应变硬化

The series-wound dashpot of the Burgers model is modified by introducing the strain hardening parameter, and the new model is considered as a combination of the modified dashpot and the Van Der Poel model.

通过引入应变硬化变量，对Burgers模型中串联粘壶进行了改进，并将改进模型看成是由Van Der Poel模型与改进粘壶串联组成。

A hyperbolic sine relationship is found to correlate well the flow stress with the strain rate, and an Arrhenius relationship with the temperature. The strain hardening coefficient n and deformation activation energy Q are evaluated by linear regression analysis. And the flow stress constitutive equation of the alloy during hot compression is obtained.

应变速率和流变应力之间满足指数关系，温度和流变应力之间满足Arrhenius关系，通过线性回归分析计算出该材料的应变硬化指数n以及变形激活能Q，获得该铝合金高温条件下的流变应力本构方程。

The value of strain-hardening coefficient can be determined from the slope of logσ-logε curve, which is numerically equal to the maximum uniform true strain. So the strain-hardening coefficient can be used to evaluate the extend of uniform plastic deformation.

由拉伸实验得到的logσ-logε曲线的斜率即为应变硬化指数，其数值与材料拉伸变形时的最大均匀应变相等，是衡量材料塑性均匀变形能力的力学指标。

Due to the rapid recovery caused by intense diffusion in small-sized grains, the quasicrystal lattice reorders rapidly from disordering, which inhibits the disordering-softening effect.

准晶晶格在形变过程中的无序化由于原子的剧烈扩散而被迅速回复到有序态，无序引起的软化效应被抵消，在高温下的应力一应变曲线也只显示常规的应变硬化。

When NiTi alloys are tensiled at 600 ℃, the dynamic recrystallization occurs. Without electric field, the stress-strain curves were characterized by periodical undee graph, while under the electric field the curves present steady state.

在600 ℃， 2.6×10-2 s-1下，不加电场进行拉伸，得到应力—应变曲线的周期性波浪曲线，而在同样条件下施加电场时，动态再结晶与应变硬化同时发生，形成稳态的流动曲线。

The test results shows that the stress-strain curves of the remoulded expansive soil samples were stress-hardening owing to competely damage of the soil construction under different matric suctions and vertical stresses.

试验结果表明，在不同的基质吸力和竖向荷载下，重塑膨胀土试样由于结构性遭到彻底的破坏，应力应变关系表现为应变硬化特性。

The flow stress of the material changes with deformation, so called strain hardening or workhardening behavior and may be influenced by the rate of deformation.

材料的流量应力变化伴随着材料变形，这就是应变硬化或加工硬化特性而且会收到变形率的影响。

The influence of the microstructure evolution of materials on the strain hardening, the stress and the strain is the key to make metal materials forming by equal channel angular pressing.

研究材料微观组织的演化对应力、应变以及应变硬化等问题的影响，是实现等径角挤压成形技术的关键。

The strain hardening exponent value and strain rate sensitivity value of cast rolling sheet are larger than those of normal rolling sheet.

铸轧板的应变硬化指数和应变速率敏感系数均大于常规轧制板的。

This paper has studied the changes about tensile strain hardening exponent in three kinds of ST steel s by testing n-values and found changing tendency of them.

进行三种ST钢的应变硬化指数n值试验，分析试验结果，研究n值在整个应变区间的变化趋势。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。