Discontinuous Dynamic Recrystallization of Inconel 718 Superalloy During the Superplastic Deformation

IMR OpenIR

	Discontinuous Dynamic Recrystallization of Inconel 718 Superalloy During the Superplastic Deformation
	Huang, Linjie; Qi, Feng; Hua, Peitao; Yu, Lianxu; Liu, Feng; Sun, Wenru; Hu, Zhuangqi; wrsun@imr.ac.cn
	2015
发表期刊	METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
ISSN	1073-5623
卷号	46A 期号:9 页码:4276-4285
摘要	The superplastic behavior of Inconel 718 superalloy with particular emphasis on the microstructural evolution has been systematically investigated through tensile tests at the strain rate of 10(-3) s(-1) and the temperatures ranging from 1223 K to 1253 K (950 A degrees C to 980 A degrees C). Its elongations exceeded 300 pct under all of the experimental conditions and peaked a maximum value of 520 pct at 1223 K (950 A degrees C). Moreover, the stress reached the top value at the strain of 0.3, and then declined until the tensile failure. In addition, we have found that the grain size reduced after deformation while the delta phase precipitation increased. Microstructural evolution during the superplasticity was characterized via transmission electron microscope, and the randomly distributed dislocation, dislocation network, dislocation arrays, low-angled subgrains, and high-angled recrystallized new grains were observed in sequence. These new grains were found to nucleate at the triple junction, twin boundary, and near the delta phase. Based on these results, it is deemed that the discontinuous dynamic recrystallization occurred as the main mechanism for the superplastic deformation of Inconel 718 alloy.
部门归属	[huang, linjie ; qi, feng ; hua, peitao ; yu, lianxu ; liu, feng ; sun, wenru ; hu, zhuangqi] chinese acad sci, inst met res, superalloys div, shenyang 110016, peoples r china
收录类别	sci
语种	英语
WOS记录号	WOS:000358939600052
引用统计	被引频次：32[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/321006/74725
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,Qi, Feng,Hua, Peitao,et al. Discontinuous Dynamic Recrystallization of Inconel 718 Superalloy During the Superplastic Deformation[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2015,46A(9):4276-4285.
APA	Huang, Linjie.,Qi, Feng.,Hua, Peitao.,Yu, Lianxu.,Liu, Feng.,...&wrsun@imr.ac.cn.(2015).Discontinuous Dynamic Recrystallization of Inconel 718 Superalloy During the Superplastic Deformation.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,46A(9),4276-4285.
MLA	Huang, Linjie,et al."Discontinuous Dynamic Recrystallization of Inconel 718 Superalloy During the Superplastic Deformation".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 46A.9(2015):4276-4285.