Microstructure and Mechanical Properties of Simulated Heat-affected Zones of EP-823 Steel for ADS/LFR

被引：0
|
作者：
Shanping Lu [1 ,2 ]
Tian Liang [2 ]
Yongkui Li [1 ]
Dianzhong Li [1 ]
Lijian Rong [2 ]
Yiyi Li [2 ]
机构：
[1] Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences
[2] Key Laboratory of Nuclear Materials and Safety Assessment,Institute of Metal Research,Chinese Academy of Sciences
来源：
JournalofMaterialsScience&Technology | 2015年 / 31卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Accelerator-driven systems/lead-cooled fast; reactors(ADS/LFR); EP-823; steel; Heat-affected zones(HAZs); Microstructure evolution; Mechanical property;
D O I：
暂无
中图分类号：
TG406 [金属焊接性及其试验方法]; TG142.1 [钢的组织与性能];
学科分类号：
摘要：
EP-823 steel is one of the candidate materials for accelerator-driven systems/lead-cooled fast reactors(ADS/LFR).Its weldability was investigated by mechanical property tests and microstructure analysis on the enlarged heat-affected zones(HAZs) made by numerical and physical simulation.The finite element numerical simulation could simulate the welding thermal cycle of the characteristic regions in HAZs with extremely high accuracy.The physical simulation performed on a Gleeble simulator could enlarge the characteristic regions to easily investigate the relationship between the microstructure evolution and the mechanical properties of the HAZs.The results showed that the simulated partially normalized zone comprising tempered martensite,newly formed martensite and more tiny carbides has the highest impact energy.The fully normalized zone exhibits the highest hardness because of the quenched martensite and large carbides.The ductile property of the overheated zone is poor for the residual deltaferrite phases and the quenched martensite.
引用
收藏
页码：864 / 871
页数：8
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