Thermomechanical Treatment of 3104 Aluminum Alloy for Improving Strength and Earing Properties

3104알루미늄 합금의 강도향상과 귀발생 억제를 위한 가공열처리법 연구

Two kinds of thermo-mechanical treatments(TMT) were applied to two AA3104 alloys. Tensile test, cupping and mesurement were conducted. Height and angular positions of earings in the drawn cups were explained by ODF on the contents of alloying elements. The tensile strengths measured in RD+45$^{\circ}$direction were generally lower than those measured in RD and TD directions. The textures of the experimental alloys were determined as shear texture {100}<011> and Cube texture {100}<001> by ODF's. Some optimum ratio of shear texture {100}<011> and Cube texture {100}<001> for reducing earings was found.