Fig. 4
From: The effect of QPQ treatment on the wear and corrosion resistance of 42CrMo bearing steel
Surface hardness of different QPQ-treated samples: 1-580°C × 90 min, 2-580°C × 120 min, 3-620°C × 90 min, 4-620°C × 120 min, 5-Untreated.
Fig. 4 | Scientific Reports
