Processing-microstructure-properties relationship of high entropy alloys fabricated by 3-dimensional printing
Selective Electron Beam Melting (SEBM) of an equiatomic, pre-alloyed and gas atomized CoCrFeMnNi high-entropy alloy (HEA) powder was studied, with the focus put on the process window, resulting microstructure and mechanical properties. The printed samples achieved a relative density up to 98% and ma...
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| Other Authors: | |
| Format: | Final Year Project (FYP) |
| Language: | English |
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2018
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| Online Access: | http://hdl.handle.net/10356/74777 |
| _version_ | 1826121831179878400 |
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| author | Huang, Pengfei |
| author2 | Dong Zhili |
| author_facet | Dong Zhili Huang, Pengfei |
| author_sort | Huang, Pengfei |
| collection | NTU |
| description | Selective Electron Beam Melting (SEBM) of an equiatomic, pre-alloyed and gas atomized CoCrFeMnNi high-entropy alloy (HEA) powder was studied, with the focus put on the process window, resulting microstructure and mechanical properties. The printed samples achieved a relative density up to 98% and mainly consist of FCC phase. Columnar microstructure was observed alone the build direction and cellular sub-microstructure was observed at the cross-section. The mechanical properties characterization results showed that this HEA exhibits excellent ductility with fracture strain up to 72% along build direction. Moreover, anisotropic tensile properties were observed, this could be contributed by the long columnar grains. Thus, in the transverse direction, a sharp drop of elongation occurred. |
| first_indexed | 2024-10-01T05:38:37Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/74777 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:38:37Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/747772023-03-04T15:40:55Z Processing-microstructure-properties relationship of high entropy alloys fabricated by 3-dimensional printing Huang, Pengfei Dong Zhili School of Materials Science and Engineering A*STAR SIMTech Wang Pan DRNTU::Engineering Selective Electron Beam Melting (SEBM) of an equiatomic, pre-alloyed and gas atomized CoCrFeMnNi high-entropy alloy (HEA) powder was studied, with the focus put on the process window, resulting microstructure and mechanical properties. The printed samples achieved a relative density up to 98% and mainly consist of FCC phase. Columnar microstructure was observed alone the build direction and cellular sub-microstructure was observed at the cross-section. The mechanical properties characterization results showed that this HEA exhibits excellent ductility with fracture strain up to 72% along build direction. Moreover, anisotropic tensile properties were observed, this could be contributed by the long columnar grains. Thus, in the transverse direction, a sharp drop of elongation occurred. Bachelor of Engineering (Materials Engineering) 2018-05-24T02:01:45Z 2018-05-24T02:01:45Z 2018 Final Year Project (FYP) http://hdl.handle.net/10356/74777 en Nanyang Technological University 50 p. application/pdf |
| spellingShingle | DRNTU::Engineering Huang, Pengfei Processing-microstructure-properties relationship of high entropy alloys fabricated by 3-dimensional printing |
| title | Processing-microstructure-properties relationship of high entropy alloys fabricated by 3-dimensional printing |
| title_full | Processing-microstructure-properties relationship of high entropy alloys fabricated by 3-dimensional printing |
| title_fullStr | Processing-microstructure-properties relationship of high entropy alloys fabricated by 3-dimensional printing |
| title_full_unstemmed | Processing-microstructure-properties relationship of high entropy alloys fabricated by 3-dimensional printing |
| title_short | Processing-microstructure-properties relationship of high entropy alloys fabricated by 3-dimensional printing |
| title_sort | processing microstructure properties relationship of high entropy alloys fabricated by 3 dimensional printing |
| topic | DRNTU::Engineering |
| url | http://hdl.handle.net/10356/74777 |
| work_keys_str_mv | AT huangpengfei processingmicrostructurepropertiesrelationshipofhighentropyalloysfabricatedby3dimensionalprinting |