EFFECTS OF COLD ROLLING DEFORMING DEGREE ON THE TEXTURES OF AN EXTRA LOW-CARBON AND HIGH STRENGTH BAKE-HARDENING SHEET STEEL

摘要

Under the conditions of different total compressive radio, the same thickness of annealed sheet and hot rolling reduction, effects of cold rolling deforming degree on cold rolling and annealing texture of an extra low-carbon and high strength bake-hardening sheet steel developed in our laboratory have been investigated by means of ODF method. Investigating results show that effects of increasing cold rolling reduction on cold rolling and annealing texture are different within definite range of the reduction. The main characteristics of cold rolling texture do not basically change, but orientation density of every component generally increases, particularly {HKL}<110> ones. In annealing gamma -fiber axis texture, the densities of {111}<121> and their near components increase, while that of {111}<110> and their adjacent ones decrease. And in alpha -fiber axis texture, the densities of {223}<110> and its near components remarkably decrease, while that of {114}<110> and its adjacent ones inversely vary.