鋼の焼なまし時における応力弛緩に対する前熱処理の影響
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Effects of pre-heattreatment on the anisothermal relaxation of S30C, S45C, SUP3 and quasi-SUP6 during annealing were studied. In order to investigate the relaxation behavior, the changes of load of variously heat-treated steels, which were made to keep the constant deflection in the 4-points-support bending tests, were measured continuously during heating and cooling. In annealed steel, the load remained, to some extent, upto temperature Ac_1, but in quenched or quenched and tempered steel, a sharp decrease of the load was recognized with progress of tempering process. These phenomena can be explained by considering the high-deformability of steel during its structural change. It is necessary to consider these facts in the discussion of the mechanism of stress-relief-annealing.
- 社団法人日本材料学会の論文
- 1962-08-15
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