Necking characteristics and dynamic recrystallization during the superplasticity of IN718 superalloy

IMR OpenIR

	Necking characteristics and dynamic recrystallization during the superplasticity of IN718 superalloy
	Huang, Linjie; Hua, Peitao; Sun, Wenru; Liu, Fang; Qi, Feng; wrsun@imr.ac.cn
	2015
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	647 页码:277-286
摘要	The necking extent of the superplasticity of IN718 alloy is difficult to quantificationally evaluate because of its point fracture (with extreme small final fracture area) after failure. In this investigation, we have defined a necking angle to donate the necking extent after failure and systematically investigated the superplastic behavior of the alloy at temperatures between 935 degrees C and 1010 degrees C in strain rate range 5 x 10(-4)-10(-2) s(-1). In the temperature range 935-980 degrees C, the elongation was found to decrease with the increasing strain rate while the necking angle (extent) increased because softening source provided by the dynamic recrystallization increased with the increasing strain rate at necking zone. In contrast, at 1010 degrees C, due to a good balance between the grain refinement by recrystallization and the dynamic grain growth, a peak elongation of 225% was obtained at 10(-3) s(-1). Our study has emphasized the vital role of the dynamic recrystallization during the superplasticity of IN718 alloy. (C) 2015 Elsevier B.V. All rights reserved.
部门归属	[huang, linjie ; hua, peitao ; sun, wenru ; liu, fang ; qi, feng] chinese acad sci, inst met res, shenyang 110016, peoples r china
关键词	In718 Superplastic Deformation Necking Dynamic Recrystallization Grain Size
收录类别	sci
语种	英语
WOS记录号	WOS:000364250100034
引用统计	被引频次：19[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/321006/75017
专题	中国科学院金属研究所
通讯作者	wrsun@imr.ac.cn
推荐引用方式 GB/T 7714	Huang, Linjie,Hua, Peitao,Sun, Wenru,et al. Necking characteristics and dynamic recrystallization during the superplasticity of IN718 superalloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2015,647:277-286.
APA	Huang, Linjie,Hua, Peitao,Sun, Wenru,Liu, Fang,Qi, Feng,&wrsun@imr.ac.cn.(2015).Necking characteristics and dynamic recrystallization during the superplasticity of IN718 superalloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,647,277-286.
MLA	Huang, Linjie,et al."Necking characteristics and dynamic recrystallization during the superplasticity of IN718 superalloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 647(2015):277-286.