分散強化型合金の強化機構に関する一考察

概要

論文の詳細を見る
To account for the strengthening mechanism in the dispersion hardened 13CrMoTi steel, an analysis of the structural change during the heating at the specimens subjected to hot-working after sintering was made by means of X-ray diffraction method. The results obtained are as follows:<BR>1) The internal strain is introduced into the matrix of the sintered alloys by the hot working. However, very small lattice strain is found in the as hot-extruded specimen, despite of the higher degree of the hot working. This is owing to the recrystallization occurred probably in the cooling stage after extrusion.<BR>2) Structurall analysis demonstrated that the work-hardened structure in the sheath forged specimen is retained even after heating for a long time at the elevated temperature. This offers an explanation for the strengthening increment associated with the hot working of the oxide dispersion strengthened material.
社団法人粉体粉末冶金協会の論文