Study of Aging Treatment on the Coating with 3%Cu/Fe-Based Alloy Fabricated by Laser Cladding

Fang Zhou; Tao Zhu; Gao Li

doi:10.4028/www.scientific.net/AMR.391-392.474

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 391-392Study of Aging Treatment on the Coating with...

Study of Aging Treatment on the Coating with 3%Cu/Fe-Based Alloy Fabricated by Laser Cladding

Abstract:

The composite coating with 3%Cu/ Fe-based alloy was fabricated on Q235A steel by laser cladding. The effect of aging treatment on the microstructure and properties of laser-cladded coating was investigated. The results show that there is α-Fe phase accompanied by the M₇C₃ with an orthorhombic crystal structure and M₂₃C₆ in the cladded coating. The preferred direction at (110) crystal plane exist in the α-Fe. The TEM observation shows that the high density dislocations exist in the martensite. When the cladded coatings are aged at 550 for 20 h and 30 h respectively, the ε-Cu particles precipitate dispersedly from the supersaturated α-Fe solid solution along the M₇C₃. The ε-Cu particles play the role of anchoring dislocation. The microhardness and the wear resistance of coatings are increased greatly after the aging treatment. The coating aged for 20 h at 550 presents the best wear resistance in the tested coatings. With aging time, the microhardness and the wear resistance of cladding coating are decreased.

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Periodical:

Advanced Materials Research (Volumes 391-392)

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474-478

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.391-392.474

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Online since:

December 2011

Authors:

Fang Zhou, Tao Zhu, Gao Li

Keywords:

3%Cu/Fe-Based Alloy, Aging, Laser Cladding, Microstructure

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