Effects of Mn on the mechanical properties and high temperature oxidation of 9Cr2WVTa steel

IMR OpenIR

	Effects of Mn on the mechanical properties and high temperature oxidation of 9Cr2WVTa steel
	Jin, Xiaojie; Chen, Shenghu; Rong, Lijian; Chen, SH; Rong, L (reprint author), Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, 72Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
	2017-10-01
发表期刊	ELSEVIER SCIENCE BV
ISSN	0022-3115
卷号	494 页码:103-113
摘要	The mechanical properties and high temperature oxidation behaviors of 9Cr2WVTa steels with Mn contents in the range of 0.04-0.93 wt% were investigated. There are no obvious differences in the tensile properties at room temperature and high temperature, only a slight reduction in the impact toughness when Mn content reaches 0.93 wt%. Remarkably, the high temperature oxidation resistance is significantly improved with an increase of Mn content. After 500 h of oxidation, a ( Fe0.6Cr0.4)(2)O-3 oxide scale is developed on the steel with 0.04 wt% Mn, Mn1.5Cr1.5O4 oxides are occasionally detected when Mn content reaches 0.47 wt%, while a thin compact scale with a mixture of Mn1.5Cr1.5O4 and Cr1.3Fe0.7O3 oxides is formed on the steel containing 0.93 wt% Mn. Addition of Mn promotes the formation of Mn-oxides, which lowers oxygen partial pressure and accelerates external oxidation of Cr. At last, the presence of Mn-Cr spinels and Cr-rich oxides improves the oxidation resistance. (C) 2017 Elsevier B.V. All rights reserved.; The mechanical properties and high temperature oxidation behaviors of 9Cr2WVTa steels with Mn contents in the range of 0.04-0.93 wt% were investigated. There are no obvious differences in the tensile properties at room temperature and high temperature, only a slight reduction in the impact toughness when Mn content reaches 0.93 wt%. Remarkably, the high temperature oxidation resistance is significantly improved with an increase of Mn content. After 500 h of oxidation, a ( Fe0.6Cr0.4)(2)O-3 oxide scale is developed on the steel with 0.04 wt% Mn, Mn1.5Cr1.5O4 oxides are occasionally detected when Mn content reaches 0.47 wt%, while a thin compact scale with a mixture of Mn1.5Cr1.5O4 and Cr1.3Fe0.7O3 oxides is formed on the steel containing 0.93 wt% Mn. Addition of Mn promotes the formation of Mn-oxides, which lowers oxygen partial pressure and accelerates external oxidation of Cr. At last, the presence of Mn-Cr spinels and Cr-rich oxides improves the oxidation resistance. (C) 2017 Elsevier B.V. All rights reserved.
部门归属	[jin, xiaojie ; chen, shenghu ; rong, lijian] chinese acad sci, inst met res, key lab nucl mat & safety assessment, 72wenhua rd, shenyang 110016, liaoning, peoples r china ; [jin, xiaojie] univ sci & technol china, sch mat sci & engn, hefei 230026, anhui, peoples r china
关键词	Steel Mn Mechanical Property High Temperature Oxidation Mn-cr Spinel
学科领域	Materials Science, Multidisciplinary ; Nuclear Science & Technology
资助者	Major Research Plan of the National Natural Science Foundation of China [91226204]; Innovation Foundation of IMR [2015-PY10]
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/79074
专题	中国科学院金属研究所
通讯作者	Chen, SH; Rong, L (reprint author), Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, 72Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Jin, Xiaojie,Chen, Shenghu,Rong, Lijian,et al. Effects of Mn on the mechanical properties and high temperature oxidation of 9Cr2WVTa steel[J]. ELSEVIER SCIENCE BV,2017,494:103-113.
APA	Jin, Xiaojie,Chen, Shenghu,Rong, Lijian,Chen, SH,&Rong, L .(2017).Effects of Mn on the mechanical properties and high temperature oxidation of 9Cr2WVTa steel.ELSEVIER SCIENCE BV,494,103-113.
MLA	Jin, Xiaojie,et al."Effects of Mn on the mechanical properties and high temperature oxidation of 9Cr2WVTa steel".ELSEVIER SCIENCE BV 494(2017):103-113.