论文部分内容阅读
作者对超塑性Zn-22%Al锌铝共析合金进行小变形和大变形拉伸,用以确定超塑性变形中晶界滑动的贡献值。用扫描电子显微镜测量试件表面上刻痕的滑动位移量,经计算后,可认为在35%的小延伸率与从200%到235%的大延伸率拉伸条件下,两者对晶界滑动的贡献值是相近的。文中还指出,在锌铝两相合金中,不同界面上的晶界滑动量是不相同的:最大滑动量出现在Zn-Zn界面,最小的在Al-Al界面,而在Zn-Al界面上,滑动量介于两者之间。
The author of the superplastic Zn-22% Al-Zn-Al eutectoid small deformation and large deformation drawing, to determine the superplastic deformation in the grain boundary sliding contribution. The sliding displacement of the notch on the surface of the test piece was measured by a scanning electron microscope. After calculation, it can be considered that under the conditions of a small elongation of 35% and a high elongation of 200% to 235% The contribution of sliding is similar. The paper also points out that in the zinc-aluminum two-phase alloys, the amount of grain boundary slip varies at different interfaces: the maximum amount of slip appears at the Zn-Zn interface, the smallest at the Al-Al interface and the Zn-Al interface , The amount of sliding between the two.