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Microstructure characteristics of segregation zone in 17-4PH stainless steel piston rod
Tian, Jia-long; Wang, Wei; Yan, Wei; Jiang, Zhou-hua; Shan, Yi-yin; Yang, Ke; Yan, W (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.; Yan, W (reprint author), Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110011, Liaoning, Peoples R China.
2017-07-01
Source PublicationJOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
ISSN1006-706X
Volume24Issue:7Pages:718-723
AbstractThe segregation of Cu and Ni in a 17-4PH stainless steel piston rod has been confirmed to he responsible for the cracking after heat treatment. Further investigation showed that the segregation zone was composed of three layers, namely the fine grain martensitic layer, the coarse grain martensitic layer and the coarse grain austenitic layer from the matrix to the crack surface. Three button ingots with the same chemical compositions as those three layers have been prepared to evaluate the grain size distribution, microstructure and mechanical properties. The effects of Cu and Ni segregation on the microstructures of those three layers have been explored by thermodynamic calculation. Based on the microstructure and mechanical properties results, an intensive understanding of the cracking in the segregation zone was therefore reached.; The segregation of Cu and Ni in a 17-4PH stainless steel piston rod has been confirmed to he responsible for the cracking after heat treatment. Further investigation showed that the segregation zone was composed of three layers, namely the fine grain martensitic layer, the coarse grain martensitic layer and the coarse grain austenitic layer from the matrix to the crack surface. Three button ingots with the same chemical compositions as those three layers have been prepared to evaluate the grain size distribution, microstructure and mechanical properties. The effects of Cu and Ni segregation on the microstructures of those three layers have been explored by thermodynamic calculation. Based on the microstructure and mechanical properties results, an intensive understanding of the cracking in the segregation zone was therefore reached.
description.department[tian, jia-long ; jiang, zhou-hua] northeastern univ, sch mat & met, shenyang 110819, liaoning, peoples r china ; [tian, jia-long ; wang, wei ; yan, wei ; shan, yi-yin ; yang, ke] chinese acad sci, inst met res, shenyang 110016, liaoning, peoples r china ; [wang, wei ; yan, wei ; shan, yi-yin] chinese acad sci, inst met res, key lab nucl mat & safety assessment, shenyang 110011, liaoning, peoples r china
Keyword17-4ph Stainless Steel Piston Rod Segregation Thermodynamic Calculation Crack
Subject AreaMetallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China [51201160]; Youth Innovation Promotion Association of Chinese Academy of Sciences [2017233]; Science and Technology Innovation Foundation from Institute of Metal Research, Chinese Academy of Sciences [2015-ZD04]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78058
Collection中国科学院金属研究所
Corresponding AuthorYan, W (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.; Yan, W (reprint author), Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110011, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Tian, Jia-long,Wang, Wei,Yan, Wei,et al. Microstructure characteristics of segregation zone in 17-4PH stainless steel piston rod[J]. JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,2017,24(7):718-723.
APA Tian, Jia-long.,Wang, Wei.,Yan, Wei.,Jiang, Zhou-hua.,Shan, Yi-yin.,...&Yan, W .(2017).Microstructure characteristics of segregation zone in 17-4PH stainless steel piston rod.JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,24(7),718-723.
MLA Tian, Jia-long,et al."Microstructure characteristics of segregation zone in 17-4PH stainless steel piston rod".JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL 24.7(2017):718-723.
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