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New Process Produces Superplastic Aerospace/Automotive Aluminum Alloy
Author(s) -
Troeger L. P.,
Starke, Jr. E. A.
Publication year - 2000
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/1527-2648(200012)2:12<802::aid-adem802>3.0.co;2-y
Subject(s) - superplasticity , materials science , alloy , metallurgy , microstructure , elongation , aluminium , grain size , aerospace , automotive industry , ductility (earth science) , ultimate tensile strength , creep , engineering , aerospace engineering
A new thermomechanical process has been developed which renders an Al–Mg–Si–Cu alloy superplastic, making this material a candidate for superplastic forming (SPF). Industrial capabilities were taken into account during process development. The alloy investigated falls within the composition ranges of both aluminum alloys 6013 and 6111. The refined microstructure has an average grain diameter of approximately 10 μm and an average grain aspect ratio near 1.6 and exhibits superplasticity above 500 °C. The uniaxial elongation reached 375 %.