This paper gauges the hardening coefficient and exponent of 16Mn steel in Ramberg-Osgood stress-strain relationship by means of the micro-measurement technology and the computing method of logarithm strain, which are the theoretical basis of calculating the stressand strain fields around the crack tip.
应用显微测量技术及对数应变的计算方法，测出了１６Ｍｎ钢的硬化系数及硬化指数，为该材料裂纹尖端附近应力、应变场的理论计算提供必要的参数。
Calculation of dielectronic recombination rate coefficients of Kα- and Kβ-type decays of Ni~(27+);
Ni~(27+)离子Kα和Kβ型衰变的双电子复合速率系数的计算
Combining ratios of atomic to molecular fluorescence at the Cs density range between 1 and 9×10 15 cm -3 ,the ratios of collisional excitation transfer rate coefficients and the predissociation rates are obtained.
6nm线光解Cs2 分子 ,使Cs(7P ,6D)得到布居 ,在Cs原子密度 1～ 9× 10 1 5cm- 3范围内 ,测量原子荧光对分子荧光的强度比 ,得到了碰撞转移速率系数与预解离率之比。
As an example, we have calculated the rate coefficients of He-like Si ion, and compared with the explicit calculations made by Karim et al.
给出了一套计算类氦等电子数系列离子双电子复合速率系数的解析公式，这套公式能快速、准确地给出类氦离子从Ｂ３＋到Ｘｅ５２＋、电子温度在０。
Photonionization and radiative recombination of Br——Comparison of rate coefficients deduced form the average atom and detailed configuration models;
溴的光电离和辐射复合——平均原子模型速率系数与细致组态速率系数
Using a two-state rate equation model the transfer rate coefficients from Cs(6PJ) had b.
利用速率方程分析,可以得到精细结构碰撞转移速率系数。
6 μm) fluorescence could not be detected with this experiment,the EP rate coefficients have been measured relative to the known rate coefficient of t.
在1016-1017Cs密度范围内,测量了碰撞能量合并5D+5D→nL+6S(nL=9D,11S,7F)速率系数,因5D→6P(3。
The strain hardening rate of g.
研究了粒状贝氏体组织的形变历史、断裂过程与组织内部应力分布关系,结果表明粒状贝氏体组织的主要断裂机制为微孔洞形成、长大和连接,尽管早期的变形历史中就产生了微裂纹,但在随后的形变过程中,由于组织变形微裂纹沿拉伸方向排列,使其不可能成为重要的断裂方式,粒状贝氏体组织在形变过程中应变硬化速率存在一个极小值,在此前后的变形历史和断裂过程中,材料内部的应力分布和微观断裂机制不同。
For the steel containing high content martensite,strain hardening exponent n and strain hardening rate significantly increase in the stage of uniform deformation with the increase of martensite.
利用扫描电子显微镜对不同马氏体含量的试样的断口和断口侧面分析,发现在高马氏体含量下,双相钢变形和断裂与马氏体含量和组织形态有关,且其均匀变形阶段的应变硬化指数n值及应变硬化速率也会随着马氏体含量的增加而显著升高。
