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Fatigue Properties of Supersteel for Automobiles

机译:汽车用超级钢的疲劳特性

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摘要

The fatigue properties of 400 MPa grade supersteel, plain low carbon steel SS400 and microalloyed steel Q340TM were investigated through tensile-compression fatigue experiment with R = - 1. The results indicate that the fatigue limit of the 400 MPa supersteel is higher than that of SS400 steel and close to that of the 340TM steel. According to the analysis of fatigue fracture, the fatigue striations of supersteel SS400 is thinner than that of SS400 steel and 340TM steel, and grain refinement can increase the fatigue limit.
机译:通过R =-1的拉伸压缩疲劳试验研究了400 MPa级超钢,普通低碳钢SS400和微合金钢Q340TM的疲劳性能。结果表明,400 MPa级超钢的疲劳极限高于SS400。钢,并接近340TM钢。根据疲劳断裂分析,超级钢SS400的疲劳条纹比SS400钢和340TM钢的疲劳条纹细,细化晶粒可以增加疲劳极限。

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