【摘要】 在1.6×10-3~1.2×103s-1的应变速率范围内,研究了应变速率对10Ni5CrMoV钢室温拉伸性能的影响。结果表明,应变速率对10Ni5CrMoV钢的断裂方式没有影响,拉伸试样均为塑性断裂,断裂微观机制主要是位错滑移;抗拉强度随应变速率增加而略有增加;伸长率随应变速率的增加先下降后上升,但总体无降低;高应变速率并未造成该钢的脆化。根据位错滑移机制对此进行了说明。更多还原

【Abstract】 Effect of strain rate on room temperature tensile properties of 10Ni5CrMoV hull steel was investigated at the strain rates between 1.6×10-3-1.2×103s-1.The experimental results show that strain rate doesn’t affect the fracture mechanism of intragranular dimple and mainly dislocation slipping;the tensile strength is increased slightly along with the increase of strain rate,however,the elongation doesn’t decrease in general which is decreased firstly and raised later with the increase of strain rate,the high strain rate doesn’t embrittle the 10Ni5CrMoV steel.The experimental results can be explained by dislocation slipping.更多还原