Solution-Aged TiB/TC4 Composite

Synergistic Strength–Ductility Boost

Solution and aging treatment reconstructs the microstructure, precipitating reinforcing TiB while reducing dislocation density to achieve simultaneous strength and ductility enhancement.

Runkai, Guo · Shuting, Fu · Jingshi, Zhang · Zhang, Huijing · Zhu, Weiwei · Han, Ying · Ran, Xu

Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing 2026

Specifications

Yield strength

{'zh': '1202.5', 'en': '1202.5'} MPa

Elongation

{'zh': '9.9', 'en': '9.9'} %

Advantages

Simultaneous strength-ductility improvement

Solution treatment eliminates acicular martensite and reduces dislocation density, while aging precipitates reinforcing TiB, resulting in a yield strength of 1202.5 MPa with an elongation of 9.9%.

Eliminates martensitic structure

Solution treatment promotes the decomposition of the original acicular α′ martensite into an α+β dual-phase structure, significantly reducing dislocation density and low-angle grain boundary ratio, thereby improving ductility.

TiB precipitation strengthening

Aging induces substantial precipitation of the TiB phase, strengthening the material through precipitation hardening.

Applications

• Additively Manufactured Titanium Alloys：Offers an as-printed alternative with high strength and ductility for load-bearing components.
• LPBF Metal Powders：Provides an optimized heat treatment for LPBF to fully exploit powder material potential.
• Aerospace Structural Materials：Meets damage-tolerance requirements for aerospace structures via high strength and ductility.
• Metal Matrix Composites：Optimizes MMC performance by controlling TiB reinforcement distribution through heat treatment.