Effect of Mo on High-Temperature Fatigue Behavior of 15CrNbTi Ferritic Stainless Steel

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	Effect of Mo on High-Temperature Fatigue Behavior of 15CrNbTi Ferritic Stainless Steel
其他题名	Effect of Mo on High-Temperature Fatigue Behavior of 15CrNbTi Ferritic Stainless Steel
	Liu Tianlong 1; Chen Lijia 1; Bi Hongyun 2; Che Xin 1
	2014
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
卷号	27 期号:3 页码:452-456
摘要	In order to understand the effect of Mo element on the high-temperature fatigue behavior of 15CrNbTi ferritic stainless steel, the stress-controlled fatigue tests have been performed for both 15CrNbTi and 15Cr0.5MoNbTi ferritic stainless steels at 800 degrees C in laboratory air. The fatigue test results indicate that the fatigue resistance of 15Cr0.5MoNbTi steel is manifestly higher than that of 15CrNbTi steel at the maximum stress below 57 MPa; the 15Cr0.5MoNbTi steel possesses a fatigue limit of 35 MPa, which is higher than that of 15CrNbTi steel. The TEM observations reveal that the Mo element can suppress the formation of coarsened Fe3Nb3C precipitates and result in the fatigue resistance enhancement. The dislocation networks formed during the cyclic load favor to improve the fatigue resistance of 15Cr0.5MoNbTi steel at 800 degrees C.
其他摘要	In order to understand the effect of Mo element on the high-temperature fatigue behavior of 15CrNbTi ferritic stainless steel, the stress-controlled fatigue tests have been performed for both 15CrNbTi and 15Cr0.5MoNbTi ferritic stainless steels at 800 ℃ in laboratory air. The fatigue test results indicate that the fatigue resistance of 15Cr0.5MoNbTi steel is manifestly higher than that of 15CrNbTi steel at the maximum stress below 57 MPa; the 15Cr0.5MoNbTi steel possesses a fatigue limit of 35 MPa, which is higher than that of 15CrNbTi steel. The TEM observations reveal that the Mo element can suppress the formation of coarsened Fe_3Nb_3C precipitates and result in the fatigue resistance enhancement. The dislocation networks formed during the cyclic load favor to improve the fatigue resistance of 15Cr0.5MoNbTi steel at 800 ℃.
关键词	TREATABLE ALUMINUM-ALLOYS PRECIPITATE MORPHOLOGY DUCTILE FRACTURE MICROSTRUCTURE STRENGTH NB HAZ Ferritic stainless steel High-temperature fatigue Mo Microstructure
收录类别	CSCD
语种	英语
资助项目	[National Natural Science Foundation of China]
CSCD记录号	CSCD:5198094
引用统计	被引频次：11[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/152672
专题	中国科学院金属研究所
作者单位	1.中国科学院金属研究所 2.Baosteel Grp, State Key Lab Dev & Applicat Technology Automobile S, Shanghai 201900, Peoples R China
推荐引用方式 GB/T 7714	Liu Tianlong,Chen Lijia,Bi Hongyun,et al. Effect of Mo on High-Temperature Fatigue Behavior of 15CrNbTi Ferritic Stainless Steel[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2014,27(3):452-456.
APA	Liu Tianlong,Chen Lijia,Bi Hongyun,&Che Xin.(2014).Effect of Mo on High-Temperature Fatigue Behavior of 15CrNbTi Ferritic Stainless Steel.ACTA METALLURGICA SINICA-ENGLISH LETTERS,27(3),452-456.
MLA	Liu Tianlong,et al."Effect of Mo on High-Temperature Fatigue Behavior of 15CrNbTi Ferritic Stainless Steel".ACTA METALLURGICA SINICA-ENGLISH LETTERS 27.3(2014):452-456.