Effect of Heating on Mechanical Properties and Microstructures of Explosive Stainless Clad Steels

概要

論文の詳細を見る
Tensile test, microhardness test, and transmission electron microscope investigations have been done of each component metal of explosive austenitic and ferritic stainless clad steels heated at various temperatures. The change in the mechanical properties of an austenitic stainless steel upon heating at a comparatively low temperature is caused by the decrease in the dislocation density and not by the contraction of thin deformation twins. The change upon heating at a higher temperature is responsible for recrystallization, recovery and contraction of deformation twins. The decrease in the microhardness in the region, near the bond interface, of an austenitic stainless steel is due to recrystallization, while the increase in microhardness after prolonged heating is caused by chromium carbides formed by carbon diffused from a low carbon-steel. The reduced carbon content in the low carbon-steel near the bond interface results in a decrease in the microhardness. The change in the mechanical properties of a ferritic stainless steel as-bonded explosively is responsible for the dislocations of high density introduced by deformation as well as α→ε→α transformation.
社団法人溶接学会の論文