Effect of ECAP processing on microstructure and mechanical behaviour of Ti-6Al-4V manufactured by directed energy deposition

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F23%3AN0000021" target="_blank" >RIV/26316919:_____/23:N0000021 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/abs/pii/S1044580322009044" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S1044580322009044</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.matchar.2022.112622" target="_blank" >10.1016/j.matchar.2022.112622</a>

Result language
angličtina
Original language name
Effect of ECAP processing on microstructure and mechanical behaviour of Ti-6Al-4V manufactured by directed energy deposition
Original language description
Additive manufacturing (AM) is an innovative technology allowing faster and cheaper production of complex -shaped parts in comparison to conventional methods. On the other hand, equal channel angular pressing (ECAP), belonging to severe plastic deformation (SPD) methods, induces large amounts of strain and dislocations to the material, which cause its strengthening and densification. In this study, the unique combination of directed energy deposition (DED) and four-pass ECAP processing was investigated. The experimental material is DED-processed titanium alloy Ti-6Al-4 V in as-deposited and ECAP-ed states. The material in both states was sub-jected to microstructure investigation using light (LM) and scanning electron microscopy (SEM) with electron backscattered diffraction (EBSD), porosity and hardness measurement and mechanical testing, which included evaluation of tensile properties. The fracture surfaces of the specimens after testing were observed using SEM. The ECAP processing led to significant deformation of original grains and refinement of microstructure. In the case of ECAP-processed specimens, a significant improvement of mechanical properties in terms of strength and elongation was observed.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20301 - Mechanical engineering

Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)