About this Abstract |
Meeting |
12th International Conference on Magnesium Alloys and their Applications (Mg2021)
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Symposium
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12th International Conference on Magnesium Alloys and their Applications (Mg 2021)
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Presentation Title |
Aging Kinetics within GP-zone Forming, Dilute, Quaternary Alloys Containing Ca |
Author(s) |
Oluwaniyi Azeez Ajiteru, Sean R. Agnew |
On-Site Speaker (Planned) |
Oluwaniyi Azeez Ajiteru |
Abstract Scope |
Quaternary alloy systems Mg-Al-Ca-Mn (AXM) and Mg-Zn-Zr-Ca (ZKX) have emerged as promising candidates for application due to an attractive combination of properties, including good ductility and moderate strength as well as high extrusion limits. In order to achieve this good balance of properties, the alloys rely upon the formation of a dense population of ordered, Guinier-Preston (GP) zones which contain Al and Ca (AXM) or Zn and Ca (ZKX), respectively. It has already been shown that they exhibit attractive aging characteristics, such as a short aging times to obtain the peak-aged condition, and this has made them attractive for paint bake-hardening. In the present study, the focus is on over-aging. Samples are aged over a range of temperatures with the goal of determining if these alloys are vulnerable to “natural over-aging,” that is over-aging at ambient temperatures, within a time frame that could jeopardize their usefulness in application. |
Proceedings Inclusion? |
Planned: At-meeting proceedings |