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Phase separation and significant plastic strain in a Zr-Cu-Ni-Al-Fe bulk metallic glass

机译:Zr-Cu-Ni-Al-Fe大块金属玻璃的相分离和明显的塑性应变

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摘要

In this study, we reported a phase-separated Zr_(62)Cu_(18)Ni_(10.4)Al_8Fe_(1.6) bulk metallic glass exhibiting a significant plastic strain at room-temperature. The engineering plastic strain, fracture strength and Young's modulus were determined to be about 32.6%, 2919 MPa and 90 GPa respectively. The enhanced ductility was explained from the view point of elastic energy dissipation, separation length and shear modulus difference between separated phases. This result provides a promising approach to improve the mechanical properties of bulk metallic glasses through compositional and structural design by micro-alloying.
机译:在这项研究中,我们报告了相分离的Zr_(62)Cu_(18)Ni_(10.4)Al_8Fe_(1.6)大块金属玻璃在室温下表现出显着的塑性应变。测定的工程塑性应变,断裂强度和杨氏模量分别为约32.6%,2919 MPa和90 GPa。从弹性能量耗散,分离长度和分离相之间的剪切模量差的角度解释了增强的延展性。该结果提供了一种通过微合金化进行成分和结构设计来改善大块金属玻璃的机械性能的有前途的方法。

著录项

  • 来源
    《Materials Science and Engineering》 |2016年第22期|84-89|共6页
  • 作者单位

    Shenzhen Key Laboratory of Special Functional Materials & Shenzhen Engineering Laboratory for Advance Technology of Ceramics, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China,Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China;

    Shenzhen Key Laboratory of Special Functional Materials & Shenzhen Engineering Laboratory for Advance Technology of Ceramics, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China;

    Shenzhen Key Laboratory of Special Functional Materials & Shenzhen Engineering Laboratory for Advance Technology of Ceramics, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China;

    Shenzhen Key Laboratory of Special Functional Materials & Shenzhen Engineering Laboratory for Advance Technology of Ceramics, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China;

    Shenzhen Key Laboratory of Special Functional Materials & Shenzhen Engineering Laboratory for Advance Technology of Ceramics, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China;

    Shenzhen Key Laboratory of Special Functional Materials & Shenzhen Engineering Laboratory for Advance Technology of Ceramics, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China;

    Shenzhen Key Laboratory of Special Functional Materials & Shenzhen Engineering Laboratory for Advance Technology of Ceramics, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China;

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

    Bulk metallic glasses; Phase separation; Energy dissipation; Shear bands; Shear modulus; Microstructure;

    机译:大块金属玻璃;相分离;能量耗散;剪切带;剪切模量;微观结构;

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