Microstructural Evolution and Competing Deformation Mechanisms in Aerospace Titanium Alloys: A Review
Xin Xie1, Yisong Peng1, Weihe Xu1
1School of Materials Science and Engineering, Shenyang Aerospace University, Shenyang 110136, China.
Materials (Basel, Switzerland)
|July 15, 2026
Summary
This review details advances in aerospace titanium alloys, focusing on composition, microstructure, and properties. It proposes a framework for designing alloys with enhanced performance for aerospace applications.
Area of Science:
- Materials Science
- Metallurgy
- Aerospace Engineering
Background:
- Aerospace components demand materials with high specific strength, fatigue resistance, and environmental adaptability.
- Titanium alloys are crucial for aerospace due to their exceptional mechanical properties, enhanced by heat treatment.
- Understanding microstructure-property relationships is key to optimizing titanium alloy performance.
Purpose of the Study:
- To systematically review recent advances in aerospace titanium alloys.
- To highlight the effects of alloying elements and microstructures on alloy properties.
- To propose a framework for predictive alloy design.
Main Methods:
- Systematic literature review of compositional design and microstructural evolution.
- Analysis of microstructure-property relationships in aerospace titanium alloys.
- Assessment of deformation and phase-transformation mechanisms.
Main Results:
- Alloying elements influence phase stability, dislocation behavior, and transformation pathways.
- Lamellar, equiaxed, and bimodal microstructures regulate deformation and damage.
- Interactions among slip, twinning, and phase transformations are critical.
- Challenges remain in characterizing multi-mechanism coupling and heterogeneity.
Conclusions:
- A high-precision digital composition-microstructure-property mapping framework is proposed.
- This framework facilitates predictive and service-oriented alloy design for aerospace.
- Further research is needed to quantitatively characterize complex deformation mechanisms.
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