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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Additive Manufacturing Fatigue and Fracture: Developing Predictive Capabilities
Presentation Title Effect of Post Heat Treatment on Fatigue Strength of AlSi10Mg Produced by Laser Powder Bed Fusion Process
Author(s) Wei-Jen Lai, Avinesh Ojha, Ziang Li
On-Site Speaker (Planned) Wei-Jen Lai
Abstract Scope The effect of the post heat treatment on the fatigue properties was investigated for AlSi10Mg aluminum alloy produced by laser powder bed fusion process. The post heat treatments focused on in this study are stress relief, solutionization, T6, and T5. Quasi-static tensile tests and hardness tests were performed on samples with different post heat treatments and mechanical properties were compared. Fatigue tests were then performed on the same samples to understand the relation between static mechanical properties and fatigue strength. Results show that as-built samples have the highest UTS while T6 samples have the highest yield strength. The hardness has a positive correlation with UTS, not yield strength. The fatigue test results show that as-built samples have the highest fatigue strength and T6 heat treatment did not improve fatigue strength. Besides, stress relieved samples have a fatigue strength close to T6 samples. T5 aging curves show mild age hardening behavior.
Proceedings Inclusion? Planned:
Keywords Additive Manufacturing, Aluminum, Mechanical Properties


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The Elevated Temperature Creep, Fatigue and Fracture Behavior of Additively Manufactured Inconel 718
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