Affiliation:
1. School of Materials Science and Engineering, Xiangtan University, Xiangtan, 411100, Hunan, PR China
Abstract
High-angle annular dark-field scanning transmission electron microscopy, scanning electron microscopy, and tensile tests were used to investigate the effects of rapid cold stamping deformation on the precipitation and mechanical properties of spray-formed fine-grained Al–Cu–Mg
alloy during aging. The number of longplate S′ phases in peak-aged samples evidently increases with increasing number of rapid cold stamping passes. After two passes of rapid cold stamping, the distribution of long-plate S′ phases in the samples is evidently uneven, with high density
in some areas and low density in some areas. The S′ phases are refined, the number is further increased, and the distribution is uniform after four passes of rapid cold stamping deformation. The overall performance of the material is excellent. The tensile strength, yield strength, and
elongation are 512 MPa, 453 MPa, and 11.2%, respectively.
Publisher
American Scientific Publishers
Subject
General Materials Science
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