Evaluation of Residual Stress Distribution and Relaxation on In Situ TiB₂/7050 Al Composites.

ABSTRACT: Interior residual stresses induced by quenching may cause distortion during subsequent machining processes. Hence, various strategies have been employed to relieve the interior residual stress, such as stretching, post treatment, and other techniques. In this study, the stress distribution inside TiB₂/7050 Al composite extrusions was investigated and the effects of different methods on relieving the quenching-induced stress were compared. Firstly, three TiB₂/7050 Al composite extrusions were treated by stretching, stretching and heat treatment, and stretching and cold treatment processes, respectively. Then, the multiple-cut contour method was employed to assess the residual stresses in the three workpieces. Experimental results indicate that the interior stress of TiB₂/7050 Al composite e

SUBMITTER: Lin K 

PROVIDER: S-EPMC5978083 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature