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Microstructure and mechanical properties of TC4 alloy modified and reinforced by TiB+TiN/Ti inoculants ribbons

机译:TiB + TiN / Ti孕育带改性和增强的TC4合金的组织和力学性能

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摘要

Vacuum rapid solidification technique was utilized to prepare TiB+TiN/Ti inoculants ribbons, which were added to TC4 alloy melt to get refined titanium matrix composites (TMCs). For comparing and analyzing the influence of inoculants, authors mainly studied microstructure and mechanical properties of TC4 alloy modified and reinforced by TiB+TiN/Ti inoculants ribbons prepared by in situ reaction. The in situ reaction are: (1) 3Ti+2BN→TiB_2+2TiN, (2) Ti+TiB_2→2TiB. Microstructure and morphology observation showed that the grain size of TMCs was refined as the volume fraction of reinforcements increased. It is worth noticing that the reinforcements in the TMCs prepared by inoculating method tend to distributed in matrix homogeneously. The tensile test results showed that the tensile strength of TMCs increased significantly by inoculating. Inoculating method showed advantages to preparing by in situ reaction directly. The hardness and wear-resisting property of TMCs were also investigated and found to be promoted as reinforcements content increased.
机译:利用真空快速凝固技术制备TiB + TiN / Ti孕育带,将其加入TC4合金熔体中,得到精炼的钛基复合材料(TMC)。为了比较和分析孕育剂的影响,作者主要研究了通过原位反应制备的TiB + TiN / Ti孕育剂带改性和增强的TC4合金的组织和力学性能。原位反应为:(1)3Ti + 2BN→TiB_2 + 2TiN,(2)Ti + TiB_2→2TiB。显微组织和形态观察表明,随着增强材料体积分数的增加,TMC的晶粒细化。值得注意的是,通过接种方法制备的TMC中的增强材料倾向于均匀地分布在基体中。拉伸试验结果表明,通过接种,TMC的拉伸强度显着提高。接种方法显示了直接通过原位反应制备的优点。还研究了TMC的硬度和耐磨性,发现随着增强剂含量的增加,TMC的硬度和耐磨性得到提高。

著录项

  • 来源
    《Materials Science and Engineering》 |2016年第29期|8-16|共9页
  • 作者单位

    Key Lab. for New Type of Functional Materials in Hebei Province, School of Materials Science and Engineering. Hebei University of Technology, No. 8, Road No.1, Dingzigu, Hongqiao District, Tianjin 300130, China;

    Key Lab. for New Type of Functional Materials in Hebei Province, School of Materials Science and Engineering. Hebei University of Technology, No. 8, Road No.1, Dingzigu, Hongqiao District, Tianjin 300130, China;

    Key Lab. for New Type of Functional Materials in Hebei Province, School of Materials Science and Engineering. Hebei University of Technology, No. 8, Road No.1, Dingzigu, Hongqiao District, Tianjin 300130, China;

    Key Lab. for New Type of Functional Materials in Hebei Province, School of Materials Science and Engineering. Hebei University of Technology, No. 8, Road No.1, Dingzigu, Hongqiao District, Tianjin 300130, China;

    Key Lab. for New Type of Functional Materials in Hebei Province, School of Materials Science and Engineering. Hebei University of Technology, No. 8, Road No.1, Dingzigu, Hongqiao District, Tianjin 300130, China;

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

    Rapid solidification; Electron microscopy; Titanium alloy; Grain refinement; Mechanical characterization;

    机译:快速凝固;电子显微镜;钛合金晶粒细化;机械特性;

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