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4 Al-7Si-0.6Mg试样Ueno公式预测结果与试验结果对比

Table 4 Comparison of predicted results and experimental results of Ueno formula for Al-7Si-0.6Mg samples

Serial number	$\sqrt[]{a r e a}$ /μm	$σ_{5 \times 10^{7}}$ /MPa	$σ_{10^{7}}$ /MPa	$σ_{w}$ /MPa	$σ_{5 \times 10^{7}} / σ_{w}$	$σ_{10^{7}} / σ_{w}$
1	370	80	80	91.6	0.87	0.87
2	555	75	75	85.6	0.88	0.88
3	740	70	75	81.6	0.86	0.91
4	925	60	70	78.6	0.76	0.89