9Ni3CrMoV钢形变强化能力的研究

详细信息

Study on the Deformation Hardening Ability of 9Ni3CrMoV Steel

摘要: 从3种不同厚度规格（36mm, 5 0mm, 80mm ）的9Ni3CrMoV钢板中不同部位及不同方向取样, 用圆试样测定了拉伸应力应变曲线, 计算了该钢的形变强化指数n值, 研究了取样部位和取样方向对n值的影响, 结果表明, 试样取样部位和取样方向对n值的影响不大, 9Ni3CrMoV钢的n值与屈强比σ_s/σ_b 及屈服强度σ_s 呈明显线性关系。在最大载荷下, 9Ni3CrMoV钢的真应变ε_b 低于其形变强化指数n值, 两者相差约 10 %。
- 应力 /
- 应变 /
- 形变强化指数 /
- 9Ni3CrMoV钢
Abstract: Round-section specimens instead of plate specimens which were sampled from different position and direction out of three thickness 9Ni3CrMoV plate steels of 36mm, 50mm and 80mm were prepared to measure the tensive flow behaivor．The work hardening exponents（n value） were calculated out of the obtained curves, and the influence of sampling position and direction on n value was investigated．The results indicate that the sampling position and direction have little effect on n value．The n value is linearly proportional to σ_s／σ_b or σ_s．Under the maxium load,the true strain or ε_b of 9Ni3CrMoV steel is less than n value, and their quantitative difference is within 10 percent．
- Stress /
- Strain /
- Work hardening exponent /
- 9Ni3CrMoV steel