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6 含人工缺陷的Al-7Si-0.6Mg试样

∆ K_{t h}

计算结果(括号内为预测误差)

Table 6

∆ K_{t h}

calculation results for Al-7Si-0.6Mg samples with artificial defects (predicted error in parentheses)

Serial number	$\sqrt[]{a r e a}$ /μm	$∆ K_{t h} / M P a \cdot \sqrt[]{m}$	$∆ K_{M} / M P a \cdot \sqrt[]{m}$	$∆ K_{U} / M P a \cdot \sqrt[]{m}$
1	370	3.54	5.84(64.97%)	3.83(8.19%)
2	555	4.07	6.69(64.37%)	4.38(7.62%)
3	740	4.39	7.36(67.65%)	4.82(9.79%)
4	925	4.20	7.93(88.81%)	5.20(23.81%)