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Effect of Mo on High-Temperature Fatigue Behavior of 15CrNbTi Ferritic Stainless Steel
Alternative TitleEffect of Mo on High-Temperature Fatigue Behavior of 15CrNbTi Ferritic Stainless Steel
Liu Tianlong1; Chen Lijia1; Bi Hongyun2; Che Xin1
2014
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Volume27Issue:3Pages:452-456
AbstractIn 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.
Other AbstractIn 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 ℃.
KeywordTREATABLE ALUMINUM-ALLOYS PRECIPITATE MORPHOLOGY DUCTILE FRACTURE MICROSTRUCTURE STRENGTH NB HAZ Ferritic stainless steel High-temperature fatigue Mo Microstructure
Indexed ByCSCD
Language英语
Funding Project[National Natural Science Foundation of China]
CSCD IDCSCD:5198094
Citation statistics
Cited Times:5[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/152672
Collection中国科学院金属研究所
Affiliation1.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
Recommended Citation
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.
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