True strain strain rates and temperatures were input parameters of the model while flow stress was the only output parameter .

在该模型中， 等效 应变、等效应变速率和变形温度是模型的输入向量，输出向量是材料的流动应力。

At the true strain of 0.7 the security processing region is that the deformation temperature is 400 ~ 500 ℃ the strain rate is 0.001 ~ 0.018s-1 .

当真 应变为0.7时，安全加工区域为变形温度400～500℃，应变速率0.001～0.018s-1。

The feature of the style is that it can obtain large true strain after per pass deformation which was often used to obtain the ultra-fined grained material because it can realize severe plastic shearing deformation .

这种变形方式的特征是一次变形可以获得很大的 真 应变，通常应用其强烈的塑性剪切变形来获得超细晶材料。

The equation was used for the calculation of the equivalent true strain for equal channel angular pressing and the result is exactly the same as that obtained from directly analyzing the geometrical change of the specimen in the process and corresponds to the experimental result .

将该公式应用于等径弯曲通道变形中 真 应变的计算，与直接分析试件的几何变形得出的计算公式完全相同，而且与实验测定的 真实等效 应变吻合很好。

The pattern of hot-deformation of IN 706 alloy at different tempera ture and true strain rate was studied .

对 IN706合金在不同温度及 应 变速率下的热变形行为及规律进行了研究。

In the superplastic deformation of Al Mg alloys an abnormal type of cavity evolution is found . Cavity growth manifests wave type with the increasing true strain .

在AlMg合金超塑变形过程中，发现了一类反常的空洞演化规律，也就是空洞随 真 应变的增加而呈现波浪型的演化规律。

Relationship between tensile strength and true strain of cold drawn pearlitic steel wire

布伦特韦伊塞拉频率冷拉珠光体钢丝的抗拉强度与 真 应变的关系

The dynamic restoration mechanisms during hot torsion were examined by the true stress true strain curves optical and electron microscopy .

采用真应力－ 真 应变曲线，偏振光金相和透射电子显微镜研究该合金热扭转过程的动态复原机制。

The calculation mold of true stress and true strain were built according to the data of load and displacement during hot deformation by matlab software . Moreover experimental values of section area were compared to those from calculation .

根据在 拉伸过程中采集的瞬时载荷、瞬时位移数据，应用Matlab软件建立了其在热变形过程中的真应力 真 应变计算模型，并把实际测量的截面面积与模型计算值进行了比较。

When the true strain is 0.8 and deformation temperature is in the range of 1223 ~ 1323 K full dynamic recrystallization occurs in the test steel at strain rate of 0.2 ~ 10 s ~ -1.The hot deformation activation energy Q of test steel is 289.9 kJ / mol.

试验用钢在 真 应变为0.8，温度为1223~1323K，应变速率为0.2~10s-1的条件下，发生完全动态再结晶。

The compressive true stress - true strain curves were measured and hot deformation microstructures were observed .

测试了其 真应力 应变曲线，观察了变形后的显微组织。

Wear resistance of 0.7 % C steel was improved with increasing true strain amount when alumina and quartz particles were used as abrasives .

在以氧化铝和石英为磨料工况下，随着0.7%碳钢 真 应变增加，耐磨性缓慢提高；

Ultrahigh carbon steel ( UHCS-3.0Si ) was tested by isothermal compression physical simulation tests as spray-formed state and true stress vs. true strain curves were obtained .

对喷射态超高碳钢UHCS-3.0Si进行了等温压缩物理模拟试验，测定了真应力- 真 应变曲线。

The results showed that superplastic compressive deformation in hot-pressed Y-TZP could be observed and the true strain was up to-1 . 30 . The effects of strain rate and temperature on superplastic deformation were discussed .

结果表明热压Y－TZP可以 超塑性压缩变形至－ 1.30。讨论了 应变速率和温度对超塑性变形的影响。

But the true stress-true strain curve does not accompany stress oscillation when discontinuous dynamic recrystallization occurs .

Z较小时，发生不连续动态再结晶，但真应力 真 应变曲线未出现波动。

Development of software of true stress-true strain computation and analysis for high-temperature tension

高温拉伸 真应力- 真 应变计算分析软件开发

The static recrystallization rate was calculated by the way of back-extrapolation under the different true strain . It shows that the static softening of this steel can be easily occurred after deformation by the testing static softening dynamic experiment of two-pass compression .

采用后插法计算了在不同 真 应变条件下的静态再结晶率，通过双道次压缩测试静态软化动力学实验的表明，实验钢变形后很容易发生静态软化。

Calculation Model and Experimental Verification on True Strain and True Stress in Hot Tensile Test

高温拉伸试验中真应力 真 应变的计算及试验研究

The results show that the flow stress increases with the increase of strain rate and the true stress-true strain curves at different temperature and strain rates are stable-state .

结果表明，流动应力随应变速率的增大而增大，不同温度和应变速率的 真应力- 真 应变曲线呈稳态流动型。

And the influences of true strain on three-body abrasive wear property under the conditions of abrasive wear using quartz and glass sand were researched .

用强烈 拉伸 塑性 变形法制备纳米结构高强度 珠光体钢丝，将其与聚氨酯复合制备复合材料，并研究了该复合材料的三体磨料磨损性能。

Super fine grain under 1 μ m can be obtained after measuring the marginal true strain and recrystallization annealing .

在测定临界 真 应变和确定再结晶退火制度后，获得了尺寸在1μm以下的超细晶。

Specimens of high purity Aluminum of 99.992 % grade were hot compressed to a true strain of 0.92 at 533773 K and with strain rates of 0.0022.000 s ~ ( - 1 ) .

将99.992%高纯多晶铝在533～773K时以0.002～2.000s-1的应变速率压缩到其 真 应变为0.92。

The results are shown as following : 1 . The true stress - true strain curves of 7150 and 7056 aluminum alloys both appear steady-state deformation features apparently .

主要内容如下：1.Al-Zn-Mg-Cu-Zr合金的真应力& 真 应变曲线均出现明显的稳态变形特征。

At low strain rate the true stress increases with true strain rapidly and enters a steady state after reached peak flow .

在较低变形速率条件下，真应力随 真 应变迅速增加，到达峰值后便进入稳态 变形阶段；在较高 变形速率 条件下， 真应力到达峰值后，迅速下降，随之进入稳态变形阶段。

Texture evolution at tensile true strain 0.25 and 0.37 are predicted by two polycrystal models ( Taylor-type model and finite element model ) .

两种多晶模型（Taylor模型和有限单元模型）分别模拟了单向拉伸 真 应变0.25和0.37时的织构演化。

This paper analyses theoretically the relationship between the crosshead speed and the true strain rate in tensile test thereby suggests a testing method realizing the constant strain rate on a common tensile machine for investigating superplasticity of metals .

本文从理论上分析了拉伸试验中 真 应 变速率与夹头移动速率之间的关系，提出一种在普通拉伸试验机上实现恒应变速率变形进行超塑性研究的方法。

The relationship of true stress and true strain for the mid-strength weldable 1420 Aluminum-Lithium alloy has been investigated in this thesis by high temperature compression testing and high temperature tensile testing on different hot deformation conditions .

本文通过高温压缩和高温拉伸试验，研究了中强可焊1420铝锂合金热变形时不同变形条件下的应力- 应变关系、变形条件对合金流变应力的影响；

In this method the true stress & true strain curves in equal temperature and equal strain rate can be obtained more exactly .

按照这套方法可得到更加准确的等温等应变速率真应力 真 应变曲线。

According to optimization process principle it is determined that the optimal process parameters at the true strain of 0.7 are 500 ℃ -0.01s-1 and 450 ℃ -0.001s-1 .

并根据优化工艺原则确定该合金在 真 应变为0.7时最优变形工艺参数为500℃-0.01s-1和450℃-0.001s-1。

For the compressive true stress-true strain curves the maximum compressive strength gradually reduces and moves towards the direction of the true strain reducing with increasing temperature and decreasing strain rate .

对于压缩 真应力-真应变曲线，随着温度的升高和应变速率的降低，最大压缩强度逐渐减小并有向 应变减小的方向移动的趋势。