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Effect of thermal aging on grain structural characteristic and Ductile-to-Brittle transition temperature of CLAM steel at 550 degrees C

文献类型：期刊论文

作者Wang, Wei1,2; Chen, Jianwei1; Xu, Gang1
刊名FUSION ENGINEERING AND DESIGN
出版日期2017-02-01
卷号115期号:无页码:74-79
关键词Clam Steel Grain Structure Misorientation Angle Impact Toughness
DOI10.1016/j.fusengdes.2016.12.037
文献子类Article
英文摘要In this work, electron backscatter diffraction (EBSD) was used to investigate the grain structure evolution of China low actuation martensitic (CLAM) steel samples which were aged at 550 degrees C for 0 h, 2000 h, 4000 h and 10,000 h. The results showed that the prior austenitic grain size increased with the aging time, which led to the decrease of grain boundary length. The fraction of misorientation angle in a range from about 4 to 10 increased obviously after thermal aging for 10,000 h, and it indicated that the fine subgrains formed in the CLAM steel during the long-term thermal exposure. Furthermore, Charpy impact experiments were carried out to analyze the toughness of the CLAM steel before and after aging, particularly the Ductile-to Brittle Transition Temperature (DBTT). Though amounts of fine subgrians formed in matrix, a substantial increase in DBTT (similar to 40.1 degrees C) had been noticed after aging for 10,000 h. The results showed that the high angle boundaries such as prior austenitic grain boundaries are more effective in retarding the propagation of cleavage crack than subgrain boundaries. (C) 2017 Elsevier B.V. All rights reserved.
WOS关键词ACTIVATION MARTENSITIC STEEL ; ELECTRON BACKSCATTER DIFFRACTION ; DRIVEN HYBRID SYSTEM ; TEST BLANKET MODULE ; CONCEPTUAL DESIGN ; MECHANICAL-PROPERTIES ; CORROSION BEHAVIOR ; MATERIAL SELECTION ; 9CR-1MO STEEL ; CHINA
WOS研究方向Nuclear Science & Technology
语种英语
WOS记录号WOS:000394401500010
资助机构International S&T Cooperation Program of China(2015DFG62120) ; International S&T Cooperation Program of China(2015DFG62120) ; International S&T Cooperation Program of China(2015DFG62120) ; International S&T Cooperation Program of China(2015DFG62120) ; International S&T Cooperation Program of China(2015DFG62120) ; International S&T Cooperation Program of China(2015DFG62120) ; International S&T Cooperation Program of China(2015DFG62120) ; International S&T Cooperation Program of China(2015DFG62120) ; National Magnetic Confinement Fusion Science Program of China(2013GB108005 ; National Magnetic Confinement Fusion Science Program of China(2013GB108005 ; National Magnetic Confinement Fusion Science Program of China(2013GB108005 ; National Magnetic Confinement Fusion Science Program of China(2013GB108005 ; National Magnetic Confinement Fusion Science Program of China(2013GB108005 ; National Magnetic Confinement Fusion Science Program of China(2013GB108005 ; National Magnetic Confinement Fusion Science Program of China(2013GB108005 ; National Magnetic Confinement Fusion Science Program of China(2013GB108005 ; China National Natural Science Foundation(51501184 ; China National Natural Science Foundation(51501184 ; China National Natural Science Foundation(51501184 ; China National Natural Science Foundation(51501184 ; China National Natural Science Foundation(51501184 ; China National Natural Science Foundation(51501184 ; China National Natural Science Foundation(51501184 ; China National Natural Science Foundation(51501184 ; 2015GB109006) ; 2015GB109006) ; 2015GB109006) ; 2015GB109006) ; 2015GB109006) ; 2015GB109006) ; 2015GB109006) ; 2015GB109006) ; 11605232) ; 11605232) ; 11605232) ; 11605232) ; 11605232) ; 11605232) ; 11605232) ; 11605232) ; International S&T Cooperation Program of China(2015DFG62120) ; International S&T Cooperation Program of China(2015DFG62120) ; International S&T Cooperation Program of China(2015DFG62120) ; International S&T Cooperation Program of China(2015DFG62120) ; International S&T Cooperation Program of China(2015DFG62120) ; International S&T Cooperation Program of China(2015DFG62120) ; International S&T Cooperation Program of China(2015DFG62120) ; International S&T Cooperation Program of China(2015DFG62120) ; National Magnetic Confinement Fusion Science Program of China(2013GB108005 ; National Magnetic Confinement Fusion Science Program of China(2013GB108005 ; National Magnetic Confinement Fusion Science Program of China(2013GB108005 ; National Magnetic Confinement Fusion Science Program of China(2013GB108005 ; National Magnetic Confinement Fusion Science Program of China(2013GB108005 ; National Magnetic Confinement Fusion Science Program of China(2013GB108005 ; National Magnetic Confinement Fusion Science Program of China(2013GB108005 ; National Magnetic Confinement Fusion Science Program of China(2013GB108005 ; China National Natural Science Foundation(51501184 ; China National Natural Science Foundation(51501184 ; China National Natural Science Foundation(51501184 ; China National Natural Science Foundation(51501184 ; China National Natural Science Foundation(51501184 ; China National Natural Science Foundation(51501184 ; China National Natural Science Foundation(51501184 ; China National Natural Science Foundation(51501184 ; 2015GB109006) ; 2015GB109006) ; 2015GB109006) ; 2015GB109006) ; 2015GB109006) ; 2015GB109006) ; 2015GB109006) ; 2015GB109006) ; 11605232) ; 11605232) ; 11605232) ; 11605232) ; 11605232) ; 11605232) ; 11605232) ; 11605232)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/31730]  
专题合肥物质科学研究院_中国科学院核能安全技术研究所
作者单位1.Chinese Acad Sci, Inst Nucl Energy Safety Technol, Key Lab Neutron & Radiat Safety, Hefei 230031, Anhui, Peoples R China
2.Univ Sci & Technol China, Hefei 230031, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Wei,Chen, Jianwei,Xu, Gang. Effect of thermal aging on grain structural characteristic and Ductile-to-Brittle transition temperature of CLAM steel at 550 degrees C[J]. FUSION ENGINEERING AND DESIGN,2017,115(无):74-79.
APA Wang, Wei,Chen, Jianwei,&Xu, Gang.(2017).Effect of thermal aging on grain structural characteristic and Ductile-to-Brittle transition temperature of CLAM steel at 550 degrees C.FUSION ENGINEERING AND DESIGN,115(无),74-79.
MLA Wang, Wei,et al."Effect of thermal aging on grain structural characteristic and Ductile-to-Brittle transition temperature of CLAM steel at 550 degrees C".FUSION ENGINEERING AND DESIGN 115.无(2017):74-79.

入库方式： OAI收割

来源：合肥物质科学研究院

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