Investigation of wear behaviors from room temperature to 500 °C of in-situ synthesized ceramics reinforced composite coating on TA2 alloy by laser cladding

被引：22
作者：
Ke, Jin [1 ,2 ]
Liu, Xiu-Bo [1 ,2 ,3 ]
Wang, Mian [1 ,2 ]
Liang, Jue [1 ,2 ]
Luo, Ying-She [1 ,2 ]
Chen, De-Qiang [4 ]
机构：
[1] Cent South Univ Forestry & Technol, Hunan Prov Key Lab Mat Surface Interface Sci & Te, Changsha 410004, Peoples R China
[2] Cent South Univ Forestry & Technol, Hunan Prov Key Lab Engn Rheol, Changsha 410004, Peoples R China
[3] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
[4] Henan Univ Sci & Technol, Natl United Engn Lab Adv Bearing Tribol, Luoyang 471003, Peoples R China
来源：
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2020年 / 9卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Laser cladding; Composite coating; Carbide ceramics; In-situ synthesis; Wear behaviors; TRIBOLOGICAL PROPERTIES; MICROSTRUCTURAL EVOLUTION; TI6AL4V ALLOY; RESISTANCE; SUBSTRATE; Y2O3;
D O I：
10.1016/j.jmrt.2020.04.023
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In order to enhance the wear property of TA2 alloy, ceramics reinforced composite coating was prepared on TA2 alloy by laser cladding with preplaced mixed WS2-TiC-Ti powders (mole ratio of 1:3:6). The micro-structure, phase compositions and micro-hardness of composite coating were analyzed in detail. The dry-sliding wear behaviors and corresponding wear mechanisms of TA2 alloy substrate and composite coating at different test temperatures (RT, 250 and 500 degrees C) were also studied systematically. The results showed that alpha-Ti, TiS, Ti2SC, (Ti, W)C1-x and TiC were in-situ synthesized in laser processing. The micro-hardness of the coating was improved significantly due to the formation of carbide ceramics Ti2SC, (Ti, W)C1-x and TiC. The coating exhibited excellent wear property at 500 degrees C, i.e. low friction coefficient (0.339) and wear rate (4.87 x 10(-6) mm(3)/Nm). The predominant wear mechanism of the composite coating was formation and peeling off of lubricating transfer films, with incidental effect of adhesive wear and oxidation wear. (C) 2020 The Author(s). Published by Elsevier B.V.
引用
收藏
页码：6397 / 6408
页数：12
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