| DENG Yu,YU Sheng-fu,YAN Ning,XING Shu-le,HUANG Lin-bing.Effects of V / Nb on Microstructure and Properties of Arc Sprayed Martensitic Stainless Steel Alloy Coatings[J],42(6):27-31 |
| Effects of V / Nb on Microstructure and Properties of Arc Sprayed Martensitic Stainless Steel Alloy Coatings |
| Received:June 27, 2013 Revised:July 27, 2013 |
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| DOI： |
| KeyWord:martensitic stainless steel alloy V Nb high velocity arc spraying abrasive wear resistance adhesion strength |
| Author | Institution |
| DENG Yu |
College of Mechanical and Electrical Engineering, Guangdong University of Petrochemical Technology, Maoming ,China;Guangdong Province Key Laboratory of Petrochemical Equipments, Maoming ,China |
| YU Sheng-fu |
College of Material Science and Engineering, Huazhong University of Science and Technology, Wuhan ,China |
| YAN Ning |
College of Material Science and Engineering, Huazhong University of Science and Technology, Wuhan ,China |
| XING Shu-le |
College of Material Science and Engineering, Huazhong University of Science and Technology, Wuhan ,China |
| HUANG Lin-bing |
College of Material Science and Engineering, Huazhong University of Science and Technology, Wuhan ,China |
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| Abstract: |
| Objective To study effects of V and Nb on microstructure and properties of arc sprayed martensitic stainless steel alloy. Methods New arc sprayed martensitic stainless steel flux-cored wires with different amount of V / Nb were developed, and the wear resistant alloy coatings were prepared on the surface of the Q235 low-carbon steel by HAVS using the wire. The microstructure and properties of the alloy coatings were detected and analyzed by using the equipment such as SEM, XRD, microhardness tester and wear tester. Results The coatings had good forming properties, less porosity, uniformity of microstructure and compact structure. The average value of adhesion strength was about 35 . 48 MPa. The average microhardness value was about 523 HV0 . 1 , which was higher than that of 4 Cr13 coatings, and the abrasive wear resistance was enhanced with the additional use of elements V and Nb. Conclusion V / Nb could improve the forming of carbide hard phase particles in the coatings and enhance the performance of the alloy coatings. |
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