Investigation of high temperature wear performance on laser processed nodular iron using optimization technique

In this study, CoNiCrAlY metallic coatings were deposited on an Inconel 718 nickel-based superalloy substrate material using the detonation gun (D-gun) and supersonic plasma spraying (SSPS) techniques. The microstructural and mechanical properties in addition to their room and high temperature wear behavior of the produced coatings were evaluated. The wear tests were performed at room temperature (rt), 250 and 500 °C using 2N and X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive spectroscopy (EDS) analyses of the worn coatings were performed to assess their wear performance. The coatings produced with D-gun process exhibited higher hardness and lower porosity (550 ± 50 HV0.25 hardness and 1.2 ± 1.0% porosity) than SSPS coatings (with 380 ± 30 HV0.25 hardness and 1.5 ± 1.0% porosity) which resulted in better room- and high temperature wear performance for D-gun coatings. The worn surfaces of both coatings exhibited formation of tribological layers and superficial microstructural changes by varying temperature and load conditions. Increasing load and temperature resulted in increased wear loss whereas increasing temperature resulted in reduced COF values for both coatings.

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Influences of the compositions and mechanical properties of HVOF sprayed bimodal WC-Co coating on its high temperature wear performance

International Journal of Refractory Metals and Hard Materials ◽

10.1016/j.ijrmhm.2017.08.012 ◽

2017 ◽

Vol 69 ◽

pp. 158-163 ◽

Cited By ~ 17

Author(s):

Pengbo Mi ◽

Teng Wang ◽

Fuxing Ye

Keyword(s):

Mechanical Properties ◽

High Temperature ◽

Wear Performance ◽

High Temperature Wear

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High temperature wear performance of laser cladding maraging steel with low nickel on AISI H13 steel

Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science ◽

10.1177/09544062211012731 ◽

2021 ◽

pp. 095440622110127

Author(s):

Wei Jiang ◽

Shuqi Wang ◽

Lan Wang

Keyword(s):

Thermal Stability ◽

Wear Resistance ◽

High Temperature ◽

Maraging Steel ◽

Laser Cladding ◽

H13 Steel ◽

Wear Performance ◽

High Temperature Wear ◽

Steel Coating ◽

Thermal Stability Of

H13 steel is prone to insufficient high temperature wear resistance due to thermal wear under high temperature conditions. To improve high temperature wear resistance of H13 steel, the maraging steel coating with low-nickel was successfully prepared owing to excellent thermal stability. Sliding wear tests at 400, 500 and 600 °C were carried out for the laser cladding coating and H13 steel to comparatively investigate their high temperature wear performance and mechanism. The microstructure, phases, hardness and thermal stability of the maraging steel coating were also studied. The results showed that the maraging steel coating possessed excellent high temperature wear resistance and effectively improved the high temperature wear resistance of H13 steel by laser cladding. The superior thermal stability of maraging steel played an important role in improving its high temperature wear resistance.

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