理化检验：物理分册2012，Vol.48Issue(11)：709-712,4.
机械疲劳对40Cr钢显微组织的影响
Influence of Mechanical Fatigue on Microstructure of 40Cr Steel
摘要
Abstract
40Cr steel was researched as the common material used for automobile crankshaft. TEM was used to observe the change of microstructure, and to find the relationship between the change of microstructure and mechanical fatigue. The research results showed that, in the same stress level, with the fatigue cycle number increased, the dislocations in the 40Cr initiated from the grain boundaries, extended into the grain. And the morphology of the dislocation became to sub grains from bands. The dislocation density increasing caused by mechanical fatigue had liner relationship with fatigue cycle number. The relationship was. p=2.88X10^8N+5.2712X10^8.关键词
40Cr钢/机械疲劳/显微组织/位错密度Key words
40Cr steel/mechanical fatigue/microstructure/dislocation density分类
矿业与冶金引用本文复制引用
吴益文,任晨,华沂,徐凌云,汪宏斌,张聪..机械疲劳对40Cr钢显微组织的影响[J].理化检验：物理分册,2012,48(11):709-712,4.基金项目
国家质检总局科研项目 （）
