Abstract
Because wear is one of the most common reasons for the failure of metals, the development of a low-cost coating with enhanced wear resistance is of great importance. In the present study, Fe–Si–Al coatings with superior and stable wear resistance were prepared by laser cladding Fe–Si–Al industrial waste onto 1045 carbon steel. The microstructure, as well as the wear mechanism of the Fe–Si–Al coatings, was investigated. The Fe–Si–Al coatings consist of a (Al, Fe, Si) solid solution phase in both columnar grain form and equiaxed grain form. The Fe–Si–Al coatings possess enhanced microhardness of 494 ± 15 HV0.3 and low mass loss of 5 × 10−5 mg·(N·m)−1. The wear resistance is ten times higher than that of the 1045 carbon steel matrix. The wear of the Fe–Si–Al coatings is mainly dominated by abrasive wear and adhesive wear. This work provides important insight into the preparation of low-cost, wear-resistant coatings, as well as stable, superior wear resistance.
Highlights
Wear is one of the most common reasons for the failure of metallic materials [1,2]
The Fe73.7 Si13.8 Al12.5 powder was prepared by crushing the leftover material and flotsam from the production of Fe73.7 Si13.8 Al12.5 ribbons, which was provided by the Advanced Technology &
Because the quality of the powder has a significant influence on the property of the laser-cladded
Summary
The improvement of wear resistance, thereby extending the serving life of metallic materials, is of great importance [3]. The laser cladding technique provides an effective method to significantly improve the wear-resisting capability of the metal by cladding a thin wear-resistant coating on its surface [4,5]. The thin, cladded coating can effectively reduce the cost of anti-wear materials [6,7]. The cladded coating has a very limited influence on the matrix by creating a so-called heat-affected zone (HAZ) [8,9]. Different from other coating preparation techniques, such as physical vapor deposition or chemical vapor deposition, laser-cladded coating exhibits reliable metallurgical bonding between the coating and the matrix [10].
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