双层复合管用Al/Mg合金半固态坯料制备及加热研究  

Preparation and Reheating of Al/Mg Alloy Semisolid Billet for Double-layer Tube

作　　者：张鹏[1] 王开坤[1,2] 杜艳梅[1] 徐峰[1] 马春梅[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]清华大学机械工程学院,北京100084

出　　处：《热加工工艺》2009年第1期43-46,共4页Hot Working Technology

基　　金：北京市自然科学基金(2072012);国家863项目(2007-AA03Z119)

摘　　要：金属半固态成形技术因具有许多突出优势而被广泛研究。作为金属半固态成形技术的延伸和发展,触变挤压成形双层复合管具有重要的价值和意义,其中环状和棒状坯料制备和二次加热是触变挤压成形双层复合管的关键技术。因A356铝合金和AZ91镁合金的半固态成形技术研究相对比较成熟,所以选用这两种材料作为双层管的外层和内层材料。本研究首先利用专门设计制造的制坯模制备了一系列不同尺寸的半固态棒状坯料和环状坯料,然后利用电阻炉对制备的棒状坯料和环状坯料进行二次加热,探讨半固态棒状坯料和环状坯料的加热规律。Semi-solid forming is studied widely because of its outstanding advantages. As the extension and development of semi-solid forming,the thixo-co-extrusion of double-layer tube has important value and significance,in which the preparation of ring-shaped and column-shaped billets and their reheating are key technologies in thixo-co-extrusion of double-layer tube. A356 aluminum alloy and AZ91 magnesium alloy were selected as research materials for its relative mature study in semi-solid forming. During research...

关 键 词：A356铝合金 AZ91镁合金 触变挤压成形 棒状坯料和环状坯料 双层复合管 二次加热 

分 类 号：TG249.9[金属学及工艺—铸造]