RESEARCH ON MECHANICAL OF GRAPHENE REINFORCED TIAL SELF-LUBRICATING COMPOSITE MATERIALS

LI WenWen; YANG LiYing; WANG ShouRen; WANG Che

doi:10.16579/j.issn.1001.9669.2019.05.012

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RESEARCH ON MECHANICAL OF GRAPHENE REINFORCED TIAL SELF-LUBRICATING COMPOSITE MATERIALS

更新时间：2022-09-22

- RESEARCH ON MECHANICAL OF GRAPHENE REINFORCED TIAL SELF-LUBRICATING COMPOSITE MATERIALS
- Journal of Mechanical Strength Vol. 41, Issue 5, Pages: 1085-1089(2019)
- 作者机构：
  
  1. 济南大学机械工程学院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2019.05.012
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LI WenWen, YANG LiYing, WANG ShouRen, et al. RESEARCH ON MECHANICAL OF GRAPHENE REINFORCED TIAL SELF-LUBRICATING COMPOSITE MATERIALS. [J]. 41(5):1085-1089(2019)
DOI：

LI WenWen, YANG LiYing, WANG ShouRen, et al. RESEARCH ON MECHANICAL OF GRAPHENE REINFORCED TIAL SELF-LUBRICATING COMPOSITE MATERIALS. [J]. 41(5):1085-1089(2019) DOI： 10.16579/j.issn.1001.9669.2019.05.012.

摘要

利用超声波分散和机械球磨法把石墨烯均匀混合于钛铝基体,采用冷压压制成型和真空热压烧结技术制备石墨烯增强钛铝合金自润滑复合材料。采用扫描电子显微镜(SEM)、透射电子显微镜(TEM)和能谱分析仪(EDS)等对该自润滑复合材料的微观组织结构及其力学性能进行了研究。结果表明:石墨烯均匀的分布于钛铝合金自润滑复合材料基体中且石墨烯与钛铝合金未发生界面反应,石墨烯增强TiAl合金自润滑复合材料致密性较好。当石墨烯的加入量为0.3wt%时,自润滑复合材料的屈服强度由469 MPa提高到555 MPa;自润滑复合材料的硬度达到468 HV,比基体提高了11%;随着石墨烯含量的增加,复合材料的硬度和屈服强度逐渐增大,当石墨烯的添加量为0.7 wt%时,复合材料的硬度和屈服强度达到最大。

Abstract

Using the method of ultrasonic dispersion and the mechanical ball grinding the graphene mixing in titanium aluminum substrate, pressed by cold pressing molding and vacuum hot-pressing sintering technology of titanium aluminium alloy self-lubricating composites reinforced preparation of graphene. Using scanning electron microscopy（SEM）and transmission electron microscopy（TEM） and energy spectrum analysis（EDS）on microstructure and mechanical properties of the self-lubricating composites were studied. The results showed that graphene in the uniform distribution of titanium alloy substrate and graphene not interface reaction of titanium aluminium alloy, composite material density is better. When the amount of graphene is 0.3 wt%,self-lubricating composite material yield strength increase from 469 MPa to 555 MPa. The hardness of the self-lubricating composite was 11% higher than that of matrix, up to 468 HV; with the increase of the content of graphene composite material hardness and yield strength increases gradually, while graphene content is 0.7 wt %, reached the maximum hardness and yield strength of the composite material.

关键词

石墨烯钛铝合金材料微观组织结构力学性能

Keywords

GraphemeTiAl based alloy materialMicrostructureMechanical properties

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