12%Cr 耐熱鋼の組織変化に及ぼすクリープ変形の影響

概要

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The effect of creep deformation on microstructural change in 12% Cr heat resisting steel was investigated by comparing the gauge and head regions of creep rupturod specimens. Such microstructural changes as recovery, precipitation rate and coarseness of precipitates were promoted by creep deformation. When the precipitation behaviors of the gauge and head regions with the same hardness were compared, the precipitation behavior of the gauge region was smaller in amount, smaller in mean diameter of precipitates and shorter in interparticle spacing than that of the head region. The promoting ratio of recovery increased with increasing the strain and with lowering the temperature. This result supports the thought that increase in diffusion coefficient by creep deformation promotes microstructual change.
社団法人日本材料学会の論文
1982-11-15