1. Contact fatigue and temperature rise on antagonistic surfaces
As Keiji Yokose's team shows , the increase in contact pressure in the case of rolling fatigue leads to a local increase in the temperature of the tribological system (figure 1 ). This can reach 250 to 300°C in the case of an applied stress of 3.5 to 4 GPa with 40% slip in a dual-disc system where the specimens are case-hardened and tempered at 150°C.
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Contact fatigue and temperature rise on antagonistic surfaces
Evolution of tempering softening on carbonitrided unalloyed steel
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