<p>To enhance the wear resistance of H13 steel surfaces, a Fe901 cladding layer was applied to the surface of the H13 steel. A pin-on-disk friction and wear tester were employed to simulate the differential temperature environment during hot stamping. The Fe901 cladding layer and the H13 steel quenching layer with high-temperature GA plate were compared to indicate the friction and wear properties. To study the phase, microstructure, and wear mechanism of pins and disks, a scanning electron microscope, energy-dispersive spectroscopy, and x-ray diffraction analyses were employed. The results demonstrate that the M<sub>23</sub>C<sub>6</sub> and M<sub>7</sub>C<sub>3</sub> hard phases increase the hardness of the Fe901 cladding layer; at 600, 700 and 800 °C, compared with the quenched pin, the friction coefficient of the Fe901 cladding pin decreased by 5.5%, 7.4%, and 6.6%, respectively, and the wear rate decreased by 24%, 33%, and 29%, separately. Increasing the temperature, the abrasive wear on the cladding pin surface gradually drops and reaches the negligible amount at 800 °C. In comparison with the quenching pin, the cladding pin reduces the abrasive wear; however, the oxidative wear is aggravated. The results show a reliable wear-resistant surface due to the Fe901 cladding layer.</p>

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Friction and Wear Properties of Laser Cladding H13 Pin and Galvannealed Plate under Differential Temperature

  • Wei Chen,
  • Yunkai Wang,
  • Zipeng Lu,
  • Yingxia Zhu,
  • Jiangping Xu

摘要

To enhance the wear resistance of H13 steel surfaces, a Fe901 cladding layer was applied to the surface of the H13 steel. A pin-on-disk friction and wear tester were employed to simulate the differential temperature environment during hot stamping. The Fe901 cladding layer and the H13 steel quenching layer with high-temperature GA plate were compared to indicate the friction and wear properties. To study the phase, microstructure, and wear mechanism of pins and disks, a scanning electron microscope, energy-dispersive spectroscopy, and x-ray diffraction analyses were employed. The results demonstrate that the M23C6 and M7C3 hard phases increase the hardness of the Fe901 cladding layer; at 600, 700 and 800 °C, compared with the quenched pin, the friction coefficient of the Fe901 cladding pin decreased by 5.5%, 7.4%, and 6.6%, respectively, and the wear rate decreased by 24%, 33%, and 29%, separately. Increasing the temperature, the abrasive wear on the cladding pin surface gradually drops and reaches the negligible amount at 800 °C. In comparison with the quenching pin, the cladding pin reduces the abrasive wear; however, the oxidative wear is aggravated. The results show a reliable wear-resistant surface due to the Fe901 cladding layer.