Segregation sequence of phosphorus and its effect on impact toughness of GH984G alloy during thermal exposure
文献类型:期刊论文
作者 | Wu, Yunsheng1,2; Wang, Changshuai1,2; Qin, Xuezhi1,2; Hou, Jieshan1,2; Zhou, Lanzhang1,2 |
刊名 | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T |
出版日期 | 2022-05-01 |
卷号 | 18页码:200-209 |
ISSN号 | 2238-7854 |
关键词 | GH984G alloy Phosphorus Segregation sequence Impact toughness Long-term thermal exposure |
DOI | 10.1016/j.jmrt.2022.02.098 |
通讯作者 | Wu, Yunsheng(yswu16b@imr.ac.cn) ; Zhou, Lanzhang(lzz@imr.ac.cn) |
英文摘要 | The segregation sequence of phosphorus and the influence on impact toughness of GH984G alloy, for the application of advanced ultra-super critical (A-USC) power plant, were studied during long-term thermal exposure at 700 ?. The results show that the segregation of phosphorus is associated with the phosphorus content and exposure time. Phosphorus atoms become rich around the MC carbides firstly, then segregates to the grain boundaries and twin boundaries in the form of solute P atoms with increasing phosphorus content and prolonging thermal exposure. Phosphorus can also exist around the MC carbides and at grain boundaries in the form of needle-like phosphide when the alloys with high P content are subjected to long-term thermal exposure. The impact toughness degradation of phosphorus-containing alloys is related to the phosphorus redistribution during thermal exposure. The segregation degree of phosphorus at grain boundaries rises with the increase of P content during thermal exposure. Excess phosphorus segregation at grain boundaries decreases the binding force of grain boundaries and results in the grain boundary embrittlement. Also, the needle-like phosphides around the MC carbides and at grain boundaries in high-phosphorus alloy induce the cracks initiation during impact. Hence, the impact toughness decreases with increasing phosphorus content after thermal exposure at 700 ?. (C) 2022 The Author(s). Published by Elsevier B.V. |
资助项目 | China Postdoctoral Science Foundation[2020M681000] ; National Natural Science Foundation of China[51971216] ; National Natural Science Foundation of China[51871213] |
WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
语种 | 英语 |
出版者 | ELSEVIER |
WOS记录号 | WOS:000803572800002 |
资助机构 | China Postdoctoral Science Foundation ; National Natural Science Foundation of China |
源URL | [http://ir.imr.ac.cn/handle/321006/174224] |
专题 | 金属研究所_中国科学院金属研究所 |
通讯作者 | Wu, Yunsheng; Zhou, Lanzhang |
作者单位 | 1.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China |
推荐引用方式 GB/T 7714 | Wu, Yunsheng,Wang, Changshuai,Qin, Xuezhi,et al. Segregation sequence of phosphorus and its effect on impact toughness of GH984G alloy during thermal exposure[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2022,18:200-209. |
APA | Wu, Yunsheng,Wang, Changshuai,Qin, Xuezhi,Hou, Jieshan,&Zhou, Lanzhang.(2022).Segregation sequence of phosphorus and its effect on impact toughness of GH984G alloy during thermal exposure.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,18,200-209. |
MLA | Wu, Yunsheng,et al."Segregation sequence of phosphorus and its effect on impact toughness of GH984G alloy during thermal exposure".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 18(2022):200-209. |
入库方式: OAI收割
来源:金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。