Grain-boundary sliding and intergranular cavitation during superplastic deformation of α/β brass
Grain-boundary sliding and intergranular cavitation during superplastic deformation of α/β brass
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α/β黄铜超塑性变形过程中的晶界滑动和晶间空化
DOI：
10.1007/bf00808052
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发表时间：
1978
影响因子：
4.5
通讯作者：
D. Taplin
中科院分区：
文献类型：
--
作者：
T. Chandra;J. Jonas;D. Taplin
本文研究了二元α/β黄铜在600° C超塑性变形条件下的晶间和相间空蚀现象。用定量金相法研究了空洞的形核位置，观察到空洞优先在α-β界面形核。空蚀过程与晶界滑动有关，空蚀形核发生在滑动界面的应力集中点。对不同界面处晶界和相界滑动的测量表明，α-β界面比α-α和β-gb界面更容易发生滑动。α-β界面空化的优势被认为是由于α-β边界处的较大滑动以及邻近该类型边界的滑动的不平衡调节的结果。
Intergranular and interphase cavitation in binary alpha/beta brass has been investigated in tension at 600° C under conditions of superplastic deformation. The sites for nucleation of cavities has been studied by quantitative metallography and the cavities are observed to nucleate preferentially atα-β interfaces. The process of cavitation is associated with grain boundary sliding and cavity nucleation occurs at points of stress concentrations in the sliding interfaces. Measurements of grain and phase boundary sliding at various interfaces demonstrate that sliding occurred onα-β boundaries more readily than onα-α andβ-gb interfaces. The predominance ofα-β interface cavitation is believed to be as a result of greater sliding at theα-β boundary and of an unbalanced accommodation of sliding adjacent to this type of boundary.