辽宁石油化工大学学报

辽宁石油化工大学学报 ›› 2023, Vol. 43 ›› Issue (2): 26-34.DOI: 10.12422/j.issn.1672-6952.2023.02.005

• 材料科学与新能源 • 上一篇    下一篇

原位纳米粒子增强Al基复合材料的微观组织及高温力学性能

张君儒1(), 卢宝印2, 李金权2, 昝宇宁3, 王文广2,3()   

  1. 1.辽宁石油化工大学 环境与安全工程学院, 辽宁 抚顺 113001
    2.辽宁石油化工大学 机械工程学院, 辽宁 抚顺 113001
    3.中国科学院金属研究所, 辽宁 沈阳 110016
  • 收稿日期:2022-04-18 修回日期:2022-05-12 出版日期:2023-04-25 发布日期:2023-05-04
  • 通讯作者: 王文广
  • 作者简介:张君儒(1994⁃),女,硕士研究生,从事铝基复合材料的制备及其宽温域服役条件下的安全评价研究; E⁃mail:303819004@qq.com
  • 基金资助:
    国家自然科学基金面上项目(51771194)

Microstructure and High Temperature Mechanical Properties of In⁃Suit Nano⁃Particles Reinforced Al Matrix Composites

Junru Zhang1(), Baoyin Lu2, Jinquan Li2, Yuning Zan3, Wenguang Wang2,3()   

  1. 1.School of Environmental & Safety Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China
    2.School of Mechanical Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China
    3.Institute of Metal Research,Chinese Academy of Sciences,Shenyang Liaoning 110016,China
  • Received:2022-04-18 Revised:2022-05-12 Published:2023-04-25 Online:2023-05-04
  • Contact: Wenguang Wang

摘要:

以纳米TiO2为添加相,按一定比例添加B2 O3和H3BO3,采用高能球磨和粉末冶金法相结合的方法制备了体积分数为4%的纳米氧化物粒子增强Al基复合材料,最后在723 K的条件下以16∶1的挤压比制备了复合材料棒材。结果表明,经过4 h的球磨后,可以实现纳米氧化物在Al基体中的弥散分布;经过893 K的真空热压后,添加相与Al基体发生原位化学反应并生成了Al2O3等。当Ti与B物质的量比为1.0∶1.5时,复合材料的力学性能最优;同时,当B元素的先驱体化学成分不同时,复合材料的力学性能差异显著;TiO2+H3BO3/Al在室温和623 K下的拉伸强度分别为507.7 MPa和151.3 MPa,展现出最高的室温力学性能;TiO2+B2O3/Al在室温和623 K下的拉伸强度分别为353.7 MPa和167.1 MPa,展现出最佳的高温力学性能。

关键词: 纳米, TiO2/Al基复合材料, 球磨, 粉末冶金, 高温力学性能

Abstract:

In this study, nano?TiO2 was used as the additive phase, and B2O3 and H3BO3 were doped in a certain proportion, and then 4% nano?oxide particles reinforced Al matrix composites were prepared by high?energy ball milling and powder metallurgy. Finally, Al matrix composite rods were prepared with an extrusion ratio of 16∶1 at 723 K. The results show that the dispersion distribution of nano?oxides in Al matrix can be realized after 4 h ball milling. After vacuum hot pressing at 893 K, the addition phase reacts with the Al matrix in?situ and forms Al2O3 etc. When the molar ratio of Ti to B is 1.0∶1.5, the mechanical properties of the composites are the best. At the same time, when the chemical composition of the precursor of B element is different, the mechanical properties of the composites are significantly different; the tensile strength of TiO2+H3BO3/Al at room temperature and 623 K is 507.7 MPa and 151.3 MPa, respectively, showing the highest room temperature mechanical properties; the tensile strength of TiO2+B2O3/Al at room temperature and 623 K is 353.7 MPa and 167.1 MPa, respectively, manifesting the excellent high?temperature mechanical properties.

Key words: Nano, TiO2/Al matrix composite, Ball milling, Powder metallurgy, High temperature mechanical properties

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引用本文

张君儒, 卢宝印, 李金权, 昝宇宁, 王文广. 原位纳米粒子增强Al基复合材料的微观组织及高温力学性能[J]. 辽宁石油化工大学学报, 2023, 43(2): 26-34.

Junru Zhang, Baoyin Lu, Jinquan Li, Yuning Zan, Wenguang Wang. Microstructure and High Temperature Mechanical Properties of In⁃Suit Nano⁃Particles Reinforced Al Matrix Composites[J]. Journal of Liaoning Petrochemical University, 2023, 43(2): 26-34.

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               https://journal.lnpu.edu.cn/CN/Y2023/V43/I2/26