GCr15钢超长寿命疲劳破坏的机理
Fracture Mechanism of GCr15 Steel in Very High Cycle Fatigue
摘 要
通过对试样断口的观察、断裂力学分析以及FRASTA仿真的方法,研究了GCr15钢在旋转弯曲加载下超长寿命疲劳破坏的机理,阐述了其内部裂纹萌生和扩展的力学条件,建立了颗粒状白色区域(GBF)的形成机理模型.结果表明:GCr15钢的内部破坏是由材料内部的非金属夹杂物引起的,并且在夹杂物的周围伴有GBF的形成,整个内部裂纹具有典型的“鱼眼”形貌特征;内部起裂是超长寿命疲劳破坏的典型特征.GBF的应力强度因子幅值ΔKGBF(4～6 MPa·m1/2)是控制内部裂纹扩展的临界参数,并且其形成过程占据了超长寿命疲劳过程的绝大部分.
裂纹
应力强度因子幅值
GCr15 steel
very high cycle fatigue
crack
stress intensity factor range
Abstract
Fracture mechanism of GCr15 steel in very high cycle fatigue was studied in rotating bending.Based on the observation of fracture surface,the analysis of fracture mechanics and the simulation with FRASTA method,the initiation and propagation mechanisms of interior cracks were explained and the model of granular bright facet (GBF) formation mechanism was proposed.The test results show that the interior fracture of GCr15 steel was induced by the nonmetallic inclusion in the subsurface of material,the GBF was formed in the vicinity around the inclusion,and the entire interior crack exhibited typical appearance characteristic of “fish-eye”.The interior crack was the typical characteristic of very high cycle fatigue failure.The stress intensity factor range ΔKGBF about 4-6 MPa·m1/2 was the critical parameter of controlling interior crack propagation.The majority of the very high fatigue life was possessed by the formation progress of GBF.
中图分类号 O346.1 O346.2 TB114.3
所属栏目 材料性能及其应用
基金项目 国家“973”计划资助项目(2007CB714705)
收稿日期 2008/5/16
修改稿日期 2009/2/4
网络出版日期
作者单位点击查看
备注李伟(1979-),男,山东潍坊人,博士研究生.
引用该论文: LI Wei,LI Qiang,LU Lian-tao,WANG Ping. Fracture Mechanism of GCr15 Steel in Very High Cycle Fatigue[J]. Materials for mechancial engineering, 2009, 33(5): 37～40
李伟,李强,鲁连涛,王平. GCr15钢超长寿命疲劳破坏的机理[J]. 机械工程材料, 2009, 33(5): 37～40
被引情况:
【1】柴泽,巴发海, "GCr15轴承钢中碳化物的定量分析",机械工程材料 39, 42-45(2015)
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参考文献
【1】KUROSHIMA Y,SAITO Y,SHIMIZU M.Relationship between fatigue crack propagation origination at inclusion and fracture-mode transition of high-strength steel[J].Transactions of the JSME,1994,60:2710-2715.
【2】NAKAMURA T,KANEKO M,TANABE T.Cause of the second drop of the S-N diagram of ADI after leveling off[J].Transactions of the JSME,1995,61:441-446.
【3】NAITO T,UEDA H,KIKUCHI M.Observation of fatigue fracture surface of carburized steel[J].Journal of the Society of Material Science,1983,32:1162-1166.
【4】MASUDA C,ISII A,NISHIJIAMA S.Heat-to-heat variation in fatigue strength of SCr420 carburized steel[J].Transactions of the JSME,1985,51:847-852.
【5】EMURA H,ASAMI K.Fatigue strength characteristics of high strength steel[J].Transactions of the JSME,1989,55:45-50.
【6】MURAKAMI Y,YOKOYAMA N,NAGATA J.Mechanism of fatigue failure in ultra long life region[J].Fatigue & Fracture of Engineering Materials & Structures,2002,25(8/9):735-746.
【7】SHIOZAWA K,LU L T,ISHIHARA S.S-N curve characteristics and subsurface crack initiation behavior in ultra long life fatigue of a high carbon-chromium bearing steel[J].Fatigue & Fracture of Engineering Materials & Structures,2001,24(12):781-790.
【8】SAKAI T,SATO Y,OGUMA N.Characteristic S-N properties of high-carbon-chromium-bearing steel under axial loading in long-life fatigue[J].Fatigue & Fracture of Engineering Materials & Structures,2002,25(8/9):765-773.
【9】SHIOZAWA K,MORII Y,NISHINO S.A study of subsurface crack initiation and propagation mechanism of high strength steel by fracture surface topographic analysis[J].Material Science,2003,52(11):1311-1317.
【10】MURAKAMI Y,ENDO M.Effects of defects,inclusions and inhomogeneities on fatigue strength[J].International Journal of Fatigue,1994,16(3):163-182.
【11】KOBAYASHI T,GIOVANOLA J H.Crack opening profile observation for dynamic cleavage crack propagation and arrest[J].Journal of the Mechanics and Physics of Solids,1989,37(6):759-777.
【2】NAKAMURA T,KANEKO M,TANABE T.Cause of the second drop of the S-N diagram of ADI after leveling off[J].Transactions of the JSME,1995,61:441-446.
【3】NAITO T,UEDA H,KIKUCHI M.Observation of fatigue fracture surface of carburized steel[J].Journal of the Society of Material Science,1983,32:1162-1166.
【4】MASUDA C,ISII A,NISHIJIAMA S.Heat-to-heat variation in fatigue strength of SCr420 carburized steel[J].Transactions of the JSME,1985,51:847-852.
【5】EMURA H,ASAMI K.Fatigue strength characteristics of high strength steel[J].Transactions of the JSME,1989,55:45-50.
【6】MURAKAMI Y,YOKOYAMA N,NAGATA J.Mechanism of fatigue failure in ultra long life region[J].Fatigue & Fracture of Engineering Materials & Structures,2002,25(8/9):735-746.
【7】SHIOZAWA K,LU L T,ISHIHARA S.S-N curve characteristics and subsurface crack initiation behavior in ultra long life fatigue of a high carbon-chromium bearing steel[J].Fatigue & Fracture of Engineering Materials & Structures,2001,24(12):781-790.
【8】SAKAI T,SATO Y,OGUMA N.Characteristic S-N properties of high-carbon-chromium-bearing steel under axial loading in long-life fatigue[J].Fatigue & Fracture of Engineering Materials & Structures,2002,25(8/9):765-773.
【9】SHIOZAWA K,MORII Y,NISHINO S.A study of subsurface crack initiation and propagation mechanism of high strength steel by fracture surface topographic analysis[J].Material Science,2003,52(11):1311-1317.
【10】MURAKAMI Y,ENDO M.Effects of defects,inclusions and inhomogeneities on fatigue strength[J].International Journal of Fatigue,1994,16(3):163-182.
【11】KOBAYASHI T,GIOVANOLA J H.Crack opening profile observation for dynamic cleavage crack propagation and arrest[J].Journal of the Mechanics and Physics of Solids,1989,37(6):759-777.
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