601 ゴムメタルの焼なましに伴う組織変化(材料と組織,オーガナイズドセッション)

概要

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Gum Metal is a newly developed beta titanium alloy, which has a low elastic modulus, high strength, high super-elastic characteristics, super-plastic characteristics, Invar and Elinvar characteristics. These special characteristics have been attributed to its plastic deformation manner based on non-dislocation mechanism. The present study deals with on the microstructural change in Gum Metal sheets that are lightly cold-worked and subsequently annealed, focusing on whether strain-induced boundary migration, SIBM, occurs in the Gum Metal which are popular annealing process in most metallic materials containing medium amount of dislocations. The results obtained are compared with those for a Ti-15V-3Cr-3Sn-3Al alloy, typical beta titanium alloy. Number of traces of SIBM was markedly smaller in the Gum Metal than the Ti-15V-3Cr-3Sn-3Al alloy, implying that annealing mechanism in the Gum Metal is different from other metallic materials.
一般社団法人日本機械学会の論文
2008-09-12