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http://hdl.handle.net/10397/94223
Title: | High-temperature mechanical behavior of ultra-coarse cemented carbide with grain strengthening | Authors: | Hu, H Liu, X Chen, J Lu, H Liu, C Wang, H Luan, J Jiao, Z Liu, Y Song, X |
Issue Date: | 30-Mar-2022 | Source: | Journal of materials science and technology (Brazil), 30 Mar. 2022, v. 104, p. 8-18 | Abstract: | Ultra-coarse grained cemented carbides are often used under conditions of concurrently applied stress and high temperature. Improvement of high-temperature mechanical performance of ultra-coarse grained cemented carbides is highly desirable but still a big challenge. In this study, it is proposed that the high-temperature compression strength of ultra-coarse cemented carbides can be enhanced by modulating hard matrix grains by activated TaC nanoparticles, through solid solution strengthening of Ta atoms. Based on the designed experiments and microstructural characterizations combined with finite element simulations, the grain morphology, stress distribution and dislocation configuration were studied in detail for ultra-coarse grained cemented carbides. The mechanisms of Ta dissolving in WC crystal and strengthening ultra-coarse grains through interaction with dislocations were disclosed from the atomic scale. This study opens a new perspective to modulate hard phases of cemented carbides for improving their high-temperature performance, which will be applicable to a variety of cermet and ceramic-based composite materials. | Keywords: | Dislocation motion High-temperature compressive behavior Strengthening of hard-phase grains Ultra-coarse cemented carbides |
Publisher: | Elsevier Editora Ltda | Journal: | Journal of materials science and technology (Brazil) | ISSN: | 2238-7854 | EISSN: | 2214-0697 | DOI: | 10.1016/j.jmst.2021.06.067 | Rights: | © 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. © 2022. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. The following publication Hu, H., Liu, X., Chen, J., Lu, H., Liu, C., Wang, H., Luan, J., Jiao, Z., Liu, Y., & Song, X. (2022). High-temperature mechanical behavior of ultra-coarse cemented carbide with grain strengthening. Journal of Materials Science & Technology, 104, 8-18 is available at https://dx.doi.org/10.1016/j.jmst.2021.06.067. |
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Jiao_High-Temperature_Mechanical_Behavior.pdf | Pre-Published version | 1.67 MB | Adobe PDF | View/Open |
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