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Effect of initial state on hot deformation and dynamic recrystallization of Ni-Fe based alloy GH984G for steam boiler applications
Wu, Yunsheng1,2; Liu, Zhuang1; Qin, Xuezhi1; Wang, Changshuai1; Zhou, Lanzhang1
Corresponding AuthorZhou, Lanzhang(lzz@imr.ac.cn)
2019-07-30
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume795Pages:370-384
AbstractThe effect of initial alloy state on hot deformation and dynamic recrystallization (DRX) of GH984G alloy, used to manufacture large scale forgings for 700 degrees C advanced ultra-supercritical (A-USC) coal-fired power plants, was studied by isothermal compression test. The experimental results show that the apparent activation energy of hot deformation for the as-cast alloy is larger than that of the hot-rolled alloy. The reasonable ranges of processing parameters for the as-cast and hot-rolled alloys are 1100-1200 degrees C/0.01 -0.5 s(-1) and 1100-1200 degrees C/1.0-10 s(-1), respectively, based on the processing maps. The flow instability domain of the as-cast alloy is larger than that of the hot-rolled alloy. The different hot deformation behaviors of the as-cast and hot-rolled alloys result from the various initial grain sizes and DRX mechanisms. The main DRX nucleation mode of the as-cast alloy with large grains is continuous dynamic recrystallization (CDRX). However, for the hot-rolled alloy with fine grains, the discontinuous dynamic recrystallization (DDRX) is dominant. (C) 2019 Elsevier B.V. All rights reserved.
KeywordHot deformation Dynamic recrystallization Initial alloy state Ni-Fe based alloy A-USC
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China
DOI10.1016/j.jallcom.2019.05.022
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2017YFB0305204] ; National Natural Science Foundation of China[51871213]
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000468903200042
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:20[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/133281
Collection中国科学院金属研究所
Corresponding AuthorZhou, Lanzhang
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China
Recommended Citation
GB/T 7714
Wu, Yunsheng,Liu, Zhuang,Qin, Xuezhi,et al. Effect of initial state on hot deformation and dynamic recrystallization of Ni-Fe based alloy GH984G for steam boiler applications[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,795:370-384.
APA Wu, Yunsheng,Liu, Zhuang,Qin, Xuezhi,Wang, Changshuai,&Zhou, Lanzhang.(2019).Effect of initial state on hot deformation and dynamic recrystallization of Ni-Fe based alloy GH984G for steam boiler applications.JOURNAL OF ALLOYS AND COMPOUNDS,795,370-384.
MLA Wu, Yunsheng,et al."Effect of initial state on hot deformation and dynamic recrystallization of Ni-Fe based alloy GH984G for steam boiler applications".JOURNAL OF ALLOYS AND COMPOUNDS 795(2019):370-384.
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