated that for Nimonic 263 alloy, PLC effect occurred at certain temperatures and low strain rates. Normal PLC effect exhibiting type-A and -(A + B) serrations was attributed to the enhanced solute diffusion with increasing temperature, while inverse PLC effect with type-C serration was caused by unlocking process. The activation energy for the normal PLC effect was calculated to be 68 kJ/mol, and diffusion of substitutional solutes such as Cr and Mo was identified to be responsible for the PLC effect. In comparison with the PLC effect in simple binary alloys, solute atmospheres formed by different kinds of atoms in Nimonic 263 alloy work more effectively, increasing locking strength and corresponding mean stress drop magnitude.
部门归属	[han, guo-ming ; tian, cheng-gang ; cui, chuan-yong ; hu, zhuang-qi ; sun, xiao-feng] chinese acad sci, inst met res, shenyang 110016, peoples r china
关键词	Plc Effect Dynamic Strain Aging Nickel-base Alloys Solute Atom
资助者	Hundreds of Talents Project; National Basic Research Program of China [2010CB631206, 51171179, 51128101, 51271174]
收录类别	sci
语种	英语
WOS记录号	WOS:000356403600002
引用统计	被引频次：27[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/321006/75062
专题	中国科学院金属研究所
通讯作者	chycui@imr.ac.cn
推荐引用方式 GB/T 7714	Han, Guo-Ming,Tian, Cheng-Gang,Cui, Chuan-Yong,et al. Portevin-Le Chatelier Effect in Nimonic 263 Superalloy[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2015,28(5):542-549.
APA	Han, Guo-Ming,Tian, Cheng-Gang,Cui, Chuan-Yong,Hu, Zhuang-Qi,Sun, Xiao-Feng,&chycui@imr.ac.cn.(2015).Portevin-Le Chatelier Effect in Nimonic 263 Superalloy.ACTA METALLURGICA SINICA-ENGLISH LETTERS,28(5),542-549.
MLA	Han, Guo-Ming,et al."Portevin-Le Chatelier Effect in Nimonic 263 Superalloy".ACTA METALLURGICA SINICA-ENGLISH LETTERS 28.5(2015):542-549.