SERRATED FLOW IN A FeNi-BASED AUSTENITIC ALLOY

doi:10.3724/SP.J.1037.2011.00155

IMR OpenIR

	SERRATED FLOW IN A FeNi-BASED AUSTENITIC ALLOY
	Zhao Shuai; Li Xiuyan; Rong Lijian
通讯作者	Rong Lijian(ljrong@imr.ac.cn)
	2011-08-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	47 期号:8 页码:1017-1021
摘要	Tensile tests on a FeNi-base austenitic alloy, with different amount of twin boundaries, were conducted at different temperatures and three strain rates, respectively. The results show that serrated flow occurs at temperatures from 300 to 700 degrees C. This serrated flow exhibits bulge-like serrations at temperatures from 300 to 600 degrees C and stress-loss serrations at 700 degrees C, which manifests the nature of thermal activation, i.e. higher temperatures boost serrations and higher strain rates depress them. Investigations on samples deformed at room temperature (no serrated flow) and 400 degrees C (prominent serrated flow) indicate that twin boundaries are strong enough to block slip deformation at 400 degrees C. As a result, stress accumulates on twin boundaries and bulge-like serrations appear on the tensile curves. Effect of twin boundary amount on the morphologies of serrations testified this mechanism.
关键词	serrated flow FeNi-based alloy twin boundary dislocation slip deformation
资助者	National Natural Science Foundation of China
DOI	10.3724/SP.J.1037.2011.00155
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[50601028]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000295420400008
出版者	SCIENCE PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/106623
专题	中国科学院金属研究所
通讯作者	Rong Lijian
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhao Shuai,Li Xiuyan,Rong Lijian. SERRATED FLOW IN A FeNi-BASED AUSTENITIC ALLOY[J]. ACTA METALLURGICA SINICA,2011,47(8):1017-1021.
APA	Zhao Shuai,Li Xiuyan,&Rong Lijian.(2011).SERRATED FLOW IN A FeNi-BASED AUSTENITIC ALLOY.ACTA METALLURGICA SINICA,47(8),1017-1021.
MLA	Zhao Shuai,et al."SERRATED FLOW IN A FeNi-BASED AUSTENITIC ALLOY".ACTA METALLURGICA SINICA 47.8(2011):1017-1021.