摩擦层的形成对TC4合金磨损性能的影响

王兰; 王树奇; 张秋阳

摩擦层的形成对TC4合金磨损性能的影响

江苏大学材料科学与工程学院, 江苏镇江 212013

基金项目:

国家自然科学基金(51071078)、江苏省材料摩擦学重点实验室开放基金(Kjsmcx2012004)和江苏省普通高校研究生科研创新项目(CXLX13-653)资助.

详细信息

中图分类号: TG115.5⁺8
计量
- 文章访问数: 1850
- HTML全文浏览量: 10
- PDF下载量: 1385
出版历程
- 收稿日期: 2013-11-04
- 修回日期: 2014-05-16
- 发布日期: 2014-11-24

Effect of the Formation of Tribo-Layer on the Wear Performance of TC4 Alloy

School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China

摘要

摘要: 采用MG-2000型销盘式高温磨损试验机对TC4合金在环境温度为200、 400和600 ℃,载荷为50~250 N时的磨损性能进行了研究.利用SEM、EDS、XRD以及XPS等对试样磨面和剖面的形貌、成分及结构进行了观察与分析.结果表明:在不同的试验条件下,磨损表面均会形成一层不同于基材的摩擦层.摩擦层的成分及分布形态对TC4合金的磨损性能产生了重要的影响.在200和400 ℃时,摩擦层分布不均匀且不含或仅含少量的摩擦氧化物,这样的摩擦层对磨损表面不具有保护作用,TC4合金的磨损率随着温度的提高而提高.在600 ℃时,摩擦层分布均匀,且摩擦层含有较多的TiO₂和TiO摩擦氧化物,TC4合金的磨损率大幅下降.因此,磨损过程中形成的均匀且含有大量摩擦氧化物的摩擦层极大地改善了TC4合金的磨损性能.
- TC4合金 /
- 磨损 /
- 摩擦层 /
- 摩擦氧化物 /
- 磨损性能
Abstract: The wear performance of TC4 alloy was investigated under the load of 50~250 N at the ambient temperature of 200,400 and 600 ℃ by using MG-2000 type pin-on-disc high temperature wear tester. The morphologies, compositions and phase of worn surface and worn cross-section for the specimen were observed and analyzed by scanning electron microscopy, energy dispersive spectrometry, X-ray diffraction and X-ray photoelectron spectroscopy. The results show that tribo-layers, which chemical composition was different from the matrix, were formed on the worn surfaces. The composition and distribution of tribo-layer had an important impact on wear performance of TC4 alloy. At 200 and 400 ℃, the tribo-layer with no or trace tribo-oxides distributed unevenly and was not protective. Wear rate increased with an increase of the temperature. At 600 ℃, the tribo-layer of tribo-oxides TiO₂ and TiO distributed uniformly and wear rate substantially decreased. Thus, the tribo-layer which was rich in tribo-oxides markedly improved the wear performance of TC4 alloy.
- TC4 alloy /
- wear /
- tribo-layer /
- tribo-oxide /
- wear performance

HTML全文

参考文献(11)

[1]	Kim H J,Emge A,Karthikeyan S,et al. Effects of tribooxidation on sliding behavior of aluminum[J]. Wear,2005,259: 501-505.
[2]	Rigney D A. Transfer,mixing and associated chemical and processes during the sliding of ductile materials[J]. Wear,2000,245: 1-9.
[3]	Young Jr J L,Kuhlmann Winsdorf D,Hull R. The generation of mechanically mixed layers (MMLs) during sliding contact and the effects of lubricant thereon[J]. Wear,2000,246: 74-90.
[4]	Tuckarta W,Iurmana L,Forlererb E. Influence of microstructure on tribologically mixed layers[J]. Wear,2011,271: 792-801.
[5]	Molinari A,Straffelini G,Tesi B,et al. Dry sliding wear mechanisms of the Ti6Al4V alloy[J]. Wear ,1997,208: 105-112.
[6]	Straffelini G,Molinari A. Dry sliding wear of Ti-6Al-4V alloy as influenced by the counterface and sliding conditions[J]. Wear,1999,236: 328-338.
[7]	Qiu M,Zhang Y Z,Yang 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: 71-75.
[8]	邱明,张永振,杨建恒,等.摩擦热对Ti6Al4V合金摩擦磨损性能的影响[J]. 摩擦学学报,2006(23): 203-207. Qiu M,Zhang Y Z,Yang J H,et al. Effects of friction heat on tribological properties of Ti6Al4V alloy[J]. Tribology,2006(23): 203-207.
[9]	Mao Y S,Wang L,Chen K M,et al. Tribo-layer and its role in dry sliding wear of Ti-6Al-4V alloy[J]. Wear,2013,297: 1 032-1 039.
[10]	Cui X H,Mao Y S,Wei M X,et al. Wear characteristics of Ti-6Al-4V alloy at 20~400℃[J]. Tribology Transaction,2012,55:185-190.
[11]	刘勇,杨德庄,何世禹,等.TC4 合金的磨损率及磨损表面层的显微组织变化[J]. 稀有金属材料与工程,2005,34(1): 128-131. Liu Y,Yang D Z,He S Y,et al. Study on dry sliding wear of TC4 alloy in vacuum[J]. Rare Metal Materials and Engineering,2005,34(1): 128-131 .