Influence of temperature on high cycle fatigue properties of high cobalt molybdenum stainless bearing steel
GENG Si-yuan1,2,YANG Mao-sheng2,ZHAO Kun-yu1
(1. College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093,Yunnan, China 2. Institute of Special Steels, Central Iron and Steel Research Institute, Beijing 100081, China)
Abstract:In order to improve the service life and reliability of aerospace bearings,the high cycle rotating bending fatigue properties and failure modes of high cobalt molybdenum stainless bearing steel at different temperatures were studied. With the increase of temperature,the fatigue limit strength of steel decreased gradually. The fatigue limit strength of the steel was 927,840 and 667 MPa respectively under the condition of 25,300 and 500 ℃. The fatigue limit strength of the steel was reduced by 9.4% and 28.0% respectively at 300 and 500 ℃. At 25 ℃,the crack initiation was caused by surface ravine resulting in stress concentration. When the temperature rised to 300 ℃,the hardness of the fatigue specimen decreased and the persistent slip bands appeared under the action of long time alternating stress. At 300 ℃,carbides precipitate and growth accelerated crack initiation. At 500 ℃,the hardness of the matrix continued to decline,so that the persistent slip bands were more likely to occur. Under the action of thermomechanical coupling,the carbides on the edge of the fatigue specimen precipitated,and the carbides growed when heated for a long time. The carbides interacted with the dislocation and produced tiny cracks on the edge of the carbides in the persistent slip bands. The precipitation and growth of carbides accelerated the propagation of fatigue cracks.
收稿日期: 2018-04-24
出版日期: 2018-12-24
引用本文:
耿思远,杨卯生,赵昆渝. 温度对高钴钼不锈轴承钢高周疲劳性能的影响[J]. , 2018, 53(12): 77-85.
GENG Si-yuan,,YANG Mao-sheng,ZHAO Kun-yu. Influence of temperature on high cycle fatigue properties of high cobalt molybdenum stainless bearing steel. Iron and Steel, 2018, 53(12): 77-85.
E.R.De los rios,Ussainj HA micro-mechanics analysis for short fatigue crack[J].growthFatigue & Fracture of Engineering Materials & Structures., 1985, 8(1):49-63
[3]
E.R.De los rios,Ussainj HA micro-mechanics analysis for short fatigue crack[J].growthFatigue & Fracture of Engineering Materials & Structures., 1985, 8(1):49-63
[4]
Hoshide T,Takahashi Y.Simulation of directional distribution of slip-band crack under biaxial low cycle fatigue[J].JSME International Journal Series A, 2004, 47(3):397-402
[4]
Hoshide T,Takahashi Y.Simulation of directional distribution of slip-band crack under biaxial low cycle fatigue[J].JSME International Journal Series A, 2004, 47(3):397-402
[5]
钟群鹏,赵子华.断口学[M].北京:高等教育出版社,2006
[5]
钟群鹏,赵子华.断口学[M].北京:高等教育出版社,2006
[6]
程礼等.超高周疲劳与断裂[M]. 北京:国防工业出版社,2017
[6]
程礼等.超高周疲劳与断裂[M]. 北京:国防工业出版社,2017
[7]
李守新等.高强度钢超高周疲劳性能[M]. 北京:冶金工业出版社,2010
[7]
李守新等.高强度钢超高周疲劳性能[M]. 北京:冶金工业出版社,2010
[8]
Tanaka K, Mura T.A theory of fatigue crack initiation at inclusions[J].Metallurgical and Materials Transactions A, 1982, 13(1):117-123
[8]
Tanaka K, Mura T.A theory of fatigue crack initiation at inclusions[J].Metallurgical and Materials Transactions A, 1982, 13(1):117-123
[9]
Murakami Y, Takahashi K and Yamashita T.Quantitative evalution of the effect of surface roughness in fatigue strength:effect of depth and pitch of roughness[J].Transactions of the Japan Society of Mechanical Engineers .A, 1997, 63(623):1612-1619
[9]
Murakami Y, Takahashi K and Yamashita T.Quantitative evalution of the effect of surface roughness in fatigue strength:effect of depth and pitch of roughness[J].Transactions of the Japan Society of Mechanical Engineers .A, 1997, 63(623):1612-1619
[10]
Chu Wuyang, Zhang Yue, Wang Yanbin,et al.The in-situ TEM observation of nanocrack in titanium aluminide[J].Science in China.Series A:Mathematics, Physics, Astronomy and Technological Sciences, 1995, 28(2):233-242
[10]
Chu Wuyang, Zhang Yue, Wang Yanbin,et al.The in-situ TEM observation of nanocrack in titanium aluminide[J].Science in China.Series A:Mathematics, Physics, Astronomy and Technological Sciences, 1995, 28(2):233-242
Shiozawa K, Weertman JR.Studies of nucleation mechanisms and the role of residual stresses in the grain boundary cavitation of a superalloy[J].Acta Metallurgica, 1983, 31(7):993-1004
[14]
Shiozawa K, Weertman JR.Studies of nucleation mechanisms and the role of residual stresses in the grain boundary cavitation of a superalloy[J].Acta Metallurgica, 1983, 31(7):993-1004
[15]
Yousefiani A, Mohamed FA, Earthman JC.Creep rupture mechanisms in annealed and overheated 7075 Al under multiaxial stress states[J].Metallurgical & Materials Transactions A, 2000, 31(11):2807-2821
[15]
Yousefiani A, Mohamed FA, Earthman JC.Creep rupture mechanisms in annealed and overheated 7075 Al under multiaxial stress states[J].Metallurgical & Materials Transactions A, 2000, 31(11):2807-2821
[16]
YS Lee, J Yu.Effect of matrix hardness on the creep properties of a 12CrMoVNb steel[J].Metallurgical & Materials Transactions A, 1999, 30(9):2331-2339
[16]
YS Lee, J Yu.Effect of matrix hardness on the creep properties of a 12CrMoVNb steel[J].Metallurgical & Materials Transactions A, 1999, 30(9):2331-2339