超音波顕微鏡によるステンレス鋼の加工誘起変態・逆変態の評価

概要

論文の詳細を見る
Deformation-induced martensite and reversed austenite of metastable austenitic stainless steel sheet were evaluated by a scanning acoustic microscope with frequencies 600 MHz and 800 MHz. The sheet was elongated up to 40% below the room temperature, followed by annealing. First martensite content was measured by a feritscope. Using a complex V(z) curve, leaky Rayleigh wave velocity was measured. The deformed and annealed textures were observed with the frequency 800 MHz and compared with those by the optical microscope. Rayleigh wave velocity is dependent on the elongation and ambient temperature in elongation, and the annealing temperature, which agrees well with the one by the feritscope. Deformed grains are more clearly observed by the scanning acoustic microscope.
一般社団法人日本機械学会の論文
1999-05-25