Scratch behavior of high speed steels for hot rolls |
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Authors: | Li Zhou Dale Sun Changsheng Liu Chunguang Li Lisong Yao |
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Affiliation: | 1. Shougang Research Institute of Technology, Beijing 100041, China;Technology Canter, Baosteel Co. Ltd., Shanghai 201900, China;School of Materials and Metallurgy, Northeastern University, Shanyang 110004, China 2. Technology Canter, Baosteel Co. Ltd., Shanghai 201900, China 3. School of Materials and Metallurgy, Northeastern University, Shanyang 110004, China |
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Abstract: | The scratch behaviors of two high speed steels (HSS) for hot rolls were studied by a Micro-combi Tester, and the emphasis was placed on researching the relations between the microstructure and the scratch resistance property of different HSS. The experimental results indicate that during the scratch process, the carbides are embedded into the matrix, the penetration depth of different HSS is closely related with the matrix hardness, i.e., the higher the matrix hardness, the better the scratch resistance property; and in the matrix, the fine, dispersive carbides are beneficial to form steady friction between the indenter and the scratched materials, but the coarser carbides are easier to fall into pieces. |
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Keywords: | high speed steel (HSS) scratch matrix carbide penetration depth |
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