About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing: Materials Design and Alloy Development V – Design Fundamentals
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Presentation Title |
Effect of Stress Relief Temperature on Microstructure and Mechanical Behavior of Additively Manufactured Ti-5Al-5Mo-5V-1Cr-1Fe |
Author(s) |
Mohammad Salman Yasin, Shuai Shao, Nima Shamsaei |
On-Site Speaker (Planned) |
Mohammad Salman Yasin |
Abstract Scope |
Although stress relief is commonly used for residual stress removal from additively manufactured parts, it sometimes can impact their microstructures and thus mechanical properties. This study analyzed the influence of stress relief temperature on the microstructure and mechanical behavior of laser powder bed fused (L-PBF) Ti-5Al-5Mo-5V-1Cr-1Fe (Ti-55511). L-PBF round bars were stress relieved at two temperatures (700°C and 900°C for an hour, respectively) and machined into test specimens. Defect evolution as the result of stress relief was also studied through X-ray computed tomography. Although the as-built microstructure primarily comprised β and ω phases, they were mostly converted to lamellar α after exposure at 700°C (with ~13% β and ~8% ω remaining). After the 900°C stress relief, only 0.2% of β and ω remained in total, leaving relatively coarser α laths. Both tensile and fatigue tests will be performed and the measured properties will be correlated to the micro-/defect- structures |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Titanium, Mechanical Properties |