【摘要】 对铅黄铜的超塑性及有关问题进行了研究。其总延伸率（δＦ）为８５～２２３．３％。ｍ—δ曲线属ｍＬ＝ｍｍａｘ型，呈三种形式（基本形式，上升式及下降式）．应用ＣＬ（刘勤）方程式对各式曲线进行了计算，获得了全部有关特征参数．证实了作为每条曲线的特征参数之一的总延伸率（δＦ）由该曲线的其余参数的综合效果所决定。对有关微观变化进行了研究。更多还原

【Abstract】 The superplasticity of HPb59-1 brass have been studied. The total elongationδobtained were 85-332.2%.The superplastic curves were of the fundamental,the ascending and the descending types with mL=mmax.By using the CL equation,the characteristic parameters of those curves have been obtained.It has been proved that the total elongationδ,as one of the characteristic parameters of a curve should be determined by the resultant effects of all other characteristic parameters of that curve. The related microstructure changes have been studied.更多还原