| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Light Metal and Composites Technology
|
| Presentation Title |
Effect of Cu Content on Tensile and Low Cycle Fatigue Properties of Cast Al-Cu-Mn-Zr Alloys |
| Author(s) |
Sumit Bahl, Xiaohua Hu, Jiahao Cheng, Eric Hoar, Kevin Sisco, J. Allen Haynes, Amit Shyam |
| On-Site Speaker (Planned) |
Sumit Bahl |
| Abstract Scope |
Al-Cu-Mn-Zr (ACMZ) is a new family of affordable, cast aluminum alloys that have high temperature microstructural stability up to 350 °C. Higher temperature microstructural stability is necessary to develop next generation automotive engines with increased efficiency. Good hot tear resistance is required in a cast alloy to manufacture complex components. The hot tear resistance of ACMZ alloys improves with Cu content. Here, we present the effect of Cu content (6-9 wt.%) on high temperature tensile and low cycle fatigue properties of ACMZ alloys relevant for automotive engines. The size and volume fraction of brittle grain boundary intermetallic particles increases monotonically in the microstructure with the Cu content. The linkages between grain boundary particles, tensile properties, and low cycle fatigue properties are explained with the help of experimental observations and finite element simulations. |