Effects of deep cryogenic treatment on microstructure and properties of WC–11Co cemented carbides with various carbon contents
| Autor: | Yun-feng Tang, Chenhui Xie, Jiwu Huang, Li-ning Gu |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Physics::Instrumentation and Detectors Metallurgy Metals and Alloys chemistry.chemical_element Geotechnical Engineering and Engineering Geology Condensed Matter Physics Microstructure Grain size Carbide Condensed Matter::Materials Science Flexural strength chemistry Phase (matter) Materials Chemistry Cryogenic treatment Cobalt Carbon |
| Zdroj: | Transactions of Nonferrous Metals Society of China. 25:3023-3028 |
| ISSN: | 1003-6326 |
| DOI: | 10.1016/s1003-6326(15)63929-2 |
| Popis: | The effects of deep cryogenic treatment on the microstructure and properties of WC–11Co cemented carbides with various carbon contents were investigated. The results show that after deep cryogenic treatment, WC grains are refined into triangular prism with sound edges via the process of spheroidization, but WC grain size has no evident change compared with that of untreated alloys. The phase transformation of Co phase from α-Co (FCC) to ɛ-Co (HCP) is observed in the cryogenically treated alloys, which is attributed to the decrease of W solubility in the binder (Co). Deep cryogenic treatment enhances the hardness and bending strength of the alloys, while it has no significant effects on the density and cobalt magnetic performance. |
| Databáze: | OpenAIRE |
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