Abstract
Scanning electron beam surface alloying can effectively improve the microstructure of the surface layer of the material. Plasma thermal spraying and scanning electron beam technology were used to conduct molten alloy treatment on the surface of 20Cr steel to study the formation mechanism of the gradient structure of the sample surface. The study found that after scanning electron beam surface alloying treatment, the surface coating of the sample is composed of alloying layer and heat-affected zone. The microstructure of the alloying layer is acicular martensite, lath martensite, retained austenite and the second phase of the mesh structure, the crystal grains in this region are equiaxed, columnar and dendritic crystal. The heat-affected zone is composed of a complete phase transformation zone and a partial phase transformation zone, the microstructure of the complete transformation zone is acicular martensite and lath martensite, and the microstructure of the partial transformation zone is acicular martensite and ferrite.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
