| Title |
Research Paper - Mechanical Behavior - : Dry Sliding Wear Behavior of Heat Treated Fe - 12Cr - Mo - V - 1.6C Tool steel |
| Authors |
강신철(Shin Chul Kang); 서인교(In Kyo Suh); 김윤호(Yoon Ho Kim) |
| Abstract |
Dry sliding wear behavior of heat treated Fe-12Cr-Mo-V-1.6C tool steel was investigated. Friction coefficient and wear rate were measured with variations of applied load and sliding speed at ambient temperature. Wear debris and worn surface of counter part were observed using SEM. Friction coefficients according to applied load and sliding speed were 0.27∼0.60. Friction coefficient decreased proportional to the increase of the load and was able to be expressed in the form of power law μ=BN^k at constant sliding speed. As load and sliding velocity increased, attainable flash temperature at asperity rose, which resulted in the increase of the wear rate. The distance-dependent transition from severe wear to mild wear due to surface oxidation at asperity and debris was observed during the running-in process. Increase in the debris size due to increase of load delayed the transition time from severe wear to mild wear. |