使用液压伺服疲劳试验机考察一种新型(汽车前轴用)Nb+V复合微合金非调质钢的疲劳行为,绘制出S-N曲线并分析了疲劳断日特征,研究了其三点弯曲疲劳性能的试样尺寸效应及其原因.结果表明,试样的尺寸对非调质钢的三点弯曲疲劳性能有显著的影响,其三点弯曲疲劳极限随着试样尺寸的减小而增加,但是试样尺寸对疲劳试样的断口形貌几乎没有影响;在三点弯曲疲劳试验中,试样尺寸效应源于试样内部的应力梯度,小尺寸试样的应力梯度比大尺寸试样的高.
参考文献
| [1] | M.J.Balart,C.L.Davis,M.Strangwood,Fracture behaviour in medium--carbon Ti-V-N and V-N microalloyed ferritic-pearlitic and banitic forging steels with enhanced machinability,Materials Science and Engineering A,328(1-2),48(2002) |
| [2] | M.L.N.da Silva,W.Regone,S.T.Button,Microstructuze and mechanical properties of microalloyed steel forgings manufactured from cross-wedge-roiled performs,Scripta Materialia,54(2),213(2006) |
| [3] | F.A.Khalid,Precipitation and compositional changes in the structural phases of microalloyed automotive steels,Materials Science and Engineering A,325(1-2),281(2002) |
| [4] | M.Jahazi,B.Eghbali,The influence of hot forging conditions on the microstructure and mechanical properties of microalloyed steels,Journal of Materials Processing Technology,113(1-3),594(2001) |
| [5] | M.A.Linaza,L.J.Remero,J.M.Rodriguez,J.J.Urcola,Cleavage fracture of rnicroalloyed forging steels,Scripta Metallurgica et Materialia,32(3),395(1995) |
| [6] | 版),30(6),821(2009)) |
| [7] | K.Katagiri,S.Sato,N.Tsuchiya,K.Kasaba,Bending fatigue characteristics of DyBaCuO bulk superconductor,Physica C:Spuerconductivity,468(15-20),1424(2008) |
| [8] | J.A.M.Ferreira,J.D.M.Costa,V.Lapat,Fatigue behaviour of 42CrMo4 steel with PVD coatings,International Journal of Fatigue,19(4),294(1997) |
| [9] | S.P.Wang,Y.J.Li,M.Yao,R.Z.Wang,Fatigue limits of shot-peened metals,Journal of Materials Processing Technology,73(I-3),57(1998) |
| [10] | YANG Zhenguo,ZHANG Jiming,LI Shouxin,CHU Zuoming,HUI Weijun,WENG Yuqing,Fatigue behavior of fine-grained high strength steel 42CrMoVNb,Acre Metallurgica Sinica,40(4),367(2004)(杨振国,张继明,李守新,歹作明,惠卫军,翁字庆,42Cr-MoVNb细晶高强钢的疲劳行为,金属学报,40(4),367(2004)) |
| [11] | R.W.Armstrong,The influence of polycrystal grain size on several mechanical properties of materials,Metallurgical Transactions,1(5),1169(1970) |
| [12] | 材料,31(6),31(2007)) |
| [13] | P.Farsetti,A.Blarnsin,Fatigue behaviour of microalloyed steels for hot-forged mechanical components,International Journal of Fatigue,10(3),160(1998) |
| [14] | R.B.Heywood,Designing against fatigue,(London,Chapman and Hall LTD,1962) p.32 |
| [15] | W.N.Findiey,An explanation of size effect in fatigue of metals,Journal of Mechanical Engineering Science,14(6),424(1972) |
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