Timken 16-25-6 の高温機械的性質に関する研究 (II)

概要

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The authors studied the effects of solution treatment on Timken alloys before hot-cold working, working temperature and reduction of working on creep rupture properties at 650℃, 31.5kg/mm^2. The results were as follows. (1) Creep resistance increased by the solution treatment before hot-cold working, but ductility of creep rupture testing prominently decreased by it as compared with the test pieces which were hot-cold worked at the comparable working condition and not solution-treated before hot-cold working, although the hardness of the test pieces of the comparable working condition were not different. (2) Creep rupture time decreased, and ductility increased as working temperature increased. Creep rate of the specimens worked at 700 and 800℃ were not different regardless of the reduction of working and preheat-treatment. The third stage creep strain of the specimens which were hot-cold worked at 700℃ were smaller than when it was hot-cold worked at 800℃. (3) Creep rupture life decreased while the reduction of working increased regardless of the increasing hardness. Ductility decreased, while the reduction of working at any working temperature increased.
社団法人日本鉄鋼協会の論文
1956-02-01