The Tribological Behavior of a Ti-46Al-2Cr-2Nb Alloy Under Liquid Paraffine Lubrication

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	The Tribological Behavior of a Ti-46Al-2Cr-2Nb Alloy Under Liquid Paraffine Lubrication
	Cheng J(程军)1,2 ; Yang J(杨军)1 ; Ma JQ(马吉强)1,2 ; Bi QL(毕秦岭)1 ; Zhang XH(张兴华)1,2 ; Fu LC(符立才)1 ; Li F(李斐)1 ; Zhu SY(朱圣宇)1 ; Liu WM(刘维民)1 ; Yang J(杨军)
刊名	Tribology Letters
	2012
卷号	46 期号:3 页码:233-241
关键词	Intermetallics Wear Ti-46Al-2Cr-2Nb alloy Oil lubrication
ISSN号	1023-8883
通讯作者	杨军
英文摘要	The tribological behavior of a Ti-46Al-2Cr-2Nb alloy prepared by hot-pressed sintering was investigated under liquid paraffine lubrication against AISI 52100 steel ball in ambient environment and at varying loads and sliding speeds. For comparison, the tribological behavior of a common Ti-6Al-4V alloy was also examined under the same testing conditions. The worn surfaces of the two alloys were analyzed using a scanning electron microscope. The friction coefficient of the Ti-46Al-2Cr-2Nb alloy in the range of 0.13–0.18 was significantly lower than that of the Ti-6Al-4V alloy (0.4–0.5), but comparable to that under dry sliding, which indicated that TiAl intermetallics could be more effectively lubricated by liquid paraffine than titanium alloys. Applied load and sliding speed have little effect on the friction coefficient of the Ti-46Al-2Cr-2Nb alloy. The wear rate of the Ti-46Al-2Cr-2Nb alloy was about 45–120 times lower than that of Ti-6Al-4V alloy owing to Ti-6Al-4V alloy could not be lubricated effectively. The wear rate of the Ti-46Al-2Cr-2Nb alloy increased with increasing applied load, but decreased slightly at first and then increased with increasing sliding speed. The wear mechanism of the Ti-46Al-2Cr-2Nb intermetallics under liquid paraffine lubrication was dominated by main plowing and slight flaking-off, but that of the Ti-6Al-4V alloy was plastic deformation and severe delamination.
学科主题	材料科学与物理化学
收录类别	SCI
资助信息	National Natural Science Foundation of China (50801064;51141003);the National 973 Project of China (2007CB607601)
语种	英语
WOS记录号	WOS:000303876300003
公开日期	2013-07-12
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/3506]
专题	兰州化学物理研究所_固体润滑国家重点实验室
通讯作者	Yang J(杨军); Yang J(杨军); Yang J(杨军)
作者单位	1.Chinese Acad Sci, State Key Lab Solid Lubricat, Lanzhou Inst Chem Phys, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Cheng J,Yang J,Ma JQ,et al. The Tribological Behavior of a Ti-46Al-2Cr-2Nb Alloy Under Liquid Paraffine Lubrication[J]. Tribology Letters,2012,46(3):233-241.
APA	Cheng J.,Yang J.,Ma JQ.,Bi QL.,Zhang XH.,...&杨军.(2012).The Tribological Behavior of a Ti-46Al-2Cr-2Nb Alloy Under Liquid Paraffine Lubrication.Tribology Letters,46(3),233-241.
MLA	Cheng J,et al."The Tribological Behavior of a Ti-46Al-2Cr-2Nb Alloy Under Liquid Paraffine Lubrication".Tribology Letters 46.3(2012):233-241.