The influence of severe plastic deformation on the thermal expansion of additively manufactured Ti6Al4V alloy

Journal of Materials Research and Technology

Zdeněk Drozd¹  Ján Džugan²  Kristýna Halmešová³  Zuzanka Trojanová³  Ruslan Z. Valiev³  Pavel Podaný⁴ 

[1] Corresponding author.;Charles University, Faculty of Mathematics and Physics, Ke Karlovu 3, 121 16 Praha 2, Czech Republic;Comtes FHT, Průmyslová 995, 334 41 Dobřany, Czech Republic;Institute for Physics of Advanced Materials, Ufa State Aviation Technical University (USATU), Karl Marx Str. 12, Ufa, 450000, Russia;

关键词: Additive manufacturing;    Ti6Al4V Grade5 alloy;    ECAP process;    Thermal expansion;    Dynamic recrystallization;   

DOI  :  

来源: DOAJ

【 摘 要 】

The thermal expansion properties of the Ti6Al4V alloy deposited with direct energy subjected to severe plastic deformation through ECAP were studied in the temperature region 23–700 °C. The deposit samples exhibited two orientations: with the longitudinal axis in the deposition plane and perpendicular to the deposited layers. The microstructure of the deposited alloy and the alloy after thermomechanical treatment was analysed on a scanning electron microscope using the EBSD method. The ECAP process substantially refined the structure of the grains. The temperature dependence of the thermal expansion coefficient estimated for the alloy after ECAP processing exhibited a non-monotonous course. The microstructural changes are the reason for this finding.

【 授权许可】

Unknown