Cause Analysis of Quenching Crack of 2A12 Shell
Author of the article:YI Nan;YAN Yangyang
Author's Workplace：Department of Material Engineering,Shaanxi Polytechnic Institute,Xianyang 712000,China
Key Words：2A12 shell quenching and aging overburnt structure
Abstract：
The cracks of shell 2A12 during solid solution treatment were analyzed by means of macro inspection and micro inspection.The results show that a large number of remelting balls,triangular grain boundary and grain boundary melting in the microstructure are serious overfiring characteristics of shell during solid solution treatment,and are also the main causes of shell cracking and put forward improvement measure.
