Abstract:Dry sliding wear tests and specially designed double sliding wear tests of TC11 titanium alloys were carried out at sliding velocities of 2.68 m/s and 4 m/s by using a MPX-2000 type pin-on-disc wear tester. The phase, composition and morphology of worn surfaces and tribo-layers were analyzed in detail by X-ray diffractometer, scanning electron microscope and energy dispersive spectrometer. The microhardness distribution from tribo-layers to the matrix was measured by using a digital microhardness tester. The results show that tribo-layers are always found to be formed on the worn surface of TC11 titanium alloy at different sliding rates. The phase, state and property of the tribo-layer vary with the sliding conditions. Tribo-layers can be divided into tribo-oxide layer and no-oxide tribo-layer. Through 4 m/s & 2.68 m/s double sliding wear test, the tribo-oxide layer formed in the dry sliding wear process of TC11 titanium alloy is proved to possess good wear-reducing effect. The wear mechanism of TC11 titanium alloy is delamination wear at 2.68 m/s, and oxidative wear at 4 m/s and 4 m/s & 2.68 m/s.
李新星, 王红侠, 施剑峰, 韩伯群. TC11钛合金表面保护性摩擦氧化层的形成及作用[J]. 材料工程, 2020, 48(10): 141-147.
LI Xin-xing, WANG Hong-xia, SHI Jian-feng, HAN Bo-qun. Formation and function of protective tribo-oxide layers on TC11 titanium alloy surface. Journal of Materials Engineering, 2020, 48(10): 141-147.
[1] 刘莹莹,陈子勇,金头男,等. 600℃高温钛合金发展现状与展望[J]. 材料导报, 2018, 32(11):1863-1869. LIU Y Y, CHEN Z Y, JIN T N, et al. Present situation and prospect of 600℃ high temperature titanium alloys[J]. Materials Review, 2018, 32(11):1863-1869.
[2] 朱知寿. 我国航空用钛合金技术研究现状及发展[J]. 航空材料学报, 2014, 34(4):44-50. ZHU Z S.Recent research and development of titanium alloys for aviation application in China[J]. Journal of Aeronautical Materials, 2014, 34(4):44-50.
[3] BUDINSKI K G. Tribological properties of titanium alloys[J]. Wear, 1991, 151(2):203-217.
[4] MALIUTINA I N, SIMOHAND H, SIJOBERT J, et al. Structure and oxidation behavior of γ-TiAl coating produced by laser cladding on titanium alloy[J]. Surface and Coatings Technology, 2017, 319:136-144.
[5] 杨闯,彭晓东,刘静,等. TC4钛合金低压真空氮化改性层的制备与性能[J]. 材料工程, 2015, 43(3):78-82. YANG C, PENG X D, LIU J, et al. Preparation and property of low pressure vacuum nitriding modified layer on TC4 titanium alloy[J]. Journal of Materials Engineering, 2015, 43(3):78-82.
[6] NIU X, YU Y, MA L, et al. Experimental study on the dynamic mechanical properties of titanium alloy after thermal oxidation[J]. Applied Physics A, 2016, 122(6):597.
[7] BALLA V K, SODERLIND J, BOSE S, et al. Microstructure, mechanical and wear properties of laser surface melted Ti6Al4V alloy[J]. Journal of the Mechanical Behavior of Biomedical Materials, 2014, 32(4):335-344.
[8] 常海,郭雪刚,文磊,等. SiC纳米颗粒对TC4钛合金微弧氧化涂层组织结构及耐蚀性能的影响[J].材料工程,2019,47(3):109-115. CHANG H, GUO X G, WEN L, et al. Influence of SiC nanoparticles on microstructure and corrosion behavior of microarc oxidation coatings formed on TC4 alloy[J]. Journal of Materials Engineering, 2019, 47(3):109-115.
[9] MOLINARI A, STRAFFELINI G, TESI B, et al. Dry sliding wear mechanisms of the Ti6Al4V alloy[J]. Wear, 1997, 208(1/2):105-112.
[10] STRAFFELINI G, MOLINARI A. Dry sliding wear of Ti-6Al-4V alloy as influenced by the counterface and sliding conditions[J]. Wear, 1999, 236(1/2):328-338.
[11] QIU M, ZHANG Y Z, ZHANG J H, et al. Microstructure and tribological characteristics of Ti-6Al-4V alloy against GCr15 under high speed and dry sliding[J]. Materials Science and Engineering:A, 2006, 434(1/2):71-75.
[12] ALAM M O, HASEEB A S M A. Response of Ti-6Al-4V and Ti-24Al-11Nb alloys to dry sliding wear against hardened steel[J]. Tribology International, 2002, 35(6):357-362.
[13] CHELLIAH N, KAILAS S V. Synergy between tribo-oxidation and strain rate response on governing the dry sliding wear behavior of titanium[J]. Wear, 2009, 266(7/8):704-712.
[14] 张秋阳,王兰,李新星,等. TC11合金的高温磨损行为和耐磨性[J]. 稀有金属, 2015, 39(10):877-881. ZHANG Q Y, WANG L, LI X X, et al. Elevated-temperature wear behavior and wear resistance of TC11 alloy[J]. Chinese Journal of Rare Metals, 2015, 39(10):877-881.
[15] 王兰,丁红燕,刘爱辉,等. TC4合金在不同摩擦体系中磨损性能的研究[J]. 稀有金属材料与工程, 2017,46(9):2449-2454. WANG L, DING H Y, LIU A H, et al. Wear performance of TC4 alloys in different tribo-systems[J]. Rare Metal Materials and Engineering, 2017, 46(9):2449-2454.
[16] LI X X, ZHOU Y, LI Y X, et al. Dry sliding wear characteristics of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy at various sliding speeds[J]. Metallurgical and Materials Transactions A, 2015, 46(9):4360-4368.
[17] LI X X, ZHOU Y, JI X L, et al. Effects of sliding velocity on tribo-oxides and wear behavior of Ti-6Al-4V alloy[J]. Tribology International, 2015, 91:228-234.
[18] 魏敏先. 严酷工况下钢铁材料的氧化磨损及轻微-严重磨损转变[D]. 镇江:江苏大学, 2011. WEI M X. Oxidative wear and mild-to-severe wear transition of steels and irons under severe conditions[D]. Zhenjiang:Jiangsu University, 2011.