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首页> 外文期刊>Materials Science and Engineering >Microstructure and mechanical properties of an Al-12.7Si-0.7Mg alloy processed by extrusion and heat treatment
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Microstructure and mechanical properties of an Al-12.7Si-0.7Mg alloy processed by extrusion and heat treatment

机译：挤压和热处理Al-12.7Si-0.7Mg合金的组织和力学性能

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摘要

Direct chill (DC) cast Al-12.7Si-0.7Mg alloy without chemical modification was hot extruded and subsequently heat-treated under various conditions. The microstructure and tensile properties of the extruded profile were investigated aiming at understanding the strengthening mechanisms. The results show that the refined microstructure characterized by fine Si particles uniformly distributed in the Al matrix of fine equiaxed grains was promoted by hot extrusion. The alloy after T6 treatment exhibits good ductility and much higher proof strength as well as tensile strength compared to 6063 alloy in general. The strengthening was attributed to be the combining effect of particle, grain boundary and precipitation strengthening.
机译：将未经化学改性的直接激冷（DC）铸造Al-12.7Si-0.7Mg合金进行热挤压，然后在各种条件下进行热处理。为了了解增强机理，对挤压型材的微观结构和拉伸性能进行了研究。结果表明，通过热挤压促进了细小的等轴晶晶粒的Al基体中均匀分布的细Si颗粒特征的细化组织。与6063合金相比，经过T6处理的合金具有良好的延展性和更高的屈服强度以及拉伸强度。该强化归因于颗粒，晶界和沉淀强化的综合作用。

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  • 来源
    《Materials Science and Engineering》 |2011年第11期|p.3786-3790|共5页
  • 作者

    Liu Fang; Yu Fuxiao; ZhaoDazhi; ZuoLiang;

  • 作者单位

    Key Lab.forAnisotropy and Texture of Materials (Ministry of Education) Northeastern University, Shenyang 110819, People's Republic of China;

    College of Materials and Metallurgy, Northeastern University, Shenyang 110819, People's Republic of China;

    College of Materials and Metallurgy, Northeastern University, Shenyang 110819, People's Republic of China;

    Key Lab.forAnisotropy and Texture of Materials (Ministry of Education) Northeastern University, Shenyang 110819, People's Republic of China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    al-si alloy; dc cast; extrusion; microstructure; tensile properties;

    机译：铝硅合金直流铸造;挤压;微观结构拉伸性能;

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