A3钢单调拉伸和纯扭转力学性能实验研究

The experimental study on mechanical behaviour of A3 steel under monotonic tension and pure torsion

采用Instron4505实验机和NJ-100B扭转实验机对A3钢试件作单一拉伸和纯扭转实验.实验结果表明,在应变值较小的情况下,拉伸曲线和扭转实验的等效应力应变曲线基本重合,并且在屈服阶段单一拉伸得到的等效应力值要明显高于纯扭转时的等效应力值.实验结果对A3钢在工程中的应用提供了依据.

The experiment on A3 steel is carried out by applying test-machine of Instron4505 and torsion test-machine of NJ-100B under monotonic tension and pure torsion. The results show that the equivalent effective stress-strain curves of monotonic tension and pure torsion basically coincide while the equivalent effective strain is smaller. It is useful to A3 steel in engineering.