Anomalous strain rate sensitivity of twinning was observed in a Mg-Al-Mn magnesium alloy during extrusion around 723 K (450 °C). The density of twins decreases as the ram speed increases. At 10 mm min, relatively high density twins are activated, but much fewer twins were ...
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. The stress increases as thestrain rates increasesbut with different rates of sensitivity. If the strain rate sensitivity of the solder alloy is independent of the magnitude of the plastic strain, the strength of the solder alloys may be expressed simply as a power functionof strain rate....
This sensitivity can be quantified using the strain rate sensitivity formula, m=dln(σ)dln(𝜀˙)m=dln(σ)dln(ε˙), where σ represents the stress and 𝜀˙ε˙ represents the strain rate. The parameter m measures how the stress responds to changes in the strain rate. A ...
12.3.2 Strain-rate sensitivity The strain-rate dependence of the constitutive relation of material reflects the strain-rate sensitivity of the material. Fig. 12.9 shows the uniaxial tensile curve of mild steel at different strain rates. It can be seen that the upper yield point of curve A (at...
Due to the importance of establishing the quantitative mechanical analysis th eory of superplastic deformation, the mechanical meanings of material paramete r k and strain-rate sensitivity index m in Backofen′s constitutive equa tion are discussed. The canonical measurement formulae and methods of m...
Temperature and strain-rate sensitivity will only 青云英语翻译 请在下面的文本框内输入文字,然后点击开始翻译按钮进行翻译,如果您看不到结果,请重新翻译! 翻译结果1翻译结果2翻译结果3翻译结果4翻译结果5 翻译结果1复制译文编辑译文朗读译文返回顶部 温度和应变率敏感性只会...
In the range of high strain rates, the mechanical behaviour of materials is characterized by an increased strain rate sensitivity, by increasing effects of mass inertia forces and by the adiabatic character of the deformation process. For the relation between stress, strain and strain rate, empirica...
Homeostatic model assessment-insulin resistance index (HOMA-IRI) was calculated using the homeostasis model assessment method (fasting insulin in microunits per milliliter multiplied by fasting glucose in millimoles per liter divided by 22.5).9 The insulin sensitivity index was calculated as follows: ...
crystal-plasticity; VPSC; physical-hardening; strain-rate-sensitivity; multiphase-steel; bainitic-steel; formability1. Introduction The viscoplastic self-consistent model (VPSC) [1] allows simulating the plastic behavior of polycrystalline materials, taking into account their crystal structure, grain ...