In Situ CT Tensile Testing of an Additively Manufactured and Heat-Treated Metastable ß-Titanium Alloy (Ti-5Al-5Mo-5V-3Cr)
| Autor: | Axel Marquardt, Sina Daubner, Christoph Leyens, Lukas Stepien, Elena López, Julius Hendl, Frank Brückner |
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| Přispěvatelé: | Publica |
| Rok vydání: | 2021 |
| Předmět: |
In situ
Technology titanium alloy Materials science QH301-705.5 QC1-999 industrial computer tomography non-destructive-evaluation in situ tensile testing Ultimate tensile strength General Materials Science Biology (General) Composite material QD1-999 Instrumentation Tensile testing Fluid Flow and Transfer Processes Fusion Physics Process Chemistry and Technology General Engineering Titanium alloy materials characterisation Engineering (General). Civil engineering (General) Microstructure Computer Science Applications Chemistry Fracture (geology) Cathode ray electron beam powder bed fusion TA1-2040 process–structure–property relationship additive manufacturing |
| Zdroj: | Applied Sciences Volume 11 Issue 21 Applied Sciences, Vol 11, Iss 9875, p 9875 (2021) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app11219875 |
| Popis: | Additive manufacturing has been considered a suitable process for developing high-performance parts of medical or aerospace industries. The electron beam powder bed fusion process, EB-PBF, is a powder bed fusion process carried out in a vacuum, in which the parts are melted using a highly focused electron beam. The material class of metastable β-titanium alloys, and especially Ti-5Al-5Mo-5V-3Cr, show great potential for use as small and highly complex load-bearing parts. Specimens were additively manufactured with optimised process parameters and different heat treatments used in order to create tailored mechanical properties. These heat-treated specimens were analysed with regard to their microstructure (SEM) and their mechanical strength (tensile testing). Furthermore, in situ tensile tests, using a Deben CT5000 and a YXLON ff35 industrial µ-CT, were performed and failure-critical defects were detected, analysed and monitored. Experimental results indicate that, if EB-PBF-manufactured Ti-5553 is heat-treated differently, a variety of mechanical properties are possible. Regarding their fracture mechanisms, failure-critical defects can be detected at different stages of the tensile test and defect growth behaviour can be analysed. |
| Databáze: | OpenAIRE |
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