The 22nd Advanced Aerospace Materials and Processes (AeroMat) Conference and Exposition (May 23-25, 2011) of ASM

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Monday, May 23, 2011 - 9:00 AM
SSF1.2

High Temperature Formability Behavior of ATI 425® Alloy Sheet

L. J. Ruiz-Aparicio, ATI Allegheny Ludlum, Natrona Heights, PA; B. Swale, Aeromet International PLC, Welwyn Garden City, United Kingdom

Following its recent qualification in the Metallic Materials Properties Development and Standardization (MMPDS) Handbook, extensive testing of ATI 425® Alloy sheet has been conducted to evaluate its hot temperature formability.  Commercial production of a variety of aerospace parts has shown that this cold rollable (alpha+beta) Ti alloy can be super plastically formed at significant lower temperatures than those employed for other incumbent Ti alloys.  These results indicate that ATI 425® Alloy has similar SPF mechanical properties and gauge thinning behavior to pack-rolled Ti-6Al-4V alloy sheets.  A discussion of potential savings to aerospace OEM’s and fabricators will be presented when this lower temperature behavior offered by ATI 425® sheet is combined with some of its additional product attributes, such as tight gauge tolerance and surface finish.