Ti3SiC2含量对热处理态(Ti5Si3+TiC)/TC4复合材料组织及力学性能的影响

王芝萍 1; 高义民 1; 黄孝余 1; 2; 赵四勇 3

doi:10.7652/xjtuxb202007023

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Ti₃SiC₂含量对热处理态(Ti₅Si₃+TiC)/TC4复合材料组织及力学性能的影响

更新时间：2025-07-09

- Ti₃SiC₂含量对热处理态(Ti₅Si₃+TiC)/TC4复合材料组织及力学性能的影响
- Effects of Ti₃SiC₂ Content on the Microstructure and Properties of Heat Treated(Ti₅Si₃+TiC)/TC4 Composites
- 西安交通大学学报 2020年54卷第7期页码：196-204
- 作者机构：
  
  1. 西安交通大学金属材料强度国家重点实验室,西安,710049
  2. 西安交通大学铸造及耐磨材料研究所,西安,710049
- 作者简介：
- 基金信息：
  
  : 2019-12-30。作者简介: 王芝萍(1993—),女,硕士生;高义民(通信作者),男,教授,博士生导师。基金项目: 广东省重点领域研发计划资助项目(2019B010942001);广西创新驱动发展专项资金资助项目(桂科AA18242001);广东省科技计划资助项目(2015B010122003)
- DOI：10.7652/xjtuxb202007023
  中图分类号： TG166
- 网络首发：2020-07-10，
  
  纸质出版：2020
- 稿件说明：
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王芝萍 1, 高义民 1, 黄孝余 1, 等. Ti₃SiC₂含量对热处理态(Ti₅Si₃+TiC)/TC4复合材料组织及力学性能的影响[J]. 西安交通大学学报, 2020,54(7):196-204. DOI: 10.7652/xjtuxb202007023.

Effects of Ti₃SiC₂ Content on the Microstructure and Properties of Heat Treated(Ti₅Si₃+TiC)/TC4 Composites[J]. 2020, 54(7): 196-204. DOI: 10.7652/xjtuxb202007023.
王芝萍 1, 高义民 1, 黄孝余 1, 等. Ti₃SiC₂含量对热处理态(Ti₅Si₃+TiC)/TC4复合材料组织及力学性能的影响[J]. 西安交通大学学报, 2020,54(7):196-204. DOI: 10.7652/xjtuxb202007023. DOI：

Effects of Ti₃SiC₂ Content on the Microstructure and Properties of Heat Treated(Ti₅Si₃+TiC)/TC4 Composites[J]. 2020, 54(7): 196-204. DOI: 10.7652/xjtuxb202007023. DOI：

摘要

针对钛基复合材料中增强相易团聚的问题

采用固溶加时效的热处理工艺对其组织进行优化

研究了Ti

SiC

含量对材料微观组织及力学性能的影响。通过扫描电子显微镜和能谱分析仪观测了不同Ti

SiC

含量的复合材料的微观组织形貌

并探究热处理过程中基体组织的细化机制与增强相的析出规律

进而分析了室温力学性能的变化规律。实验结果表明:随着Ti

SiC

含量的增加

固溶处理后的原始晶粒尺寸大幅度减小

时效处理后的片状α相和团簇组织的平均尺寸也呈递减趋势; Ti

颗粒在β相内、α/β相界处和α相内均有析出

其含量随Ti

SiC

质量分数增加而递增;(Ti

+TiC)/TC4复合材料的屈服强度和抗压强度均明显高于相同热处理条件下的基体TC4合金

当Ti

SiC

的质量分数为8%时

复合材料的屈服强度和抗压强度分别达到1 930 MPa和2 500 MPa

综合力学性能最优; 当Ti

SiC

的质量分数继续增加至10%时

复合材料的力学性能难以通过固溶和时效处理进一步改善。

Abstract

To improve the aggregation of reinforcements in titanium matrix composites

solid solution and aging treatments were used

and the effects ofTi

SiC

content on the microstructure and mechanical properties of the composites were studied. Scanning electron microscope and energy spectrum analy-er were adopted to observe the microstructures with diffe

rentTi

SiC

contents. The refining mechanism of the matrix and the precipitation of the reinforcements during the heat treatment were investigated. The results show that the original grain si-e of as-treated composites decreases significantly with theTi

SiC

content

and the grain si-e of lamella - phase also reduces.Ti

particles precipitate in the - and - phases and at the interface of - and - phases

and its content increases withTi

SiC

content. The yield strength and compressive strength of the composites are significantly

关键词

Keywords

references

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