Effect of Mating Material on Fretting Wear Behavior of 690 Alloy

Fretting wear tests of 690 alloy against two anti-vibration bar materials (annealed 405 stainless steel and quench-tempering 06Cr13) have been carried out using a fretting wear test rig (MFF-3000) with a contact configuration of tube-on-plate. After tests, the worn surfaces and cross-sections were examined through optical microscope, scanning electron microscopy, energy dispersive X-ray, electron probe microanalysis and a 3D optical microscope in order to obtain information of morphology and surface chemical composition. The results indicated that the damage of 690 alloy was severe when the contacting material was annealed 405 stainless steel. Under the same experimental condition, the damage of quench-tempering 06Cr13 anti-vibration bar was worse than that of annealed 405 stainless steel. The wear particles of annealed 405 stainless steel was smaller than that of quench-tempering 06Cr13. Meanwhile, numerous delamination cracks were observed on worn surfaces of quench-tempering 06Cr13. In general, with increasing temperature, more wear particles and higher level of oxygen content were observed. The most severe damage was obtained at 90 ℃ and oscillation amplitude of 100 μm. The main wear mechanisms were delamination and abrasive wear.