[1]庄伟彬,孙蕊,满生博,等.原位自生AlB2/6061复合材料的组织及耐磨性能[J].中国材料进展,2021,40(08):626-630.[doi:10.7502/j.issn.1674-3962.202005034]
 ZHUANG Weibin,SUN Rui,MAN Shengbo,et al.Microstructure and Wear Resistance of In-Situ Synthesized AlB2/6061 Composites[J].MATERIALS CHINA,2021,40(08):626-630.[doi:10.7502/j.issn.1674-3962.202005034]
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原位自生AlB2/6061复合材料的组织及耐磨性能()
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中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
40
期数:
2021年第08期
页码:
626-630
栏目:
出版日期:
2021-08-30

文章信息/Info

Title:
Microstructure and Wear Resistance of In-Situ Synthesized AlB2/6061 Composites
文章编号:
1674-3962(2021)08-0626-05
作者:
庄伟彬孙蕊满生博王筱智刘广柱刘敬福
(辽宁工程技术大学材料科学与工程学院,辽宁 阜新 123000)
Author(s):
ZHUANG Weibin SUN Rui MAN Shengbo WANG Xiaozhi LIU Guangzhu LIU Jingfu
(School of Materials Science and Engineering, Liaoning Technical University, Fuxin 123000, China)
关键词:
铝基复合材料原位自生AlB2颗粒显微组织耐磨性能
Keywords:
aluminum matrix composites in-situ synthesis AlB2 particles microstructure wear resistance
分类号:
TB331
DOI:
10.7502/j.issn.1674-3962.202005034
文献标志码:
A
摘要:
以Al-KBF4为反应体系,采用熔盐反应法制备了原位自生3% AlB2/6061复合材料(质量分数),对比6061基体材料,研究了AlB2颗粒对复合材料组织、硬度和耐磨性能的影响。结果表明,在6061基体材料中原位自生了六边形AlB2颗粒,颗粒尺寸为0.5~2.0 μm。经T6热处理后,3% AlB2/6061复合材料的硬度为HB 119.1,较6061基体提高了26.57%。复合材料比磨损率为1.83×10-8 kg·N-1·m-1,较6061基体下降了17.94%。AlB2颗粒与基体材料之间的润湿性好,界面结合强度高,且其本身硬度高,在磨损时能够起到承载作用,有效地减少了复合材料与对磨材料间的接触面积,提高了复合材料的耐磨性。复合材料的磨损机制主要为磨粒磨损和粘着磨损,其平均摩擦系数为0.235,相较于6061基体材料降低了17.54%。
Abstract:
3wt% AlB2/6061 composites were in-situ synthesized by molten salt method using Al-KBF4 as reaction system. Compared with 6061 matrix, effects of AlB2 particles on the hardness and wear resistance of the composites were studied. The results show that regular hexagonal AlB2 particles with the size of 0.5~2.0 μm can be directly in-situ synthesized in 6061 matrix. After T6 heat treatment, the hardness of 3wt%AlB2/6061 composites is HB 119.1, which is 2657% higher than that of 6061 matrix. The specific wear rate of the composites is 1.83×10-8 kg·N-1·m-1, which is 17.94% lower than that of 6061 matrix. Due to good enough wettability and high interface bonding strength between AlB2 particles and the matrix, and high hardness of the particles, the particles can play a bearing role, then reduce the contact area between the composites and the wear-resistant material during wear, thus wear resistance of the composites is improved. The wear mechanism of the composites is mainly abrasive wear and adhesive wear. The average friction coefficient of the composites is 0.235, which is 17.54% lower than that of 6061 matrix.

备注/Memo

备注/Memo:
收稿日期:2020-05-23修回日期:2020-06-21 基金项目:国家自然科学基金青年基金项目(51601085);辽宁省教育厅科学研究经费项目基础研究项目(LJ2019JL008);辽宁省大学生创新创业训练计划项目(201910147008)第一作者:庄伟彬,男,1983年生,副教授通讯作者:刘敬福,男,1973年生,教授,博士生导师, Email:liujingfu7354@163.com
更新日期/Last Update: 2021-07-30