The effect of T6 and hot isostatic pressure thermal treatments on the crack fatigue growth and fracture toughness of AlSi10Mg produced by additive manufacturing

IF 6.8 1区工程技术 Q1 ENGINEERING, MANUFACTURING

Journal of Manufacturing Processes Pub Date : 2025-07-31 DOI:10.1016/j.jmapro.2025.07.065

Busisiwe J. Mfusi , Ntombizodwa R. Mathe , Londiwe Motibane , Daniel Glaser , Omar E. Lopez-Botello , Patricia A.I. Popoola

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引用次数: 0

Abstract

Fatigue in metal components during application is a vital factor that currently affects the development of additive manufacturing technologies such as laser powder bed fusion (LPBF). It is assumed that the initial cracks that propagate and eventually lead to component failure are found inside the sample. Therefore, samples should be designed to withstand fatigue by subjection to cyclic loads in various environments. The precise knowledge of the fatigue crack growth rate (FCG) is important for the component to be replaced in time before complete failure. In this study, the AlSi10Mg samples produced by LPBF were tested for fatigue properties after thermal treatment with T6 and HIP treatment and was compared to as-built and cast conditions. It was observed that after HIP and T6, fatigue resistance improved successfully. Other mechanical characteristics, such as hardness, tensile strength, and residual stress measurements, showed significant improvement compared to stress-relieved samples.

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T6和热等静压热处理对增材制造AlSi10Mg裂纹疲劳扩展和断裂韧性的影响

金属构件在使用过程中的疲劳是影响增材制造技术（如激光粉末床熔融）发展的一个重要因素。假定在试样内部发现了扩展并最终导致构件失效的初始裂纹。因此，样品应设计成在各种环境中经受循环载荷的疲劳。准确地了解疲劳裂纹扩展速率（FCG）对于在部件完全失效前及时更换具有重要意义。在这项研究中，LPBF生产的AlSi10Mg样品经过T6和HIP热处理后的疲劳性能测试，并与铸态和铸态进行了比较。观察到，经过HIP和T6处理后，其抗疲劳性能得到了很好的提高。其他机械特性，如硬度、抗拉强度和残余应力测量，与去应力样品相比有显著改善。

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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来源期刊

Journal of Manufacturing Processes ENGINEERING, MANUFACTURING-

CiteScore

10.20

自引率

11.30%

发文量

833

审稿时长

50 days

期刊介绍： The aim of the Journal of Manufacturing Processes (JMP) is to exchange current and future directions of manufacturing processes research, development and implementation, and to publish archival scholarly literature with a view to advancing state-of-the-art manufacturing processes and encouraging innovation for developing new and efficient processes. The journal will also publish from other research communities for rapid communication of innovative new concepts. Special-topic issues on emerging technologies and invited papers will also be published.