.png){kind=icon}
.png){kind=icon}
Return
Achieving synergy of high strength and low elastic modulus in a high-oxygen dual-phase titanium alloy via coordinated deformation
.png){kind=icon}
PRE
AI
Y
W
J
L
樊
F
C
W
DOI：10.1016/j.scriptamat.2026.117380.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Developing biomedical titanium alloys with low modulus, high strength and ductility remains challenging for orthopedic implants. Conventional α+β alloys (e.g., Ti-6Al-4V) offer high strength and ductility but exhibit elastic modulus (∼110 GPa) far exceeding that of bone, causing stress shielding. Here, we process a Ti-19Nb-0.6O (wt.%) alloy by hot rolling followed by post-solution treatment to achieve controlled α precipitation. This modulates elemental partitioning and the structural stability of residual β matrix, forming a multimodal αp+α′+α″ microstructure. The coordinated deformation among these phases yields an initial Young’s modulus of 79 GPa, which gradually decreases to an average modulus of 53 GPa during elastic loading, along with a tensile strength of 925 MPa and 23% elongation. Compared with Ti-6Al-4V ELI (O ≤ 0.13 wt.%), Ti-19Nb-0.6O alloy exhibits higher ductility and 50% lower modulus without sacrificing strength. This multi-mechanism strategy mitigates the traditional strength-ductility-modulus trade‑offs, providing a promising pathway for advanced orthopedic implants.
Keywords:
Ti-19Nb-0.6O alloy
low elastic modulus
high strength
ductility
coordinated deformation
Journal
IF:
5.6
Papers:
1.6W
Citations:
5.1W
Organization
Cited Papers