Variation of wear behavior of H13 steel sliding against different-hardness counterfaces

Abstract

Dry sliding tests for H13 steels sliding against different-hardness counterfaces were performed in air under a load of 50-300 N at 25-600 C on a pin-on-disk elevated temperature tester. The hardness of the counterface was noticed to appreciably affect the wear behavior of H13 steel. When H13 steel slid against a hard counterface (55 HRC), the wear rate increased with an increase of temperature. As the load increased, the wear rate marginally increased at 25 C and 200 C but rapidly increased at 400 C and 600 C. When H13 steel slid against a softer counterface (42 HRC), the wear rate roughly decreased with an increase of temperature besides 600 C. As the load increased, the wear rate rapidly increased at 25 C but slightly increased at 200 C, 400 C and 600 C. The large variation of the wear behavior of H13 steel was attributed to the competition of the wear-reduced function and the delamination of tribo-oxide layers. At elevated temperature, the tribo-oxide layer readily delaminated under the abrasive action of the hard counterface; conversely, it stably stayed on worn surfaces to take a wear-reduced function for the soft counterface. Adhesive wear prevailed for the hard counterface at 25-200 C and the soft counterface at 25 C. For the soft counterface at 200-600 C, oxidative mild wear prevailed, but for the hard counterface, at 400-600 C, a mild-to-severe wear transition of oxidative wear occurred.

Dry Sliding Wear Behavior of 38CrNi3MoV Steel at Elevated Temperatures

“…Studies have shown that (H disc /H pin ) was the key factor that affected the material wear characteristics. 20,28) However, the (H disc /H pin ) value was always above 1 at any temperature for the presented M2-38CrNi3MoV steel tribo-system. Therefore, it was no longer suitable to explain the wear behavior of 38CrNi3MoV steel using the (H disc /H pin ) value.…”

“…16) The effect of the hardness of the material on the wear behavior was also studied, and it was found that the hardness ratio of the disc to the pin (H disc /H pin ) was the key factor affecting the material wear characteristics. 20) However, studies on the role of material matrix properties have been limited to the mechanical properties of materials at room temperature. There is still little research on the relationship between material properties and wear behavior at elevated temperatures, which must be further investigated.…”

Investigation on elevated-temperature wear performance and wear failure mechanism of a tungsten-system hot-working die steel

“…Thus, friction-oxide layers would form on the worn surface and affect the state of the sliding pair. The friction-oxide layer is considered to be a decisive factor determining wear behavior, even wear mechanism [1][2][3][4][5][6][7][8][9][10][11][12][13][14][17][18][19]. In mild conditions [17][18][19], the formation and spalling of friction-oxide layers reach an equilibrium state; their existence indeed protects the worn surface from further wear.…”

“…AISI H21 steel, is a typical tungsten-system hot-working die steel. The wear behavior and wear resistance of hot-working die steels were widely studied previously [1][2][3][4][5][6][7][8][9][10]. But the related researches for H21 steel was sparsely reported [3,6,8].…”