Elastic Moduli and Mechanical Properties of Mo<sub>5</sub>SiB<sub>2</sub> Single Crystals in the Mo-Si-B System
With outstanding high-temperature properties, the intermetallic Mo<sub>5</sub>SiB<sub>2</sub> alloy is regarded as an extremely competitive ultra-temperature structural material. The maximum Young’s modulus of 398.0 GPa for single Mo<sub>5</sub>SiB<sub>2<...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-11-01
|
| Series: | Crystals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4352/12/11/1577 |
| _version_ | 1797468679544242176 |
|---|---|
| author | Kunming Pan Chengyang Zhang Gaogao Dong Rui Wang Hua Yu Changji Wang Yongpeng Ren |
| author_facet | Kunming Pan Chengyang Zhang Gaogao Dong Rui Wang Hua Yu Changji Wang Yongpeng Ren |
| author_sort | Kunming Pan |
| collection | DOAJ |
| description | With outstanding high-temperature properties, the intermetallic Mo<sub>5</sub>SiB<sub>2</sub> alloy is regarded as an extremely competitive ultra-temperature structural material. The maximum Young’s modulus of 398.0 GPa for single Mo<sub>5</sub>SiB<sub>2</sub> crystals was found to be at the vertex of the [010] direction, while the minimum value of 264.0 GPa was found in the [001] direction. For hardness, the maximum value was 451.7 HV after compression at 1200 °C in the radial direction, while the maximum hardness was 437.2 HV at 1300 °C in the axial direction of {111}<110>, showing obvious anisotropy. Under compression, the flow stresses rapidly increased and then decreased with the increase in strain, corresponding to the two different stages of work hardening and softening. An EBSD test showed that the grain orientation remained the same at different rates, but the texture was different. After high-temperature compression, the crystal underwent plastic deformation, dislocations slipped along the slip plane, and the grain rotated, so the grain texture changed from {111}<110> to {001}<110>. |
| first_indexed | 2024-03-09T19:10:50Z |
| format | Article |
| id | doaj.art-f0c6de2cfb8849cd8a8fc7bc39cda337 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-09T19:10:50Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-f0c6de2cfb8849cd8a8fc7bc39cda3372023-11-24T04:15:32ZengMDPI AGCrystals2073-43522022-11-011211157710.3390/cryst12111577Elastic Moduli and Mechanical Properties of Mo<sub>5</sub>SiB<sub>2</sub> Single Crystals in the Mo-Si-B SystemKunming Pan0Chengyang Zhang1Gaogao Dong2Rui Wang3Hua Yu4Changji Wang5Yongpeng Ren6Henan Key Laboratory of High-Temperature Structural and Functional Materials, National Joint Engineering Research Center for Abrasion Control and Molding of Metal Materials, Henan University of Science and Technology, Luoyang 471023, ChinaHenan Key Laboratory of High-Temperature Structural and Functional Materials, National Joint Engineering Research Center for Abrasion Control and Molding of Metal Materials, Henan University of Science and Technology, Luoyang 471023, ChinaCHN Energy Mengjin Thermal Power Co., Ltd., Huayang Industrial Park, Mengjin District, Luoyang 471003, ChinaHenan Key Laboratory of High-Temperature Structural and Functional Materials, National Joint Engineering Research Center for Abrasion Control and Molding of Metal Materials, Henan University of Science and Technology, Luoyang 471023, ChinaHenan Key Laboratory of High-Temperature Structural and Functional Materials, National Joint Engineering Research Center for Abrasion Control and Molding of Metal Materials, Henan University of Science and Technology, Luoyang 471023, ChinaHenan Key Laboratory of High-Temperature Structural and Functional Materials, National Joint Engineering Research Center for Abrasion Control and Molding of Metal Materials, Henan University of Science and Technology, Luoyang 471023, ChinaAdvanced Materials Science Innovation Center, Longmen Laboratory, Luoyang 471023, ChinaWith outstanding high-temperature properties, the intermetallic Mo<sub>5</sub>SiB<sub>2</sub> alloy is regarded as an extremely competitive ultra-temperature structural material. The maximum Young’s modulus of 398.0 GPa for single Mo<sub>5</sub>SiB<sub>2</sub> crystals was found to be at the vertex of the [010] direction, while the minimum value of 264.0 GPa was found in the [001] direction. For hardness, the maximum value was 451.7 HV after compression at 1200 °C in the radial direction, while the maximum hardness was 437.2 HV at 1300 °C in the axial direction of {111}<110>, showing obvious anisotropy. Under compression, the flow stresses rapidly increased and then decreased with the increase in strain, corresponding to the two different stages of work hardening and softening. An EBSD test showed that the grain orientation remained the same at different rates, but the texture was different. After high-temperature compression, the crystal underwent plastic deformation, dislocations slipped along the slip plane, and the grain rotated, so the grain texture changed from {111}<110> to {001}<110>.https://www.mdpi.com/2073-4352/12/11/1577single crystalsMo<sub>5</sub>SiB<sub>2</sub>mechanical propertiesphysical moduli |
| spellingShingle | Kunming Pan Chengyang Zhang Gaogao Dong Rui Wang Hua Yu Changji Wang Yongpeng Ren Elastic Moduli and Mechanical Properties of Mo<sub>5</sub>SiB<sub>2</sub> Single Crystals in the Mo-Si-B System Crystals single crystals Mo<sub>5</sub>SiB<sub>2</sub> mechanical properties physical moduli |
| title | Elastic Moduli and Mechanical Properties of Mo<sub>5</sub>SiB<sub>2</sub> Single Crystals in the Mo-Si-B System |
| title_full | Elastic Moduli and Mechanical Properties of Mo<sub>5</sub>SiB<sub>2</sub> Single Crystals in the Mo-Si-B System |
| title_fullStr | Elastic Moduli and Mechanical Properties of Mo<sub>5</sub>SiB<sub>2</sub> Single Crystals in the Mo-Si-B System |
| title_full_unstemmed | Elastic Moduli and Mechanical Properties of Mo<sub>5</sub>SiB<sub>2</sub> Single Crystals in the Mo-Si-B System |
| title_short | Elastic Moduli and Mechanical Properties of Mo<sub>5</sub>SiB<sub>2</sub> Single Crystals in the Mo-Si-B System |
| title_sort | elastic moduli and mechanical properties of mo sub 5 sub sib sub 2 sub single crystals in the mo si b system |
| topic | single crystals Mo<sub>5</sub>SiB<sub>2</sub> mechanical properties physical moduli |
| url | https://www.mdpi.com/2073-4352/12/11/1577 |
| work_keys_str_mv | AT kunmingpan elasticmoduliandmechanicalpropertiesofmosub5subsibsub2subsinglecrystalsinthemosibsystem AT chengyangzhang elasticmoduliandmechanicalpropertiesofmosub5subsibsub2subsinglecrystalsinthemosibsystem AT gaogaodong elasticmoduliandmechanicalpropertiesofmosub5subsibsub2subsinglecrystalsinthemosibsystem AT ruiwang elasticmoduliandmechanicalpropertiesofmosub5subsibsub2subsinglecrystalsinthemosibsystem AT huayu elasticmoduliandmechanicalpropertiesofmosub5subsibsub2subsinglecrystalsinthemosibsystem AT changjiwang elasticmoduliandmechanicalpropertiesofmosub5subsibsub2subsinglecrystalsinthemosibsystem AT yongpengren elasticmoduliandmechanicalpropertiesofmosub5subsibsub2subsinglecrystalsinthemosibsystem |