About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Lightweight Composites, Materials, and Alloys
|
| Presentation Title |
Constitutive characterization of 400 MPA 6xxx aluminum alloy |
| Author(s) |
Atish Ray, John E Carsley, Xiao-Xiang Yu |
| On-Site Speaker (Planned) |
Atish Ray |
| Abstract Scope |
Commercial grade high strength 6xxx aluminum alloys, such as AA6111, in their peak aging temper condition (e.g. T6) rarely exhibit appreciable amount of ductility for any sustained forming operation, primarily due to the lack of work hardening capacity at room temperature. A new temper condition is discovered in which both the strength and ductility are simultaneously increased, with an unprecedented room temperature property combination of yield strength above 400 MPA and total failure elongation above 17% based on uniaxial tension tests. Furthermore, the mechanical constitutive responses are characterized by designing warm temperature tensile experiments in Gleeble covering temperature ranges between room temperature to 250 ⁰C and strain rates ranging between quasi-static to 1/s. The constitutive relations will be discussed in terms of stage III work hardening rate of Kocks-Mecking plots. |