Several 2A12 aluminum alloy forging stocks were found to have fractured in the production process.
In this article, morphological observation and fraction analysis were employed to investigate the reason why cracking
phenomenon happened. In addition, the article studied comparatively the cracking forging stock with heat treatment,
the forging stock without heat treatment and the aluminum bar. The results indicated that the fracture mode of the forging
stock belong to brittle fracture, and the crack formed in the heat treatment process and related to the coarse-grain
generated in the treatment process due to the improper forging process.