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| Microstructure and Mechanical Properties of CoCrFeNiBWSix Coating on Hot Forging Die Steel |
| Received:December 24, 2024 Revised:February 07, 2025 |
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| DOI：10.7643/issn.1672-9242.2025.03.014 |
| KeyWord:laser cladding cobalt-based alloy coating microstructure high temperature friction and wear |
| Author | Institution |
| ZHANG Zhiming |
Daya Bay Nuclear Power Operation Management Co., Ltd., Guangdong Shenzhen , China |
| LIU Yuxin |
National Defense Key Laboratory of Equipment Remanufacturing Technology, Army Armored Forces Academy, Beijing , China |
| SHU Fengyuan |
School of Chemical Engineering and Technology, Sun Yat-sen University, Guangdong Zhuhai , China |
| ZHANG Xiongbo |
School of Chemical Engineering and Technology, Sun Yat-sen University, Guangdong Zhuhai , China |
| DENG Jia |
School of Chemical Engineering and Technology, Sun Yat-sen University, Guangdong Zhuhai , China |
| CUI Juan |
School of Chemical Engineering and Technology, Sun Yat-sen University, Guangdong Zhuhai , China |
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| Abstract: |
| The work aims to deal withproduction hazards of H13 steel caused by insufficient hardness, fatigue failure and wear damage during forging and to improve its surface properties. Self-prepared powder with Si content adjusted on the basis of Co-06 cobalt alloy cladding powder was used as the cladding material. Metalloscope, SEM, XRD, EDS and other analytical tools were used to study the organization of each cladding layer; A TH701 automatic turret digital microhardness tester was used to measure the microhardness of the cladding layer; An HT-1000 type friction wear tester was used to conduct surface friction and wear tests of the cladding layer, to determine the effect of silicon content changes on the microstructure and mechanical properties of the cladding layer. The results showed that the binding zone of the cladding layer with 8% and 12% Si content was narrow and the dilution rate was low. The Fe content in the bonding zone of the cladding layer was high, and the microstructure was amorphous. The main forms of Si elements in the coating were Fe2Si and Fe3Si, and there was a wide halo peak with amorphous phase characteristics. The cladding layer with 8% and 12% Si content had high hardness. The wear forms were abrasive wear and adhesive wear. This research provides a new solution for the application of H13 hot forging die steel in forging production. |
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