Experimental investigation on wear behavior of titanium alloy (Grade 23) by pin on disc tribometer

Abstract

In this paper, investigating the influence of wear properties such as load, distance, and sliding speed are analyzed to statistical behavior of the wear mass loss and co efficient of frictions as response using high-strength titanium alloys (Grade 23). Dry sliding wear tests were performed on the titanium alloys using Pin-on-disc tribometer according to the ASTM G99-95a with ambient circumstances. Response Surface Methodology (RSM) was employed for experiential run to evaluate the tribological behavior. The input parameters are load (30–50 N), sliding speed (1–2 m/s) and sliding distance [1000–2000 m]. The samples weight loss and coefficient of friction were measured during these experiments. EN 31 steel discs with 80 mm-diameter was utilized as counter pairs. The test results showed that the main factors; interaction of sliding speed and sliding distance, and quadratic impacts of sliding speed, had a considerable influence on wear mass loss and co efficient frictions. The sliding distance has most influences on WML and COF with contribution of 60% and 51% respectively. The smallest WML of 0.0262 g and COF of 0.3308 were reached by optimum input parameters.