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首页> 外文期刊>Materials science forum >Phase Transformation in Mechanically Alloyed and Hot-Pressed Ti-2Nb-22Si-11B and Ti-6Nb-22Si-11B Powder Mixtures
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Phase Transformation in Mechanically Alloyed and Hot-Pressed Ti-2Nb-22Si-11B and Ti-6Nb-22Si-11B Powder Mixtures

机译:机械合金化和热压Ti-2Nb-22Si-11B和Ti-6Nb-22Si-11B粉末混合物中的相变

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摘要

This work aims to discuss on the phase transformation in mechanically alloyed and hot-pressed Ti-2Nb-22Si-11B and Ti-6Nb-22Si-11B powder mixtures. The milling process was conducted in a planetary ball milling using stainless steel vials (225 mL) and balls (19 mm diameter), rotary speed of 300 rpm, and a ball-to-powder weight ratio of 10:1. Hot pressing of mechanically alloyed Ti-Nb-Si-B powders was performed under vacuum at 1100℃ for 1h. The as-milled and hot-pressed Ti-Nb-Si-B samples were evaluated by X-ray diffraction, scanning electron microscopy, and energy dispersive spectrometry. XRD results of milled Ti-Nb-Si-B powders indicated that the peaks of Nb and Si were reduced for longer milling times, suggesting that Nb and Si atoms were dissolved into the Ti lattice to form extended solid solutions. Iron contamination close to 6 at% was detected by EDS analysis. Hot pressing produced dense and homogeneous samples containing a small amount of Ti_6Si_2B.
机译:这项工作旨在讨论机械合金化和热压的Ti-2Nb-22Si-11B和Ti-6Nb-22Si-11B粉末混合物中的相变。研磨过程是在行星式球磨机中进行的,使用的是不锈钢小瓶(225 mL)和球(直径为19 mm),转速为300 rpm,球粉重量比为10:1。机械合金化的Ti-Nb-Si-B粉末在真空中于1100℃热压1h。通过X射线衍射,扫描电子显微镜和能量色散光谱法评估已研磨和热压的Ti-Nb-Si-B样品。研磨后的Ti-Nb-Si-B粉末的XRD结果表明,随着研磨时间的延长,Nb和Si的峰减少,这表明Nb和Si原子溶解在Ti晶格中形成扩展的固溶体。通过EDS分析检测到铁污染接近6at%。热压产生含有少量Ti_6Si_2B的致密均匀的样品。

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  • 来源
    《Materials science forum》 |2014年第2014期|9-13|共5页
  • 作者单位

    Universidade Estadual Paulista Julio de Mesquita Filho, Departamento de Materials e Tecnologia, Campus de Guaratingueta, Avenida Ariberto Pereira da Cunha, 333, Guaratingueta-SP, 12516-410, Brazil;

    Universidade Estadual Paulista Julio de Mesquita Filho, Departamento de Materials e Tecnologia, Campus de Guaratingueta, Avenida Ariberto Pereira da Cunha, 333, Guaratingueta-SP, 12516-410, Brazil;

    Universidade Federal de Alfenas, Instituto de Ciencia e Tecnologia, Campus de Pocos de Caldas, Rod. Jose Aurelio Vilela, 11999, Pocos de Caldas-MG, 37715-400, Brazil;

    Universidade Federal de Alfenas, Instituto de Ciencia e Tecnologia, Campus de Pocos de Caldas, Rod. Jose Aurelio Vilela, 11999, Pocos de Caldas-MG, 37715-400, Brazil;

    Universidade Federal de Alfenas, Instituto de Ciencia e Tecnologia, Campus de Pocos de Caldas, Rod. Jose Aurelio Vilela, 11999, Pocos de Caldas-MG, 37715-400, Brazil;

    Universidade Estadual Paulista Julio de Mesquita Filho, Departamento de Materials e Tecnologia, Campus de Guaratingueta, Avenida Ariberto Pereira da Cunha, 333, Guaratingueta-SP, 12516-410, Brazil;

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

    titanium alloy; mechanical alloying; phase transformation;

    机译:钛合金机械合金化;相变;

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