东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2009, Vol. 30 ›› Issue (6): 825-828.DOI: -

• 论著 • 上一篇    下一篇

双辊铸轧镁合金薄带冷轧实验研究

王广山;邸洪双;黄锋;   

  1. 东北大学轧制技术及连轧自动化国家重点实验室;
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2009-06-15 发布日期:2013-06-22
  • 通讯作者: Wang, G.-S.
  • 作者简介:-
  • 基金资助:
    国家重点基础研究发展计划项目(2006CB605208-1);;

On the cold rolling of twin-roll casting magnesium alloy strip

Wang, Guang-Shan (1); Di, Hong-Shuang (1); Huang, Feng (1)   

  1. (1) The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2009-06-15 Published:2013-06-22
  • Contact: Wang, G.-S.
  • About author:-
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摘要： 采用AZ31镁合金铸锭在实验室立式等径双辊铸轧机上进行铸轧试验;对铸轧带坯直接进行冷轧和冷轧后退火处理.研究了AZ31镁合金薄带立式双辊铸轧工艺及铸轧带坯进行冷轧、轧后退火过程的组织演变行为.采用合理的工艺参数,成功铸轧出镁合金薄带,同时由于双辊铸轧快速冷却和压力下凝固成形技术特点,改善了镁合金的凝固组织.对铸轧镁合金带坯直接进行冷轧,最大变形量可以达到40.7%.经过冷轧后的镁合金板材,在350℃下退火30~60 min,可以获得平均晶粒直径为9~10μm的等轴晶细晶组织.

关键词: 双辊铸轧, AZ31镁合金, 显微组织, 冷轧, 平均晶粒直径

Abstract: An experiment was carried out in lab on vertical twin-roll casting machine with magnesium alloy AZ31 ingots as workpiece which were cold rolled to form strip then annealed directly. The parameters in the processes of vertical twin-roll cast-rolling and annealing, and the microstructure evolution of the finished cold strip were investigated. The results showed that the magnesium alloy strip is obtained successfully due to reasonable process parameters, especially in the twin-roll cast-rolling process both the quick chilling and pressured solidification improve the solidified structure of the strip of which the maximum deformation can be up to 40.7% if the magnesium alloy billet is cold-rolled directly. For the cold-rolled Mg alloy plate after annealing at 350°C for 30-60 min, the equiaxed fine grain structure with average grain size 9-10μm is available.

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