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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

MATERIALS CHARACTERIZATION

ISSN

1044-5803

e-ISSN

1873-4189

Svazek periodika

196

Číslo periodika v rámci svazku

FEB 2023

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

nestránkováno

Kód UT WoS článku

000920847100001

EID výsledku v databázi Scopus

2-s2.0-85146221499