Creep Age Forming Modeling and Characterization (original) (raw)

Comprehensive Materials Processing, 2014

Abstract

The creep age forming process (CAF), also known as the creep forming or age forming process, among other less usual designations ( 1–8 ), is a mechanic-metallurgical forming process applicable to parts manufactured from metallic sheets or plates. It is more suitable for large-contoured parts presenting smooth curvatures ( 9 ), such as aircraft wing skins. Differently from other metal-forming processes that are based on plastic flow, the CAF concept has the advantage of using heat treatment cycles of metals to impose stresses to be released under the effect of temperature and time, by creep mechanisms. CAF simultaneously strengthens the part and changes its shape, resulting in a one-step forming and heat treatment process.

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