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SERRATED FLOW IN A FeNi-BASED AUSTENITIC ALLOY
Zhao Shuai; Li Xiuyan; Rong Lijian
Corresponding AuthorRong Lijian(ljrong@imr.ac.cn)
2011-08-11
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume47Issue:8Pages:1017-1021
AbstractTensile 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.
Keywordserrated flow FeNi-based alloy twin boundary dislocation slip deformation
Funding OrganizationNational Natural Science Foundation of China
DOI10.3724/SP.J.1037.2011.00155
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[50601028]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000295420400008
PublisherSCIENCE PRESS
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/106623
Collection中国科学院金属研究所
Corresponding AuthorRong Lijian
AffiliationChinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
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.
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