CuTi对Ti-6Al-4V钛合金表面金刚石/AlSi复合钎涂层组织与耐磨性能的影响

doi:10.11896/cldb.23080114

材料导报

2024, Vol. 38

Issue (21): 23080114-4 https://doi.org/10.11896/cldb.23080114

金属与金属基复合材料

CuTi对Ti-6Al-4V钛合金表面金刚石/AlSi复合钎涂层组织与耐磨性能的影响

张雷^1,2,3,*, 龙伟民¹, 樊志斌³, 都东², 刘大双⁴, 孙志鹏⁵, 李宇佳⁵, 尚勇⁶

1 中国机械总院集团郑州机械研究所有限公司,新型钎焊材料与技术国家重点实验室,郑州 450001
2 清华大学机械工程系,北京 100084
3 中国机械总院集团宁波智能机床研究院有限公司,浙江宁波 315709
4 合肥工业大学材料科学与工程学院,合肥 230009
5 宁波中机松兰刀具科技有限公司,浙江宁波 315709
6 中铁工程装备集团隧道设备制造有限公司,河南新乡 453000

Effect of CuTi on the Microstructure and Wear Resistance of Diamond/AlSi Composite Braze Coating on Ti-6Al-4V Alloy

ZHANG Lei^1,2,3,*, LONG Weimin¹, FAN Zhibin³, DU Dong², LIU Dashuang⁴, SUN Zhipeng⁵, LI Yujia⁵, SHANG Yong⁶

1 State Key Laboratory of Advanced Brazing Filler Metals and Technology, Zhengzhou Research Institute of Mechanical Engineering Co., Ltd. of China National Machinery Institute Group, Zhengzhou 450001, China
2 Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
3 Ningbo Intelligent Machine Tool Research Institute Co. Ltd. of China National Machinery Institute Group, Ningbo 315709, Zhejiang, China
4 School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China
5 Ningbo Songlan Cutting Tools Technology Co. Ltd., Ningbo 315709, Zhejiang, China
6 Tunneling Equipment Manufacture of China Railway Tunnel Group Co. Ltd., Xinxiang 453000,Henan, China

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摘要钎涂为提高部件表面耐磨性能提供新的技术方案。AlSi钎料可用于钛合金钎焊,但采用AlSi钎料在Ti-6Al-4V钛合金表面钎焊金刚石颗粒难以实现牢固连接,本工作通过在AlSi钎料中添加CuTi合金粉,制备了AlSi复合钎料,并通过感应钎焊在Ti-6Al-4V钛合金表面制备了金刚石复合钎涂层。研究结果表明, 溶解在AlSi合金中的CuTi颗粒增加了钎料,改变了金刚石颗粒在钎涂层中的分布。钎涂层合金基体主要由α-Al、共晶硅、CuAl₂和Ti(Al_1-xSi_x)₃组成;随着CuTi合金含量的增加,复合钎涂层中的Ti(Al_1-xSi_x)₃形态由板条状向胞状转变。当CuTi含量为10%(质量分数)时,金刚石复合钎涂层的耐磨性能最佳,这是由于Ti含量的增加提升了钎料与金刚石颗粒的结合强度,同时,原位反应生成的CuAl₂、TiAl₃硬质颗粒均匀分布于钎涂层中,从而有效提高AlSi合金基体的显微硬度。

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	张雷
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	都东
	刘大双
	孙志鹏
	李宇佳
	尚勇

关键词: 钛合金感应钎涂金刚石 AlSi钎料耐磨性能

Abstract: Braze coating provides a new technological solution for improving the surface wear resistance of components. The method of brazing diamond particles on the surface of Ti-6Al-4V titanium alloy using AlSi brazing material is difficult to achieve firm connection. This experiment prepared AlSi composite brazing material by adding CuTi alloy powder to AlSi brazing material, and prepared diamond composite brazing coating on the surface of Ti-6Al-4V alloy by using induction brazing. The results show that, the CuTi particles dissolved in AlSi alloy increased the viscosity of the brazing material at brazing temperature and changed the distribution of diamond particles in the brazing coating. The composite brazing coating matrix was mainly composed of α-Al, eutectic silicon, Ti(Al_1-xSi_x)₃ and CuAl₂. With the increase of CuTi alloy in the brazing coating, the morphology of Ti(Al_1-xSi_x)₃ changed from lamellar to cellular structure. When the CuTi was 10wt%, diamond composite brazing coating exhibited best wear resistance,because the increase of Ti content improved the bonding strength between brazing filler metal and diamond particles, and at the same time, CuAl₂ and TiAl₃ hard particles generated by in-situ reaction were uniformly distributed in the brazing coating, which effectively improved the microhardness of AlSi alloy matrix.

Key words: titanium alloy induction brazing diamond AlSi brazing alloy wear resistance

出版日期: 2024-11-10 发布日期: 2024-11-11

ZTFLH:

TG425

基金资助: 中原科技创新领军人才项目(234200510015);国家重点研发计划(2021YFB3401100)

通讯作者: *张雷,正高级工程师,硕士研究生导师,中原科技创新领军人才。长期致力于先进连接技术与装备等研发及成果转化工作,主持、参与完成国家重点研发计划、973计划项目、863计划项目、国家自然科学基金、国际合作、省市重大科技专项等15项科技项目;获河南省技术发明一等奖、中国机械工业科学技术特等奖、中国专利优秀奖、青年科技创新奖等省部级科技奖励12项。发表论文46篇。zhanglei86529029@sina.com.cn

引用本文:

张雷, 龙伟民, 樊志斌, 都东, 刘大双, 孙志鹏, 李宇佳, 尚勇. CuTi对Ti-6Al-4V钛合金表面金刚石/AlSi复合钎涂层组织与耐磨性能的影响[J]. 材料导报, 2024, 38(21): 23080114-4.
ZHANG Lei, LONG Weimin, FAN Zhibin, DU Dong, LIU Dashuang, SUN Zhipeng, LI Yujia, SHANG Yong. Effect of CuTi on the Microstructure and Wear Resistance of Diamond/AlSi Composite Braze Coating on Ti-6Al-4V Alloy. Materials Reports, 2024, 38(21): 23080114-4.

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http://www.mater-rep.com/CN/10.11896/cldb.23080114 或 http://www.mater-rep.com/CN/Y2024/V38/I21/23080114

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