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Crystallization and carbonization of an electrical discharge machined Zr-based bulk metallic glass alloy

机译:放电加工的Zr基块状金属玻璃合金的结晶和碳化

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摘要

This study investigated the microstructure and machining characteristics of a Zr_(38.5)Ti_(16.5)Cu_(15.25)Ni_(9.75)Be_(20) bulk metallic glass (Zr-BMG) alloy machined using electro-discharge machining (EDM). After EDM, the hardening effect near the outer surface of the electro-discharge machined (EDMed) Zr-BMG alloy originated from the surface carbides of the recast layer, ZrC and TiC. The thickness of the recast layer, crater size, and the surface roughness increased with greater pulse energy. Furthermore, the EDM can generate a porous recast layer and convert the Zr-BMG alloy surface into a carbide surface, which is a potential method to fabricate biomaterials. Experimental results also show that the material removal rate of this alloy in the EDM process was significantly related to the pulse current I_p and pulse duration I_p Many electro-discharge craters and recast materials were observed on the surface of the EDMed Zr-BMG alloy. The surface roughness of the EDMed Zr-BMG alloy was found to obey the empirical equation of R_α = β(I_P × τ_P)~α.
机译:本研究研究了用放电加工(EDM)加工的Zr_(38.5)Ti_(16.5)Cu_(15.25)Ni_(9.75)Be_(20)大块金属玻璃(Zr-BMG)合金的组织和加工特性。进行电火花加工后,电火花加工(EDMed)Zr-BMG合金外表面附近的硬化作用源自重铸层的表面碳化物ZrC和TiC。重铸层的厚度,弹坑尺寸和表面粗糙度随着脉冲能量的增加而增加。此外,EDM可以产生多孔重铸层,并将Zr-BMG合金表面转化为碳化物表面,这是制造生物材料的潜在方法。实验结果还表明,该合金在EDM工艺中的材料去除率与脉冲电流I_p和脉冲持续时间I_p显着相关。在EDMed Zr-BMG合金的表面上观察到许多放电坑和重铸材料。发现电火花加工Zr-BMG合金的表面粗糙度符合R_α=β(I_P×τ_P)〜α的经验方程。

著录项

  • 来源
    《Journal of Materials Research》 |2013年第22期|3177-3184|共8页
  • 作者单位

    Department of Mold and Die Engineering, National Kaohsiung University of Applied Sciences,Kaohsiung 807, Taiwan and Research Center for Biomedical Devices and Prototyping Production, Taipei Medical University, Taipei 110, Taiwan;

    Department of Mechanical Engineering, National Kaohsiung University of Applied Sciences,Kaohsiung 807, Taiwan;

    Department of Mechanical Engineering, National Kaohsiung University of Applied Sciences,Kaohsiung 807, Taiwan;

    Department of Mold and Die Engineering, National Kaohsiung University of Applied Sciences,Kaohsiung 807, Taiwan and Research Center for Biomedical Devices and Prototyping Production,Taipei Medical University, Taipei 110, Taiwan;

    Department of Mechanical Engineering, National Kaohsiung University of Applied Sciences,Kaohsiung 807, Taiwan;

    Research Center for Biomedical Devices and Prototyping Production, Taipei Medical University, Taipei 110,Taiwan School of Oral Hygiene, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan and Department of Dentistry, Taipei Medical University-Shuang Ho Hospital, Taipei 235, Taiwan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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