缺口对通过快速成型技术获得的 AlSi10Mg 铝合金疲劳行为的影响

Procedia Structural Integrity Pub Date : 2024-01-01 DOI:10.1016/j.prostr.2024.01.087

R.F. Fernandes , J.S. Jesus , L.P. Borrego , J.A.M. Ferreira , J.D. Costa

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引用次数: 0

摘要

这项工作将研究通过激光粉末床熔融技术制造的铝合金 AlSi10Mg 在不同切口几何形状的原状和残余应力释放条件下的疲劳行为。疲劳试验（R=0）是在环境温度和负载控制模式下进行的。主要结果表明，应力消除热处理对疲劳强度有轻微的积极影响，并能有效消除残余应力。与无凹槽的试样相比，不同凹槽的存在降低了疲劳寿命。此外，基于 SWT 参数的模型被成功应用于预测疲劳寿命。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Notch effect on the fatigue behaviour of AlSi10Mg aluminium alloy obtained by additive manufacturing

The fatigue behavior of the aluminum alloy AlSi10Mg manufactured by laser powder bed fusion for as-build and residual stress relief conditions with different notch geometries will be studied in this work. The fatigue tests (R=0) are carried out, at ambient temperature and in load control mode. The main results showed that the stress relief heat treatment had a slight positive effect on the fatigue strength, and effectively relieved residual stresses. The presence of different notches decreased the fatigue life when compared to the specimens without notches. Also, a model based on SWT parameter was successfully applied to predict fatigue life.

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