含缺陷的<strong>Al-Si-Mg</strong>合金的疲劳性能和强度评估

含缺陷的Al-Si-Mg合金的疲劳性能和强度评估

易科尖,吴明泽,张继旺,闫军芳,梅桂明,朱守东,苏凯新

Fatigue Properties and Strength Assessment for Al-Si-Mg Alloy via Test Samples with Artificial Defects

Kejian YI,Mingze WU,Jiwang ZHANG,Junfang YAN,Guiming MEI,Shoudong ZHU,Kaixin SU

表7 试验计算

∆ K_{t h}

与修正预测公式预测结果对比

Table 7 Comparison of experimental calculations

∆ K_{t h}

and revised prediction formula prediction results

Serial number	$\sqrt[]{a r e a}$ /μm	$∆ K_{t h}$ / $M P a \cdot \sqrt[]{m}$	$\begin{array}{l} ∆ K_{t h}^{'} \\ / M P a \cdot \sqrt[]{m} \end{array}$	Error /%
1	370	3.54	3.52	0.56
2	555	4.07	4.03	0.98
3	740	4.39	4.44	1.14
4	925	4.20	4.78	13.81