Cladding-rolling for Hypereutectic High Si Aluminum Alloy

Yang Fuliang  Gan Weiping  Chen Zhaoke

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Cladding-rolling for Hypereutectic High Si Aluminum Alloy
Issue 2, Pages: 73-74(2005)
Published： 2005 ，
DOI：

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[1]杨伏良,甘卫平,陈招科.过共晶高硅铝合金的包覆轧制工艺初步研究[J].特种铸造及有色合金,2005(02):73-74+61.

Yang Fuliang Gan Weiping Chen Zhaoke. Cladding-rolling for Hypereutectic High Si Aluminum Alloy. [J]. Special Casting & Nonferrous Alloys (2):73-74(2005)
[1]杨伏良,甘卫平,陈招科.过共晶高硅铝合金的包覆轧制工艺初步研究[J].特种铸造及有色合金,2005(02):73-74+61. DOI：

Yang Fuliang Gan Weiping Chen Zhaoke. Cladding-rolling for Hypereutectic High Si Aluminum Alloy. [J]. Special Casting & Nonferrous Alloys (2):73-74(2005) DOI：

摘要

对熔铸法制备的Si的质量分数大于 2 6%的高硅铝合金锭坯的后续包覆轧制工艺进行了初步研究。采用包覆轧制

对经变质处理后的高硅铝合金进行热轧

采用多道次小变形量的方式

热轧变形量可大于 60 %而不开裂。冷轧后各试样的轧制总变形量可大于 90 %

并借助金相显微镜对该材料各种状态的组织进行了对比分析。结果表明

包覆轧制可有效阻止脆性材料裂纹的扩展

解决脆性材料的加工成形问题

Abstract

Cladding-rolling for high Si aluminum alloy ingot with a Si mass fraction of higher than 26% prepared by smelting-casting technology was conducted.Distortion rate of un-cracked modified high-Si aluminum by hot-rolling with multi-times and minor distortion can be more than 60% while the total distortion can be more than 90% by cold-rolling.The microstructures of the alloy under hot-rolling and cold-rolling conditions were analyzed and compared by the OM.It was found that cladding-rolling can efectively prevent crack propagation so that the forming problem in brittle material can be solved.