Page 72 - ESAM-1-4

Engineering Science in
Additive Manufacturing EST manipulates structure of Ti-6Al-4V/Cu

A E

B F

C G

D H

Figure 8. Texture distributions of α and β phases. (A) α phase EST-0; (B) α phase EST-1; (C) α phase EST-2; (D) α phase EST-3, (E) β phase EST-0; (F) β
phase EST-1; (G) β phase EST-2; (H) β phase EST-3.
Abbreviation: EST: Electroshock treatment.

A B C

E
D

Figure 9. Changes in hardness and mechanical properties. (A) EST-1 microhardness distribution; (B) EST-2 microhardness distribution; (C) EST-3
microhardness distribution; (D) microhardness; (E) shear stress-strain.
Abbreviation: EST: Electroshock treatment.
tests. Figure 9A-D display the microhardness of the achieving a maximum increase of 30%, though this
Ti-6Al-4V coating and the Cu-Cr-Zr substrate. In the growth was relatively smaller compared to the Ti-6Al-4V
EST-0 sample, the microhardness of the Ti-6Al-4V coating. The hardness enhancement in post-EST samples
coating was 355 HV, while that of the Cu-Cr-Zr substrate is attributed to the formation of CuTi and Ti Cu during
2
was 90 HV. Following EST treatment, the microhardness EST. The Cu-Ti intermetallic compound exhibits higher
of the Ti-6Al-4V coating exhibited a pronounced upward hardness, and the precipitation of CuTi and Ti Cu acts as a
2
trend, with a maximum increase of approximately 70%. diffusion strengthening mechanism, thereby significantly
The Cu-Cr-Zr substrate also showed an upward trend, enhancing hardness.

Volume 1 Issue 4 (2025) 11 doi: 10.36922/ESAM025430030