一种双向梯度组织的高强韧钛合金及制备方法
By employing heated water cooling and laser shock strengthening techniques, axial and radial gradient microstructures of titanium alloys are constructed, solving the problem of weak gradient nanolayers on the surface of titanium alloys. This significantly improves the fatigue performance of overall titanium alloy structural components, making them suitable for key components in aerospace vehicles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XIAN UNIV OF TECH
- Filing Date
- 2024-07-24
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies cannot significantly increase the thickness and volume fraction of the gradient nanolayer on the surface of titanium alloys, resulting in a lack of significant strength improvement in gradient nanostructure materials and an inability to effectively enhance the resistance to surface fatigue crack initiation in overall titanium alloy structural components.
By heating a portion of the titanium alloy to the β single-phase region and water-cooling it, followed by aging treatment, and combining it with surface laser shock osmosis strengthening technology, an axial and radial gradient microstructure is constructed, forming a deep hardened layer and a compressive stress layer, which significantly improves the fatigue performance of the material.
It significantly improves the resistance to fatigue crack initiation on the surface of integral titanium alloy structural components, enhances the fatigue life and safety stability of the components, and maintains high strength and toughness, making it suitable for key structural components of aircraft.
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Figure CN118910524B_ABST