High-temperature tribological properties of AlFeCrCoNiTi high-entropy alloy coatings laser cladded with different parameters

Cui Shaowei; Wang Shuqi; Jiang Wei; Liu Xiyan

doi:10.7513/j.issn.1004-7638.2021.03.024

Volume 42 Issue 3

Jun. 2021

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Cui Shaowei, Wang Shuqi, Jiang Wei, Liu Xiyan. High-temperature tribological properties of AlFeCrCoNiTi high-entropy alloy coatings laser cladded with different parameters[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 155-161, 192. doi: 10.7513/j.issn.1004-7638.2021.03.024

Citation:

Cui Shaowei, Wang Shuqi, Jiang Wei, Liu Xiyan. High-temperature tribological properties of AlFeCrCoNiTi high-entropy alloy coatings laser cladded with different parameters[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 155-161, 192. doi: 10.7513/j.issn.1004-7638.2021.03.024

Citation:

Cui Shaowei, Wang Shuqi, Jiang Wei, Liu Xiyan. High-temperature tribological properties of AlFeCrCoNiTi high-entropy alloy coatings laser cladded with different parameters[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 155-161, 192. doi: 10.7513/j.issn.1004-7638.2021.03.024

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High-temperature tribological properties of AlFeCrCoNiTi high-entropy alloy coatings laser cladded with different parameters

doi: 10.7513/j.issn.1004-7638.2021.03.024

School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China

Received Date: 2020-12-16
Publish Date: 2021-06-10

Abstract

Abstract

Some coatings were laser cladded on H13 steel and the micro-structure and hardness of the coatings were analyzed. The high-temperature tribological performance of H13 steel and each coating was studied by a pin-plate high-temperature wear testing machine. The analysis of the micro-morphology, composition and phase of the friction layer on each coating was conducted by SEM, EDS and XRD, which provided the evidence for the wear mechanism. The results show that the wear volume of laser cladding coatings is always an order of magnitude lower than that of H13 steel, regardless of the temperature or the normal load. When the temperature is 400 ℃, for all the coatings the velocity of weight loss caused by wear is higher than the velocity of weight gain caused by oxidation. As a result, the overall weight change tendency is decreasing. When the temperature is 600 ℃, in contrast, the velocity of the weight loss is lower than that of the weight gain. Thus, the overall weight change tendency is tincreasing. Coating 1 has the highest resistance to high-temperature softening. The surface of the friction layer on this coating always remains intact, regardless of the temperature or the normal load. Coating 2 has the lowest resistance to high-temperature softening. When the temperature is 400 ℃, mass peeling occurs on the surface of the friction layer even when the normal load is only 50 N. When the temperature is 600 ℃, the extrusion degree of the friction layer on this coating is more serious than those of other coatings. The resistance to high-temperature softening of coating 3 is lower than that of coating 1 but is higher than coating 2. When the temperature is 400 ℃, the surface of the friction layer remains intact with low normal loads. But mass peeling occurs on it with high normal loads. When the temperature is 600 ℃, the extrusion degree of the friction layer on this coating is less serious than that on coating 2 but still kind of harsh.
- H13 steel,
- laser cladding,
- wear mechanism,
- resistance to high temperature softening

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References(13)

References

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