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Effect of initial state on hot deformation and dynamic recrystallization of Ni-Fe based alloy GH984G for steam boiler applications

文献类型：期刊论文

作者Wu, Yunsheng1,2; Liu, Zhuang2; Qin, Xuezhi2; Wang, Changshuai2; Zhou, Lanzhang2
刊名JOURNAL OF ALLOYS AND COMPOUNDS
出版日期2019-07-30
卷号795页码:370-384
关键词Hot deformation Dynamic recrystallization Initial alloy state Ni-Fe based alloy A-USC
ISSN号0925-8388
DOI10.1016/j.jallcom.2019.05.022
通讯作者Zhou, Lanzhang(lzz@imr.ac.cn)
英文摘要The 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.
资助项目National Key Research and Development Program of China[2017YFB0305204] ; National Natural Science Foundation of China[51871213]
WOS研究方向Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:000468903200042
出版者ELSEVIER SCIENCE SA
资助机构National Key Research and Development Program of China ; National Natural Science Foundation of China
源URL[http://ir.imr.ac.cn/handle/321006/133280]  
专题金属研究所_中国科学院金属研究所
通讯作者Zhou, Lanzhang
作者单位1.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式
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.

入库方式： OAI收割

来源：金属研究所

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