加热工艺对冷轧6061合金半固态显微组织的影响

发布时间：2018-06-23 22:34

  本文选题：铝合金 + 冷轧　； 参考：《热加工工艺》2017年22期

【摘要】：基于SIMA法,采用冷轧+半固态热处理工艺制备出6061铝合金半固态坯料。研究了半固态加热温度和保温时间对6061铝合金半固态坯料显微组织的影响。结果表明:随半固态加热温度的升高,α-Al固相颗粒的球形率增大,液相率升高;保温时间在0~15 min内,随保温时间的延长,α-Al固相颗粒越圆整、分布越均匀,液相率越高;当保温时间超过15 min后,α-Al固相颗粒尺寸逐渐增大,颗粒有簇聚的趋势,而液相率变化不明显;优化的加热工艺参数为630℃保温15 min,可获得6061铝合金半固态坯料理想的显微组织。
[Abstract]:Based on Sima method, 6061 aluminum alloy semi-solid billets were prepared by cold rolling and semi-solid heat treatment. The effect of semi-solid heating temperature and holding time on microstructure of 6061 aluminum alloy semi-solid billet was studied. The results show that with the increase of semi-solid heating temperature, the spherical rate of 伪 -Al solid particles increases, and the liquid phase ratio increases, and when the holding time is 0 ~ 15 min, the more round 伪 -Al solid particles are, the more uniform the distribution of 伪 -Al solid particles is, and the higher the liquid phase ratio is. When the holding time is more than 15 min, the size of 伪 -Al solid phase particle increases gradually, the grain has the tendency of cluster aggregation, but the liquid phase rate does not change obviously, and the optimum heating process parameter is 630 鈩，

本文编号：2058704