| Autor: |
YU Shunshi, CHEN Song, LI Guanghui, LI Hui, LIN Yan, LI Hongfeng, DAI Siyuan, WU Tizhen, WANG Weiguo |
| Jazyk: |
čínština |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Cailiao gongcheng, Vol 52, Iss 7, Pp 204-213 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
1001-4381 |
| DOI: |
10.11868/j.issn.1001-4381.2023.000110 |
| Popis: |
Electron backscatter diffraction， five parameter analysis， overlap-pole-figure analysis and near coincident site analysis were used to investigate the interface character distributions of WC/WC grain boundaries and WC/Co phase boundaries in WC/Co cemented carbides under different heat treatment states. The results show that the WC/WC Σ2 grain boundaries with a fraction of 4.5% are generated in the oil-quenched sample after high temperature sintering. The fraction of Σ2 boundaries with interface matching features of ｛101¯0｝/｛101¯0｝ is 2.6%.The cobalt in this sample is basically face-centered-cubic structure， and the interface with the interface inter-connection features of ｛101¯0｝WC/｛001｝Co，｛101¯0｝WC/｛110｝Co and ｛112¯0｝WC/｛110｝Co is the main part of the WC/Co phase boundary. After tempering at 800 ℃， the samples with atmosphere protection and slow cooling in the furnace have the proportion and characteristics of WC/WC Σ2 grain boundaries， which are very close to those of oil-quenched samples.The cobalt in this sample is primarily hexagonal structure， and the interface with the interface inter-connection features of ｛101¯0｝WC/｛101¯0｝Co and ｛112¯0｝WC/｛112¯0｝Co is the main part of the WC/Co phase boundary. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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