【摘要】 冲击疲劳性能是风动工具零件选材和确定热处理工艺的主要参考指标。本文重点研究了合金渗碳钢20Cr2Ni4A,12CrNi3A和18CrNiWA三种钢渗碳处理(以及冰冷处理)后的静强度、冲击疲劳强度,研究了中碳合金钢30CrNi3A和30CrMoA不同热处理后的冲击疲劳性能。对于合金元素对性能的影响和对微观结构影响的机制进行了讨论。更多还原

【Abstract】 The impact fatigue property is the major concerned parameter for material selecting and heattreating method determination of air-tool components. The emphasis in present paper is placed on the static impact fatigue behavior of case hardening steels 20Cr2Ni4A, 12CrNi3A and 18CrNiWA which were subjected to different heat treatments. The effect of heat treating of medium carbon alloying steels 30CrNi3A and 30CrMoA on impact fatigue is also presented in this paper. The alloying element effect on mechanical properties and microstructure is thoroughly discussed.更多还原