SLM 马氏体时效钢在变幅加载下的疲劳行为

Procedia Structural Integrity Pub Date : 2024-01-01 DOI:10.1016/j.prostr.2024.02.047

Zbigniew Marciniak , Ricardo Branco , Wojciech Macek , Cândida Malça

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引用次数: 0

摘要

疲劳耐久性是增材制造材料面临的最具挑战性的问题之一。工程部件通常在复杂的变幅载荷下工作，现有的技术缺陷会促进疲劳裂纹的增长，最终导致部件损坏。本研究测试了不同变幅应变水平对 18Ni300 钢疲劳寿命的影响。研究结果表明，材料的各种行为都取决于载荷水平。

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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Fatigue behaviour of SLM maraging steel under variable-amplitude loading

One of the most challenging issues for additive manufactured materials is fatigue endurance. Engineering components often operate under complex, variable amplitude loadings, in which existing technological imperfections promote fatigue cracks growth and damage of elements eventually. In this study the effects of different variable-amplitude strain levels on fatigue life, 18Ni300 steel was tested. The work presents various behaviours of the material depending on the load level.

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