The results indicate that stress–strain curve shows strain softening at high strain rates. That is, with the increase of strain,flow stress increases first, when it reaches a peak, it gradually reduces.
结果表明,高应变速率时的应力-应变关系曲线大致呈应变软化型,即随应变的增加,流动应力先是增加,达到某一峰值应力后,又逐渐降低。
参考来源 - 热处理对50SiMnVB钢的动态性能与组织的影响High temperature tensile properties of TMCs were quite sensitive to the strain rates. Tensile strength decreased and the fracture strains increased when the strain rate was lower.
耐热钛基复合材料的高温拉伸性能对应变速率非常敏感,应变速率降低时,高温抗拉强度降低,断裂延伸率提高。
参考来源 - 原位自生耐热钛基复合材料的高温性能研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The flow stress increases with the increase of strain rates.
随着应变速率的增加，稳态流变应力增大；
Average grain size increased and grain became round with strain rates reduction.
应变速率减小，晶粒平均尺寸增大，晶粒变得圆整。
Effect of strain rates on peak flow stress is relate to deformation temperature.
应变速率对峰值应力的影响与变形温度有关。
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