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Effects of aluminum on microstructure and compressive properties of Al-Cr-Fe-Ni eutectic multi-component alloys

机译:铝对Al-Cr-Fe-Ni共晶多组分合金组织和压缩性能的影响

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摘要

Al_xCrFeNi eutectic multi-component alloys were prepared to obtain excellent mechanical properties by double-phase strengthening. The X-ray diffraction results showed that the crystal structure were both body-centered cubic and energy-dispersive X-ray spectrometer identified that the two phases are ordered NiAl intermetallic and disordered [Fe, Cr] solid solution. The formation of eutectic structures was introduced by a simplified dynamic model. After mechanical tests, the alloys presented excellent compressive strength and unexpected large deformation. Due to the solid solution and fine-grain strengthening resulted by Al addition, mechanical properties of Al_xCrFeNi alloys exhibited regularity in some degree. Among all alloys, Al_(1.3)CrFeNi has the highest fracture strength and Al_(0.9)CrFeNi has the most excellent strain. Besides, Al_(1.2)CrFeNi alloy showed a good combination of strength and ductility.
机译:通过双相强化制备Al_xCrFeNi共晶多组分合金以获得优异的机械性能。 X射线衍射结果表明,晶体结构均为体心立方晶体,能量色散X射线光谱仪鉴定出两相是有序的NiAl金属间化合物和无序的[Fe,Cr]固溶体。通过简化的动力学模型介绍了共晶结构的形成。经过机械测试,这些合金具有出色的抗压强度和意外的大变形。由于固溶和Al添加引起的细晶粒强化,Al_xCrFeNi合金的力学性能在一定程度上表现出规律性。在所有合金中,Al_(1.3)CrFeNi的断裂强度最高,而Al_(0.9)CrFeNi的应变最高。此外,Al_(1.2)CrFeNi合金具有良好的强度和延展性。

著录项

  • 来源
    《Materials Science and Engineering》 |2017年第10期|25-31|共7页
  • 作者单位

    School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China;

    School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China;

    School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China;

    School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China;

    School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China;

    School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China;

    School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    High entropy alloy; Eutectic phase; Microstructure; Mechanical property;

    机译:高熵合金;共晶相;微观结构机械性能;

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