Microstructural heterogeneity and property variations in cast and vacuum hot-pressed CoCrPtB alloy
Limited research has been undertaken regarding the homogeneity of CoCrPtB alloy billets. A CoCrPtB alloy was processed through casting and vacuum hot pressing. This investigation delved into the interconnection between the secondary dendrite arm spacing (SDAS) in the as-hot-pressed samples and their...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Online Access: | https://hdl.handle.net/10356/178338 |
| _version_ | 1826125620430503936 |
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| author | Li, Yan Guan, Weiming Wen, Ming Guo, Junmei Chen, Ze Wang, Chuanjun |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Li, Yan Guan, Weiming Wen, Ming Guo, Junmei Chen, Ze Wang, Chuanjun |
| author_sort | Li, Yan |
| collection | NTU |
| description | Limited research has been undertaken regarding the homogeneity of CoCrPtB alloy billets. A CoCrPtB alloy was processed through casting and vacuum hot pressing. This investigation delved into the interconnection between the secondary dendrite arm spacing (SDAS) in the as-hot-pressed samples and their corresponding attributes, specifically Vickers hardness and magnetic properties. Systematic sampling was conducted on the cross-sectional layer and longitudinal surface. Upon examination of the cross-sectional layer proximate to the uppermost region of the hot casting, a discernible parabolic trend was observed for the SDAS that exhibited a gradual increment from the peripheral regions toward the central area along the width. Simultaneously, the fraction of the dendrite phase displayed a consistent linear decline, attaining its peak value at the central portion of the billet. Conversely, on the longitudinal surface, SDAS and the fraction of the dendrite phase remained fairly uniform within the same column sampling regions. However, a notable divergence was identified in the central section, characterized by an augmented SDAS and diminished dendrite phase content. This inherent microstructural inhomogeneity within the CoCrPtB alloy engendered discernible disparities in material properties. |
| first_indexed | 2024-10-01T06:39:40Z |
| format | Journal Article |
| id | ntu-10356/178338 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:39:40Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1783382024-06-15T16:48:15Z Microstructural heterogeneity and property variations in cast and vacuum hot-pressed CoCrPtB alloy Li, Yan Guan, Weiming Wen, Ming Guo, Junmei Chen, Ze Wang, Chuanjun School of Mechanical and Aerospace Engineering Engineering Vacuum hot pressing Secondary dendrite arm spacing Limited research has been undertaken regarding the homogeneity of CoCrPtB alloy billets. A CoCrPtB alloy was processed through casting and vacuum hot pressing. This investigation delved into the interconnection between the secondary dendrite arm spacing (SDAS) in the as-hot-pressed samples and their corresponding attributes, specifically Vickers hardness and magnetic properties. Systematic sampling was conducted on the cross-sectional layer and longitudinal surface. Upon examination of the cross-sectional layer proximate to the uppermost region of the hot casting, a discernible parabolic trend was observed for the SDAS that exhibited a gradual increment from the peripheral regions toward the central area along the width. Simultaneously, the fraction of the dendrite phase displayed a consistent linear decline, attaining its peak value at the central portion of the billet. Conversely, on the longitudinal surface, SDAS and the fraction of the dendrite phase remained fairly uniform within the same column sampling regions. However, a notable divergence was identified in the central section, characterized by an augmented SDAS and diminished dendrite phase content. This inherent microstructural inhomogeneity within the CoCrPtB alloy engendered discernible disparities in material properties. Published version This research was funded by the Yunnan Key Research and Development Program, grant numbers 202102AB080008 and 202102AB080005; Scientific and Technological Project of Yunnan Precious Metals Laboratory, grant number YPML-2023050207; Yunnan Development and Reform Commission Ten Thousand Talents Plan for Leading Industrial Technology Talents, Ming Wen, the Innovation Talents Project of Yunnan Province, grant number 202005AD160029. 2024-06-12T04:14:08Z 2024-06-12T04:14:08Z 2024 Journal Article Li, Y., Guan, W., Wen, M., Guo, J., Chen, Z. & Wang, C. (2024). Microstructural heterogeneity and property variations in cast and vacuum hot-pressed CoCrPtB alloy. Materials, 17(3), 544-. https://dx.doi.org/10.3390/ma17030544 1996-1944 https://hdl.handle.net/10356/178338 10.3390/ma17030544 38591381 2-s2.0-85184707446 3 17 544 en Materials © 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/). application/pdf |
| spellingShingle | Engineering Vacuum hot pressing Secondary dendrite arm spacing Li, Yan Guan, Weiming Wen, Ming Guo, Junmei Chen, Ze Wang, Chuanjun Microstructural heterogeneity and property variations in cast and vacuum hot-pressed CoCrPtB alloy |
| title | Microstructural heterogeneity and property variations in cast and vacuum hot-pressed CoCrPtB alloy |
| title_full | Microstructural heterogeneity and property variations in cast and vacuum hot-pressed CoCrPtB alloy |
| title_fullStr | Microstructural heterogeneity and property variations in cast and vacuum hot-pressed CoCrPtB alloy |
| title_full_unstemmed | Microstructural heterogeneity and property variations in cast and vacuum hot-pressed CoCrPtB alloy |
| title_short | Microstructural heterogeneity and property variations in cast and vacuum hot-pressed CoCrPtB alloy |
| title_sort | microstructural heterogeneity and property variations in cast and vacuum hot pressed cocrptb alloy |
| topic | Engineering Vacuum hot pressing Secondary dendrite arm spacing |
| url | https://hdl.handle.net/10356/178338 |
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