Materials Reports  2019, Vol. 33 Issue (z1): 362-365 |
| METALS AND METAL MATRIX COMPOSITES |
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| Effect of Surface Tungsten Alloying on Microstructure and Hardness of High Chromium Cast Iron |
| ZHANG Zhexuan, ZHOU Zaifeng, SHAN Quan, LI Zulai, JIANG Yehua, ZHANG Fei
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| School of Material Science and Engineering, Kunming University of Science and Technology, Kunming 650093 |
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Abstract Surface tungsten alloying high chromium cast iron material was fabricated by vacuum expendable pattern casting (V-EPC) technology, the effect of surface tungsten alloying on microstructure and hardness of high chromium cast iron matrix material was investigated. The results show that the Rockwell hardness of matrix zone was about 35—40HRC, but the surface alloying zone reached about 55—60HRC. The brittle phase Fe3W3C had significant effect on increasing the hardness of matrix material. Meanwhile, the high-hardness phase Fe3W3C was mixed with the low-hardness phase Fe-Cr-C into surface alloying zone, the Fe-Cr-C effectively absorbed load and prevented Fe3W3C from breaking, which had a beneficial effect on improving the overall performance of material.
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Published: 05 July 2019
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| About author:: Zhexuan Zhang received his B.S. degree in Mechanical Engineering from Hefei University of Technology in 2016. He is currently pursuing his MA.Eng. at the School of Material Science and Engineering, Kunming University of Science and Technology under the supervision of A.P. Quan Shan. His research has focused on metal matrix composites.Quan Shan received his B.E. degree in Mechanical Engineering from Kunming University of Science and Technology in 2008 and received his Ph.D. degree in material processing engineering from the School of Material Science and Engineering, Kunming University of Science and Technology, in 2013. His research inte-rests are metal materials and metal matrix composites, and has published more than 10 SCI/EI papers in rela-ted fields recently, including Journal of Materials Science & Technology, Journal of Alloys and Compounds, Journal of Rare Earths, etc. |
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