Effects of coiling temperature on the microstructures, mechanical properties and textures of 08al deep drawing steel sheet

Abstract

Effects of the coiling temperature on the microstructures and mechanical properties of 08Al hot-rolled steel sheet were investigated. Meanwhile, cold rolling and annealing experimental verifications were performed in the laboratory. The results show that when coiling is carried out at 592°C, the hot-rolled steel sheet exhibits good comprehensive mechanical properties. After cold rolling and annealing treatments, the experimental steel sheet also shows the optimal deep-drawability. The volume fraction of {111}UVW texture component is the highest and the values of {111} UVW{001} 110 and {111}UVW {001}100 are both the largest. However, the strip-like or massive cementites appear in the steel sheet as the coiling temperature is higher than 620°C, which is harmful to the deep-drawability of the experimental steel. Therefore, the coiling temperature should be controlled to be lower than 620°C in the 08Al deep drawing steel sheet.