非对称/对称轧制AZ31镁合金微观组织研究

材料工程, 2008, (6): 25-28. doi: 10.3969/j.issn.1001-4381.2008.06.007

非对称/对称轧制AZ31镁合金微观组织研究

张文玉 ^1, , 刘先兰 ^2, , 陈振华 ^3, , 夏伟军 ^4,

1.湖南工学院,机械工程系,湖南,衡阳,421002

2.湖南工学院,机械工程系,湖南,衡阳,421002

3.湖南大学,材料科学与工程学院,长沙,410082

4.湖南大学,材料科学与工程学院,长沙,410082

基金项目: 湖南省自然科学基金(07JJ3092) 湖南省社会科学基金(06c031) 湖南省科技计划(2007FJ3095)

关键词：非对称轧制 , 对称轧制 , AZ31镁合金板材 , 微观组织 , 有限元

Microstructure of AZ31 Magnesium Alloy Sheets During Asymmetric/Symmetric Rolling Procedure

研究了非对称轧制和对称轧制过程中,AZ31镁合金板材微观组织的变化特征,并结合有限元模拟对其差异进行了分析.结果表明,非对称轧制可明显细化板材的晶粒,可获得平均晶粒度约为8.9μm均匀分布的等轴晶组织,且其(0002)基面晶粒取向明显减弱;而对称轧制板材晶粒分布不均匀且有大量的孪晶存在,平均晶粒度达13.2μm.这主要是因为,与对称轧制相比,非对称轧制沿板材厚向引入了强烈的剪切应变所致.

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材料期刊网

非对称/对称轧制AZ31镁合金微观组织研究

Microstructure of AZ31 Magnesium Alloy Sheets During Asymmetric/Symmetric Rolling Procedure

参考文献