退火温度对铁素体不锈钢组织织构和深冲性的影响

Effect of annealing temperature on microstructure, texture and drawability of ferritic stainless steel

详细研究了冷轧退火温度对铁素体不锈钢微观组织、织构、深冲性能的影响。随着退火温度的增加,晶粒尺寸逐渐增大,温度在850℃时为26μm,当温度升高到1 000℃时增加到48μm,退火温度进一步增加到1 050℃时,晶粒长大的趋势更加明显。不同温度退火后,薄板的再结晶织构都是由强烈的γ织构和较弱的α织构组成,并且随着退火温度的提高,γ织构的强度也在不断增长,当退火温度为1 050℃时,发现了少量的高斯织构。平均r值在退火温度为950℃时达到了峰值。

The effect of annealing temperature after cold rolling on the microstructure, texture and drawability of ferritic stainless steel was investigated in detail. The grain size increased substantially with the increase of annealing temperature, from 26 μm at 850℃ to 48 μm at 1 000℃. With further increase of annealing temperature （ to 1 050℃ ）, the trend of grain growth was more evident, which illustrated the grain size sensitivity. After being annealed at different temperatures, all sheets were dominated by the γ-fiber texture with a very weak or-fiber texture. The intensity of the T-fiber texture increased with the increase of annealing temperature. A few Goss texture tl 10t 〈001 〉 were found when the annealing temperature increased to 1 050℃. The average r-value showed a peak at the annealing temperature of 950℃.