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Investigation of Work Hardening Behavior of Inconel X-750 Alloy
Hua, Pei-Tao; Zhang, Wei-Hong; Huang, Lin-Jie; Sun, Wen-Ru; Sun, WR (reprint author), Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Liaoning, Peoples R China.
2017-09-01
Source PublicationCHINESE ACAD SCIENCES, INST METAL RESEARCH
ISSN1006-7191
Volume30Issue:9Pages:869-877
AbstractThe constant strain rate uniaxial compression tests were conducted in this paper for studying the work hardening behavior and revealing the underlying microstructure evolution involved in the plastic response of the nickel-based Inconel X-750 alloy. The work hardening rate versus true strain plots of Inconel X-750 alloy resembled that of low-stacking-fault energy (SFE) alloys with distinct four stages. The dislocations were found in the planar arrangements at a strain of 0.1 located at the onset of stage II, and the dislocation density was increased and the planar arrangement configuration was partially destroyed at a strain of 0.36 located in stage III. It was unexpected that deformation twins were observed at a strain of 0.69 located in stage IV although the alloy has been classified into materials with a higher SFE value. The result is different with a similar study, in which the deformation twins were absent in Ni-Cr-based alloy Inconel 625 even when the strain was as high as 0.65. It was deemed that the low level of solution strengthening favored the deformation of matrix and the activation of slip system for twining in Inconel X-750 alloy. Unlike the low-SFE alloys that the twins were always formed at the end of stage I, the higher SFE delayed the twin formation to stage IV for Inconel X-750 alloy. The well-developed planar dislocation configuration gave rise to the stage II with a slightly decreasing rate, the collapse of planar dislocation arrangements caused the occurrence of stage III with an accelerated decreasing rate, and the twin formation led to the stage IV with a nearly constant work hardening rate.; The constant strain rate uniaxial compression tests were conducted in this paper for studying the work hardening behavior and revealing the underlying microstructure evolution involved in the plastic response of the nickel-based Inconel X-750 alloy. The work hardening rate versus true strain plots of Inconel X-750 alloy resembled that of low-stacking-fault energy (SFE) alloys with distinct four stages. The dislocations were found in the planar arrangements at a strain of 0.1 located at the onset of stage II, and the dislocation density was increased and the planar arrangement configuration was partially destroyed at a strain of 0.36 located in stage III. It was unexpected that deformation twins were observed at a strain of 0.69 located in stage IV although the alloy has been classified into materials with a higher SFE value. The result is different with a similar study, in which the deformation twins were absent in Ni-Cr-based alloy Inconel 625 even when the strain was as high as 0.65. It was deemed that the low level of solution strengthening favored the deformation of matrix and the activation of slip system for twining in Inconel X-750 alloy. Unlike the low-SFE alloys that the twins were always formed at the end of stage I, the higher SFE delayed the twin formation to stage IV for Inconel X-750 alloy. The well-developed planar dislocation configuration gave rise to the stage II with a slightly decreasing rate, the collapse of planar dislocation arrangements caused the occurrence of stage III with an accelerated decreasing rate, and the twin formation led to the stage IV with a nearly constant work hardening rate.
description.department[hua, pei-tao ; zhang, wei-hong ; huang, lin-jie ; sun, wen-ru] chinese acad sci, inst met res, superalloys div, shenyang 110016, liaoning, peoples r china ; [hua, pei-tao ; huang, lin-jie] univ chinese acad sci, beijing 100049, peoples r china
KeywordInconel X-750 Alloy Work Hardening Behavior Planar Dislocation Arrangement Deformation Twins
Subject AreaMetallurgy & Metallurgical Engineering
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79122
Collection中国科学院金属研究所
Corresponding AuthorSun, WR (reprint author), Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Hua, Pei-Tao,Zhang, Wei-Hong,Huang, Lin-Jie,et al. Investigation of Work Hardening Behavior of Inconel X-750 Alloy[J]. CHINESE ACAD SCIENCES, INST METAL RESEARCH,2017,30(9):869-877.
APA Hua, Pei-Tao,Zhang, Wei-Hong,Huang, Lin-Jie,Sun, Wen-Ru,&Sun, WR .(2017).Investigation of Work Hardening Behavior of Inconel X-750 Alloy.CHINESE ACAD SCIENCES, INST METAL RESEARCH,30(9),869-877.
MLA Hua, Pei-Tao,et al."Investigation of Work Hardening Behavior of Inconel X-750 Alloy".CHINESE ACAD SCIENCES, INST METAL RESEARCH 30.9(2017):869-877.
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