摘要
采用SRV微动磨损试验机进行Ti6Al4V钛合金与摩擦副GCr15钢的微动磨损试验,通过分析摩擦系数曲线和截面形貌,探讨了Ti6Al4V钛合金在粘着作用影响下微裂纹的成核与扩展,并探讨了微动磨损的主要磨损机理.结果表明:Ti6Al4V钛合金的截面形貌中发现摩擦转化层(tribologically transformed structure,TTS),微裂纹在TTS中形成,裂纹中的疲劳剥落碎片有助于裂纹的开裂,微动磨损机理主要以疲劳脱层为主.
Fretting test of friction pair of Ti6Al4V titanium alloy with GCr15 was done on SRV fretting tester. By means of analyzing friction coefficient curve and cross-section morphology, the nucleation and propagation of micro-crack Ti6A14V titanium alloy under the influence of sticking were explored and the dominant mechanism of fretting was explored, also. The resulted showed that triblogical transformed structure （TTS） would appear in the cross-section morphology of Ti6Al4V titanium alloy where microcrack formed, the fatigue-peeled debris in crack would be beneficial for the cracking, and the mechanism of fretting would take the fatigue delamination as its essence.
出处
《兰州理工大学学报》
CAS
北大核心
2017年第4期12-15,共4页
Journal of Lanzhou University of Technology
基金
国家自然科学基金(51275225)
关键词
TI6AL4V钛合金
微动磨损
粘着
摩擦系数
摩擦转化层
Ti6A14V titanium alloy
fretting
sticking
friction coefficient
tribological transformed structure
