High-temperature compression tests of Ti(C, N)–70 wt% W cermet and isothermal forging of Inconel 718 alloys using cermet molds
In this study, TiC0·5N0.5–70 wt% W cermet specimens consisting of a core–rim grain structure with coherent interfaces and the binder phase were prepared by blending TiC0·5N0.5 and W powders with particle sizes of less than 1 μm and then spark plasma sintering the blended powders. The compression tes...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-05-01
|
| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423009328 |
| _version_ | 1827920205986136064 |
|---|---|
| author | Takashi Murakami Masahito Katoh Daisuke Matsukura Kyosuke Yoshimi |
| author_facet | Takashi Murakami Masahito Katoh Daisuke Matsukura Kyosuke Yoshimi |
| author_sort | Takashi Murakami |
| collection | DOAJ |
| description | In this study, TiC0·5N0.5–70 wt% W cermet specimens consisting of a core–rim grain structure with coherent interfaces and the binder phase were prepared by blending TiC0·5N0.5 and W powders with particle sizes of less than 1 μm and then spark plasma sintering the blended powders. The compression tests of the cermet specimens were conducted in the temperature range of 1873 K–2073 K in a vacuum and under Ar gas flow conditions. At all testing temperatures, this cermet exhibited much higher yield stress than MoSiBTiC and MoNbTaVW high-entropy alloys, which are some of the structural materials showing the highest strength at temperatures exceeding 1873 K. After isothermal upset forging of commercially available solid-solution heat-treated Inconel 718 alloy specimens with a diameter of 5 mm and a height of 5 mm using cermet molds at loads of 40 kN and 10 kN at 1273 K and 1373 K in a vacuum, respectively, their average grain size (2 μm) was found to be much smaller than that before forging. Such fine microstructures were assumed to be formed by dynamic recrystallization during forging. |
| first_indexed | 2024-03-13T04:09:18Z |
| format | Article |
| id | doaj.art-5ccfde6ffd8043d5acbb1942b2d19482 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-13T04:09:18Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-5ccfde6ffd8043d5acbb1942b2d194822023-06-21T06:57:15ZengElsevierJournal of Materials Research and Technology2238-78542023-05-012465786587High-temperature compression tests of Ti(C, N)–70 wt% W cermet and isothermal forging of Inconel 718 alloys using cermet moldsTakashi Murakami0Masahito Katoh1Daisuke Matsukura2Kyosuke Yoshimi3Advanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8564, Japan; Corresponding author.Advanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305-8564, JapanDepartment of Materials Science and Engineering, School of Engineering, Tohoku University, Sendai, Miyagi, 980-8579, JapanDepartment of Materials Science and Engineering, School of Engineering, Tohoku University, Sendai, Miyagi, 980-8579, JapanIn this study, TiC0·5N0.5–70 wt% W cermet specimens consisting of a core–rim grain structure with coherent interfaces and the binder phase were prepared by blending TiC0·5N0.5 and W powders with particle sizes of less than 1 μm and then spark plasma sintering the blended powders. The compression tests of the cermet specimens were conducted in the temperature range of 1873 K–2073 K in a vacuum and under Ar gas flow conditions. At all testing temperatures, this cermet exhibited much higher yield stress than MoSiBTiC and MoNbTaVW high-entropy alloys, which are some of the structural materials showing the highest strength at temperatures exceeding 1873 K. After isothermal upset forging of commercially available solid-solution heat-treated Inconel 718 alloy specimens with a diameter of 5 mm and a height of 5 mm using cermet molds at loads of 40 kN and 10 kN at 1273 K and 1373 K in a vacuum, respectively, their average grain size (2 μm) was found to be much smaller than that before forging. Such fine microstructures were assumed to be formed by dynamic recrystallization during forging.http://www.sciencedirect.com/science/article/pii/S2238785423009328Cermet: high-temperature compression test: isothermal forging: Inconel 718Spark plasma sintering |
| spellingShingle | Takashi Murakami Masahito Katoh Daisuke Matsukura Kyosuke Yoshimi High-temperature compression tests of Ti(C, N)–70 wt% W cermet and isothermal forging of Inconel 718 alloys using cermet molds Journal of Materials Research and Technology Cermet: high-temperature compression test: isothermal forging: Inconel 718 Spark plasma sintering |
| title | High-temperature compression tests of Ti(C, N)–70 wt% W cermet and isothermal forging of Inconel 718 alloys using cermet molds |
| title_full | High-temperature compression tests of Ti(C, N)–70 wt% W cermet and isothermal forging of Inconel 718 alloys using cermet molds |
| title_fullStr | High-temperature compression tests of Ti(C, N)–70 wt% W cermet and isothermal forging of Inconel 718 alloys using cermet molds |
| title_full_unstemmed | High-temperature compression tests of Ti(C, N)–70 wt% W cermet and isothermal forging of Inconel 718 alloys using cermet molds |
| title_short | High-temperature compression tests of Ti(C, N)–70 wt% W cermet and isothermal forging of Inconel 718 alloys using cermet molds |
| title_sort | high temperature compression tests of ti c n 70 wt w cermet and isothermal forging of inconel 718 alloys using cermet molds |
| topic | Cermet: high-temperature compression test: isothermal forging: Inconel 718 Spark plasma sintering |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423009328 |
| work_keys_str_mv | AT takashimurakami hightemperaturecompressiontestsofticn70wtwcermetandisothermalforgingofinconel718alloysusingcermetmolds AT masahitokatoh hightemperaturecompressiontestsofticn70wtwcermetandisothermalforgingofinconel718alloysusingcermetmolds AT daisukematsukura hightemperaturecompressiontestsofticn70wtwcermetandisothermalforgingofinconel718alloysusingcermetmolds AT kyosukeyoshimi hightemperaturecompressiontestsofticn70wtwcermetandisothermalforgingofinconel718alloysusingcermetmolds |