| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
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| Symposium
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TMS-DGM Symposium: A Joint US-European Symposium on Linking Basic Science to Advances in Manufacturing of Lightweight Metals
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| Presentation Title |
Fracture Mechanisms under Monotonic Tensile, Fatigue, and Creep Deformation of Cast Al-Cu-Mn-Zr Alloys: Impact of Brittle Intermetallic Grain Boundary Particles |
| Author(s) |
Sumit Bahl, Xiaohua Hu, Jiahao Cheng, Eric Hoar , Kevin Sisco, Richard A. Michi, J. Allen Haynes, Amit Shyam |
| On-Site Speaker (Planned) |
Sumit Bahl |
| Abstract Scope |
Cast aluminum alloy microstructures often contain brittle intermetallic phases that can impact the alloy’s fracture behavior. Here, we describe a set of higher temperature cast Al-Cu-Mn-Zr (ACMZ) alloys containing 6 – 9 wt.% Cu, designed to have controlled fraction of brittle intermetallic grain boundary θ (Al2Cu) particles in the microstructure. The designed set of alloys allows for a systematic investigation into the impact of brittle θ particles on fracture behavior of ACMZ alloys under various deformation modes including monotonic tensile, low cycle fatigue, and creep. These deformation modes are relevant for higher temperature Al alloys, specifically used in automotive engine applications. Microstructural characterization and finite element simulations are used to explain the contrasting effects of θ particles noted on fracture mechanisms as a function of deformation mode with potential implications on alloy design and development. |
| Proceedings Inclusion? |
Planned: |