Superplastic Behavior of Friction Stir Processed Aluminum-lithium Alloy
Abstract
Friction stir processing (FSP) is currently being developed as a grain refinement tool for several commercial aluminum alloys. The fine grain size in the nugget region leads to superplasticity. However, the optimum strain rate and overall ductility depends on the alloy composition. In this paper, the superplastic behavior of FSP Al-Li-Cu alloy (AF/C458-T3) is reported. The nugget region of the FSP alloy showed equiaxed grains of 15-16 μm. Maximum ductility of ∼320% was observed at 500 °C and strain rate of 10-3 s-1. Present results show the potential of FSP to achieve superplasticity in a single step as compared to conventional multi-step thermomechanical processing.
Recommended Citation
I. Charit et al., "Superplastic Behavior of Friction Stir Processed Aluminum-lithium Alloy," Friction Stir Welding and Processing, pp. 225 - 234, Wiley, Dec 2001.
Department(s)
Materials Science and Engineering
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
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© 2024 Wiley, All rights reserved.
Publication Date
01 Dec 2001