粉末冶金高强度烧结钢的疲劳特性
FATIGUE PROPERTIES OF P/M HIGH STRENGTH SINTERED STEEL
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摘要: 通过测定N-110烧结钢旋转弯曲疲劳下的S-N曲线、疲劳裂纹扩展速率da/dN以及疲劳门坎△Kth,对烧结材料的疲劳特性进行了探讨,初步阐明了孔隙的存在对各种疲劳性能的影响规律以及热处理状态与疲劳性能之间的关系。Abstract: The fatigue characteristics of sintered materials have been investigated by determinating the S-N curve, the fatigue crack propagation rate da/dN and fatigue threshold △kth of N-110 sintered steel by rotating bending fatigue testing machine. The explanation of the influence of porosity on various fatigue properties and the relations between heat treatment and fatigue properties have been discussed.
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