Wire and arc additive manufacturing (WAAM) has been attracting industrial attention due to its high productivity and flexibility. However, fatigue life data of WAAM HSLA steel is scarce. In this study, the mechanical properties and fatigue life of thin-walled HSLA steel parts fabricated by WAAM were assessed via non-destructive and destructive testing, providing a comprehensive analysis on this material’s behaviour. The manufacturing conditions have a more pronounced effect on mechanical properties than the part’s height, which seems not to influence the fatigue life of WAAM HSLA steels.

中文翻译：

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线材和电弧增材制造的 HSLA 钢零件的机械特性和疲劳评估

线材和电弧增材制造 (WAAM) 因其高生产率和灵活性而备受业界关注。然而，WAAM HSLA 钢的疲劳寿命数据很少。在这项研究中，通过无损和破坏性测试评估了由 WAAM 制造的薄壁 HSLA 钢零件的机械性能和疲劳寿命，从而对这种材料的行为进行了全面分析。与零件高度相比，制造条件对机械性能的影响更为显着，这似乎不会影响 WAAM HSLA 钢的疲劳寿命。