2238 S45C焼入れ材の降伏挙動に対する二段階引張速度変化の影響(S15-3 実験力学と材料評価(3),S15 実験力学と材料評価)

概要

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It is important to determine mechanical properties, when designing a machines and structures. Although it is appropriate as a basis for evaluating a design to use the yield point, there are many materials in which the yield point does not appear. Quenched S45C steel is one of such materials. In this research, the tensile test for quenched S45C steel was carried out using an intelligent universal test machine. In the relationship between stress and strain, the yield point appeared clearly. When the test condition was changed, the yielding behavior showed different types. The difference in yielding behavior was analyzed using the relationship between stress and time. The yield point appeared clearly when β=1.0. When β=0.9, the yield point appeared after the emergence of the E-P point. The yield point and E-P point did not appear when β was 0.85 or less.
一般社団法人日本機械学会の論文
2007-09-07