S1108-4-1 粘塑性パラメータ同定のための高温・高速ねじり試験機の開発([S1108-4]卒業研究コンテスト(4))

抄録

Viscoplastic parameters are required to simulate such a hot forging process and creep failure. These phenomem greatly depend on viscoplastic behavior of materials. The present paper describes a developed test rig which enables the viscoplastic parameters of metals to be identified. In the test, a hollow circular bar is twisted under the maximum bai temperature of 1473 K and the maximum strain rate of 10 s^<-1>, and the angle of torsion and applied torque are mesured The viscoplastic parameters can be evaluated from the relationship between them.