Effect of silicon contents on the microstructures and mechanical properties of heat affected zones for 9Cr2WVTa steels

IMR OpenIR

	Effect of silicon contents on the microstructures and mechanical properties of heat affected zones for 9Cr2WVTa steels
	Wang, Jian; Lu, Shanping; Rong, Lijian; Li, Dianzhong; shplu@imr.ac.cn
	2016
发表期刊	JOURNAL OF NUCLEAR MATERIALS
ISSN	0022-3115
卷号	470 页码:1-12
摘要	The weldability of 9Cr2WVTa steels with silicon content varying from 0.30 wt.% to 1.36 wt.% was studied to meet the requirement of Generation-IV nuclear reactor. Samples of enlarged HAZs were fabricated by a thermal-mechanical simulator based on the simulation and measurement of non-equilibrium phase transformation. The content of delta-ferrite in the HAZs increased with the silicon content and the peak temperature of welding thermal cycle. The impact toughness in the HAZs decreased in different degrees when the delta-ferrite exhibits stripe (lower than 4.82%) or blocky types (higher than 4.82%). Post weld heat treatment (PWHT) has a significant role on improving the toughness. Adding silicon content increased the volume of delta-ferrite and therefore, decreased the tensile strength of the HAZs for 9Cr2WVTa steels. Silicon also as solid solution strengthening element increased the tensile strength. The 9Cr2WVTa steel has good weldability when the silicon content is lower than 0.60 wt.%. (C) 2015 Elsevier B.V. All rights reserved.
部门归属	[wang, jian ; lu, shanping ; li, dianzhong] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [wang, jian ; rong, lijian] chinese acad sci, inst met res, key lab nucl mat & safety assessment, shenyang 110016, peoples r china
关键词	9cr2wvta Steel Silicon Content Delta-ferrite Solid Solution Strengthening Weldability
资助者	National Natural Science Foundation of China [91226204]; Chinese Academy of Science Strategic Pilot Project (The future of advanced nuclear energy-ADS evolution system) [XDA03010304]
收录类别	sci
语种	英语
WOS记录号	WOS:000370379100001
引用统计	被引频次：22[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/74770
专题	中国科学院金属研究所
通讯作者	shplu@imr.ac.cn
推荐引用方式 GB/T 7714	Wang, Jian,Lu, Shanping,Rong, Lijian,et al. Effect of silicon contents on the microstructures and mechanical properties of heat affected zones for 9Cr2WVTa steels[J]. JOURNAL OF NUCLEAR MATERIALS,2016,470:1-12.
APA	Wang, Jian,Lu, Shanping,Rong, Lijian,Li, Dianzhong,&shplu@imr.ac.cn.(2016).Effect of silicon contents on the microstructures and mechanical properties of heat affected zones for 9Cr2WVTa steels.JOURNAL OF NUCLEAR MATERIALS,470,1-12.
MLA	Wang, Jian,et al."Effect of silicon contents on the microstructures and mechanical properties of heat affected zones for 9Cr2WVTa steels".JOURNAL OF NUCLEAR MATERIALS 470(2016):1-12.