Directionally-Dependent Mechanical Properties of Ti6Al4V Manufactured by Electron Beam Melting (EBM) and Selective Laser Melting (SLM)
| Autor: | Ben Jackson, Omri Yannay, Cho-Pei Jiang, Benny Tavlovich, Celine Turangi, Yuji Sato, Mike Fry, Jia-Chang Wang, Yuan Tao, Tim Pasang, Masahiro Tsukamoto, Wojciech Z. Misiolek |
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| Rok vydání: | 2021 |
| Předmět: |
Technology
Materials science Alloy 02 engineering and technology engineering.material 01 natural sciences Article 0103 physical sciences Ultimate tensile strength General Materials Science Composite material Selective laser melting Ductility 010302 applied physics Acicular Microscopy QC120-168.85 electron beam melting wrought alloy QH201-278.5 Titanium alloy 021001 nanoscience & nanotechnology Microstructure Engineering (General). Civil engineering (General) TK1-9971 Descriptive and experimental mechanics Martensite selective laser melting engineering Electrical engineering. Electronics. Nuclear engineering TA1-2040 0210 nano-technology additive manufacturing |
| Zdroj: | Materials Volume 14 Issue 13 Materials, Vol 14, Iss 3603, p 3603 (2021) |
| ISSN: | 1996-1944 |
| Popis: | An investigation of mechanical properties of Ti6Al4V produced by additive manufacturing (AM) in the as-printed condition have been conducted and compared with wrought alloys. The AM samples were built by Selective Laser Melting (SLM) and Electron Beam Melting (EBM) in 0°, 45° and 90°—relative to horizontal direction. Similarly, the wrought samples were also cut and tested in the same directions relative to the plate rolling direction. The microstructures of the samples were significantly different on all samples. α′ martensite was observed on the SLM, acicular α on EBM and combination of both on the wrought alloy. EBM samples had higher surface roughness (Ra) compared with both SLM and wrought alloy. SLM samples were comparatively harder than wrought alloy and EBM. Tensile strength of the wrought alloy was higher in all directions except for 45°, where SLM samples showed higher strength than both EBM and wrought alloy on that direction. The ductility of the wrought alloy was consistently higher than both SLM and EBM indicated by clear necking feature on the wrought alloy samples. Dimples were observed on all fracture surfaces. |
| Databáze: | OpenAIRE |
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