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gang de qu fu qiang du ji ping mian ying bian duan lie ren xing he pi lao lie wen kuo zhan su lv zhi guan xi de jing yan biao da shi
Author(s): 
Pages: 1-9
Year: Issue:  2
Journal: Materials Science and Technology

Keyword:  疲劳裂纹扩展速率应变断裂韧性屈服强度经验表达式热处理状态回火温度平面淬火温度曲线图应力强度因子幅;
Abstract: 测定了5CrNiMo 及3Cr2W8V 钢的疲劳裂纹扩展速率 da/dN。讨论了钢的屈服强度σs 及平面应变断裂韧性 K1C和 da/dN 之间的关系,提出了经验表达式:da/dN=A·(△K)2/E·σs·(K1C-Kmax)。根据一种热处理状态下的 da/dN/△K 关系便可计算获得同种钢在其它热处理状态下的 da/dN 值。
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