屈服强度

The simulation result of the enameling process at high temperature shows that with the increase of soaking temperature and holding time-the yield strength and tensile strength increase,and the total elongation decreases.

经857℃保温10 min后，钢板的屈服强度满足了不小于310 MPa的要求。预变形时的变形量对模拟高温搪烧后钢板的力学性能也会产生影响。

The research indicates that the microstructure of this type of material is granular bainite of fine crystal, and both of the tensile and impact properties at room temperature and low temperature are superior to that of China B7 steel and the Japanese fishplate materials.

研究结果表明：该材料的显微组织为晶粒细小的粒状贝氏体，常温和低温下材料的拉伸、冲击性能均高于国内现用的B7钢及日本鱼尾板材料，在室温和－55℃下材料的屈服强度分别为722，738 MPa，伸长率分别为60.7%和41.7%。

The results show t hat yttrium exists as the form of compound (Al2Y) in AZ31 magnesium alloy, and dystectic Al2Y as the heteromorphic nucleation emerges firstly in the cou rse of alloy precipitation, which refines the alloy's microstructure and obviou sly improves the mechanical properties at room and high temperature. The average grain size of AZ31 magnesium alloy containing Y is reduced by 35.82%. Tensile s trength, yield strength and elongation percentage reach 212 MPa, 147 MPa, and 7. 5% at room temperature respectively, and 117 MPa, 98 MPa, and 10.2% at 200 ℃ re spectively.

结果表明，Y在AZ31 镁合金中主要以块状Al2Y化合物形式存在；高熔点的Al2Y在合金凝固过程中首先析出，成为凝固的异质形核剂，从而细化了合金组织，改善了室温和高温力学性能；由于Y的强化，含Y AZ31镁合金平均晶粒尺寸降低幅度约为35.82 %；室温抗拉强度、屈服强度和延伸率分别为 212 MPa， 147 MPa和7.5%，200 ℃时分别为117 MPa， 98 MPa和10.2%。

The relation between the performance of hot rolled plate and the nitrogen content in the steel are discussed.

讨论了热轧板性能与钢中氮的关系；指出了钢中氮质量分数的减少可降低热轧板屈服强度，且满足供冷轧基料的要求。

The results show that the highest yield strength and IGC resistance are obtained by 190 ℃/ 60 min retrogression and reaging. But when the alloy is treated near the lowest value of hardness curve of retrogression, the lowest IGC resistance is gotten by 190 ℃/4 min retrogression treatment.

结果表明：合金经190℃/60min回归和再时效处理，屈服强度最高，抗晶间腐蚀能力最好，具有最佳的综合性能；但合金在接近回归硬度曲线的谷值时，经190℃/4min回归处理，抗晶间腐蚀性能最差。

Based on this analysis, a new method for evaluating the bluntness magnitude of a Berkovich indenter was proposed. This method was examined by the experimental results of indention loading curves for pure nickel and aluminum alloy 8009, and good agreement was obtained. For thin metal films deposited on hard substrate, a method is established for determining the yield strength and hardening index of the film from nanoindentation loading curve.

通过对理想与钝化Berkovich压头以及球形压头纳米压入软膜/硬基材料加载过程的数值研究，给出了两种压头纳米压入加载曲线的幂函数拟合指数及最大压入载荷同膜、基材料基本力学性能间的函数关系，并分别就Berkovich压头与球形压头建立了由纳米压入加载曲线确定沉积在陶瓷基体上金属薄膜屈服强度与硬化指数的方法。

Pultruded fiberglass has 86% of the yield strength of aluminum and, pound-for-pound's, stronger than aluminum in the lengthwise direction.

拉挤玻璃纤维有86 ％的屈服强度铝和，英镑，为英镑的，比铝强，在纵向的方向。

The results showed that pure copper plates of 25mm in width and 5mm in thickness with luminant surface and columnar crystals can be continuously and stably fabricated under the conditions of melting temperature 1160℃,drawing speed .

结果表明：当熔体温度1160℃、下拉速度70mm/min、冷却水量900L/h时，可以连续稳定成形宽25mm、厚5mm且表面光亮、具有连续柱状晶组织的纯铜板材，其抗拉强度为146MPa，屈服强度为33MPa，延伸率为54%，电导率为105。

Most published handbook data report matal elastical limit as the yield strength measured at an offset strain of 0.2%.

大多数已出版的手册上有关材料屈服强度的数据，是以应变偏移0.2%而测得的弹性极限值。

A method to measure the outer radial deformation curve of tubular specimen under internal pressure is proposed,the yield strength in the hoop direction of the tubular specimen could be derived.

提出了物理概念清楚、易于理解与掌握、适用于各种材料的换热器液压胀接残余接触压力的图算分析原理，建立了测量管状试样在内压作用下外表面的径向变形曲线和环向屈服强度的方法。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。