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首页> 外文期刊>Materials Science and Engineering >Effects of high pressure rheo-squeeze casting on Fe-containing intermetallic compounds and mechanical properties of Al-17Si-2Fe-(0, 0.8)V alloys
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Effects of high pressure rheo-squeeze casting on Fe-containing intermetallic compounds and mechanical properties of Al-17Si-2Fe-(0, 0.8)V alloys

机译：高压流变挤压铸造对含铁金属间化合物和Al-17Si-2Fe-（0，0.8）V合金力学性能的影响

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摘要

The effects of high pressure rheo-squeeze casting (HPRC) on Fe-containing intermetallic compounds (FIMCs) and mechanical properties of Al-17Si-2Fe-(0, 0.8)V alloys were studied. The melt of alloys was treated by ultrasonic vibration (UV), then the melt was formed by high pressure squeeze casting (HPSC). The results show that irregular polygonal AlFeVSi phase is formed when 0.8%V is added into the Al-17Si-2Fe alloy. When the pressure is 0 MPa, the FIMCs in HPSC alloy are coarse plate-like or long needle-like. The coarse FIMCs are fractured as the pressure is increased to 100 MPa. The degree of fragmentation is enhanced with the increase of pressure from 100 MPa to 300 MPa. When the pressure is 0 MPa, the FIMCs in HPRC alloys are refined significantly, and the size of block-like δ phase and short needle-like β phase are decreased furtherly as the increase of pressure. For the alloy with the same composition, the ultimate tensile strength (UTS) of HPRC sample is higher than that of the HPSC sample under the same pressure. The UTS is increased with the increase of the pressure irrespective of whether there is UV or not. With HPSC, the UTS of Al-17Si-2Fe-0.8 V alloy samples is increased by 4.6%, 7.1%, 7.4% and 7.3% respectively compared with that of Al-17Si-2Fe-0V alloy samples under 0, 100, 200 and 300 MPa. With HPRC, the UTS of Al-17Si-2Fe-0.8 V alloy samples is increased by 5.4%, 4.3%, 6.3% and 6.2% respectively compared with that of Al-17Si-2Fe-0V alloy samples under 0, 100, 200 and 300 MPa.
机译：研究了高压流变挤压铸造（HPRC）对含铁金属间化合物（FIMC）和Al-17Si-2Fe-（0，0.8）V合金力学性能的影响。通过超声振动（UV）处理合金熔体，然后通过高压挤压铸造（HPSC）形成熔体。结果表明，在Al-17Si-2Fe合金中添加0.8％V时会形成不规则的多边形AlFeVSi相。当压力为0 MPa时，HPSC合金中的FIMC为粗盘状或长针状。随着压力增加到100 MPa，粗FIMC破裂。随着压力从100 MPa增加到300 MPa，碎裂程度增强。当压力为0 MPa时，HPRC合金中的FIMC细化，随着压力的增加，块状δ相和短针状β相的尺寸进一步减小。对于相同组成的合金，在相同压力下，HPRC样品的极限抗拉强度（UTS）高于HPSC样品的极限抗拉强度。无论是否存在紫外线，UTS都会随着压力的增加而增加。与HP-17Si-2Fe-0V合金样品在0、100、200下相比，使用HPSC可使Al-17Si-2Fe-0.8 V合金样品的UTS分别增加4.6％，7.1％，7.4％和7.3％和300 MPa。使用HPRC，与0、100、200下的Al-17Si-2Fe-0V合金样品相比，Al-17Si-2Fe-0.8 V合金样品的UTS分别增加了5.4％，4.3％，6.3％和6.2％。和300 MPa。

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  • 来源
    《Materials Science and Engineering》 |2018年第24期|105-111|共7页
  • 作者

    Chong Lin; Shusen Wu; Shulin Lue; Ping An; Hebao Wu;

  • 作者单位

    State Key laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China,Hubei Provincial Key Laboratory of Chemical Equipment Intensification and Intrinsic Safety, Wuhan Institute of Technology, Wuhan 430205, PR China;

    State Key laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China;

    State Key laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China;

    State Key laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China;

    Hubei Provincial Key Laboratory of Chemical Equipment Intensification and Intrinsic Safety, Wuhan Institute of Technology, Wuhan 430205, PR China;

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  • 关键词

    High pressure rheo-squeeze casting; Al-17Si-2Fe-(0, 0.8)V alloy; Fe-containing intermetallic compounds; Mechanical properties;

    机译：高压流变挤压铸造;Al-17Si-2Fe-（0;0.8）V合金;含铁金属间化合物;机械性能;

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