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搅拌摩擦加工技术制备Ti颗粒增强AZ31镁基复合材料

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Indexed by:期刊论文

Date of Publication:2009-03-15

Journal:中国有色金属学报

Included Journals:EI、PKU、ISTIC、CSCD、Scopus

Volume:19

Issue:3

Page Number:418-423

ISSN No.:1004-0609

Key Words:镁合金;复合材料;搅拌摩擦加工;Ti颗粒

Abstract:利用搅拌摩擦加工技术制备Ti颗粒含量为20%(体积分数,下同)与40%的Mg-AZ31基复合材料.结果表明:碎化后的Ti颗粒平均尺寸约为200 nm,经4次搅拌摩擦加工处理后基体组纵发生明显的细化,晶粒尺寸为3~5 μm.添加20%Ti颗粒的复合层中碎化的Ti颗粒在Mg基体中呈不均匀分布,复合层具有较低的强度和伸长率;当Ti颗粒添加量为40%时,复合层中碎化Ti颗粒在Mg基体中均匀分布,复合层强度有明显提高,伸长率较基体无明显降低.利用混合定律计算复合层的显微硬度,其结果与试验值相吻合.

Pre One:Texture and microstructure evolution in cold rolled AZ31 magnesium alloy

Next One:Improvement of ductility in Mg-AZ31 alloy sheet fabricated by asymmetric hot extrosion