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首页> 外文期刊>Journal of Materials Research >Nano-sized TiN-reinforced composites: Fabrication, microstructure, and mechanical properties
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Nano-sized TiN-reinforced composites: Fabrication, microstructure, and mechanical properties

机译：纳米TiN增强复合材料：制备，微观结构和机械性能

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摘要

Nano- sized TiN- reinforced Ti metal matrix composites were fabricated by powder metallurgical route, which includes high- energy ball milling pretreatment and subsequent hot- press sintering treatment. The phase composition and microstructure of the sintered samples were characterized by X- ray diffraction, scanning electron microscopy, and transmission electron microscopy. Results showed that N2 was absorbed and solubilized into TiH2 by milling pretreatment, and TiN was formed during sintering process and was fine to a grain size of 20- 100 nm. The final phase composition of the composites was aTi, bTi, and TiN with solution N in matrix. Mechanical tests showed that with increasing milling time, the hardness of the composites increased by 31, 58, 93, and 101% compared with pure Ti. The compressive strength initially increased and later decreased to 2440 and 2120 MPa when milled for 1.5 and 2 h, respectively.
机译：纳米TiN增强的Ti金属基复合材料是通过粉末冶金工艺制造的，包括高能球磨预处理和随后的热压烧结处理。通过X射线衍射，扫描电子显微镜和透射电子显微镜表征了烧结样品的相组成和微观结构。结果表明，通过研磨预处理，N2被吸收并溶解为TiH2，并且在烧结过程中形成了TiN，其细度为20-100 nm。复合材料的最终相组成是在基质中具有溶液N的aTi，bTi和TiN。机械测试表明，随着研磨时间的增加，复合材料的硬度与纯Ti相比增加了31％，58％，93％和101％。碾磨1.5 h和2 h时，抗压强度最初增加，后来降低至2440和2120 MPa。

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  • 来源
    《Journal of Materials Research》 |2019年第15期|2582-2589|共8页
  • 作者

    Li Chunxin; Lv Xuewei; Wu Xiaolong; Chen Jie; Liu Xuyang; Pang Lijuan;

  • 作者单位

    Chongqing Univ, Sch Mat Sci & Engn, Chongqing 400044, Peoples R China;

    Chongqing Univ, Sch Mat Sci & Engn, Chongqing 400044, Peoples R China;

    Chongqing Univ, Sch Mat Sci & Engn, Chongqing 400044, Peoples R China;

    Chongqing Univ, Sch Mat Sci & Engn, Chongqing 400044, Peoples R China;

    Chongqing Univ, Sch Mat Sci & Engn, Chongqing 400044, Peoples R China;

    Chongqing Univ, Sch Mat Sci & Engn, Chongqing 400044, Peoples R China|Panzhihua Univ, Coll Vanadium & Titanium, Panzhihua 617000, Sichuan, Peoples R China;

  • 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
  • 中图分类
  • 关键词

    TiN; composites; ball-milling; sintering; microstructures; mechanical properties;

    机译：锡;复合材料;球磨;烧结;微观结构;机械性能;

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