Research on Thermodynamics and Wear Resistance of In-situ NbC Reinforced YCF102 Cladding Layer

doi:10.12068/j.issn.1005-3026.2021.04.012

Abstract

Abstract: The difficulty of cladding layer performance to meet the specific process requirements has become one of the key factors limiting the development of laser cladding. In order to solve this problem， the in-situ NbC reinforced YCF102 cladding layer was prepared on the 45# steel substrate， and the thermodynamic analysis was carried out. The microstructure and composition were analyzed and researched by XRD， SEM and EDS. The microhardness and wear resistance of the cladding layer were researched systematically. The results showed that the change of laser power has a significant effect on the reaction degree of the in-situ reaction in the laser cladding process， and the laser power that is too large or too small will inhibit the in-situ reaction.The main morphology of NbC particles formed in the in-situ YCF102 cladding layer is quadrilateral and petal shaped. When the laser power is 525W， the in-situ NbC reinforced YCF102 cladding layer has higher microhardness and better wear resistance.

Key words: laser cladding; in-situ NbC; microstructure; microhardness; wear resistance

CLC Number:

TH17

XI Wen-chao， SONG Bo-xue， LIANG Ying-dong， YU Tian-biao. Research on Thermodynamics and Wear Resistance of In-situ NbC Reinforced YCF102 Cladding Layer[J]. Journal of Northeastern University(Natural Science), 2021, 42(4): 538-543.

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