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Abstract Two Ta-2.5W alloy sheets were cold-rolled to 1 mm and 0.5 mm thick and their plastic strain ratio (r values) were evaluated by tensile tests. The 0.5 mm sheet, comparing with the… Click to show full abstract
Abstract Two Ta-2.5W alloy sheets were cold-rolled to 1 mm and 0.5 mm thick and their plastic strain ratio (r values) were evaluated by tensile tests. The 0.5 mm sheet, comparing with the 1 mm sheet, showed a stronger variation of the r value. This is because that the {0 0 1}〈1 1 0〉 texture, as revealed by the EBSD, significantly increased in the 0.5 mm sheet, which led to the decrease of r value and the increase of anisotropy (Δr) and in turn the deterioration of deep drawing properties. An analytical model was established to correlate the microstructure evolution and the macroscopic r value.
Journal Title: Materials Letters
Year Published: 2019
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