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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.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Novel Equiatomic and Non-equiatomic Low-density High Entropy Alloys and Composites
Developments in Titanium Alloys for Aero-engine Applications
Effect of Cu Content on Tensile and Low Cycle Fatigue Properties of Cast Al-Cu-Mn-Zr Alloys
Functional Relationships between Treatment Time, Microstructure and Mechanical Properties of Ultrasonically Cast Metal Matrix Nanocomposites
Introductory Comments: Light Metals and Composite Technology
Joining of Light Metals to Polymer Composites by Overcasting Technique
Metastable f.c.c. Phase and Its Influence on the Soft-magnetic Properties of FeCoNiAlxSix (0.2 < x < 0.5) Alloys
Microstructure and Interfaces of Nanocomposites Manufactured in Solid State
Microstructure, Interfaces, and Mechanical Properties of Ceramic Matrix Composites
Nanostructured Composites via Environmentally Controlled Pressure Assisted Sintering
Poly(Carborane-siloxane-(aryl)Acetylene)s: A Versatile Inorganic-Organic Polymer Platform for Advanced Materials Applications
Revisiting Phase Field Simulations of Theta’ Variant Selection during Stress Aging of Al-Cu Alloys

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