TC17 Titanium Alloy Blisk β - Forging
1, Product Name:
Product Name: TC17 Titanium Alloy Whole Blade β Forging (TC17 Ti-5Al-2Sn-2Zr-4Mo-4Cr Blisk β - Forming)
Material: TC17 (Ti-5Al-2Sn-2Zr-4Mo-4Cr)
Outline dimensions: ≤Φ 1100mm × 350mm
Single piece weight: ≤ 600 kg
Standard: AMS 4995/Aircraft Engine Model Standard
Minimum order quantity: negotiable per piece
2, Product Introduction:
TC17 is a near beta type titanium alloy rich in beta stable elements, with a nominal composition of Ti-5Al-2Sn-2Zr-4Mo-4Cr and a maximum working temperature of 427 ℃. It is known for its high strength, high fracture toughness, and excellent hardenability. The integral blade disc is an advanced engine structural component that integrates blades and discs. TC17 integral blade disc forgings belong to one of the highest technical threshold categories in the titanium forging field, and only a few domestic enterprises have mass production capabilities. This product adopts the β hot forging process: the billet is heated above the β phase transition point, and the TC17 high hardenability is used to achieve the consistency of the microstructure between the core and edge of the large section forging. After forging, the β grain boundary α phase is refined by controlling the cooling rate, and then strengthened by the precipitation of secondary α phase through aging. The room temperature tensile strength of large-sized forgings (maximum cross-sectional thickness ≥ 160mm) should be ≥ 1120 MPa, elongation ≥ 6.5%, and low cycle fatigue cycles ≥ 11000 times. The product belongs to the key rotating parts of aviation engines, and each part needs to undergo comprehensive ultrasonic testing and mechanical performance anatomical verification.
3, Performance index parameters of TC17 titanium alloy integral blade forging
Material Standard: AMS 4995/Aircraft Engine Model Standard Remarks
Brand: TC17 (Ti-5Al-2Sn-2Zr-4Mo-4Cr)
Mechanical properties (β forging+aging state): Room temperature tensile strength: ≥ 1120 MPa elongation rate: ≥ 6.5% Low cycle fatigue: ≥ 11000 cycles. For large section forgings, the consistency of core and edge strength must be ensured.
4, Product application:
TC17 integral blade forgings are specifically designed for high-pressure compressor disks and fan disks in turbofan aircraft engines. The overall blade structure eliminates stress concentration and micro motion wear caused by traditional tenon connections, and is a key technological path for advanced aircraft engines to improve thrust to weight ratio. The end users of this forging are highly concentrated in aviation engine manufacturers and research institutes. The forging manufacturer needs to pass strict aviation engine quality system certification, and the product does not enter the general industrial market circulation. Apart from the aviation industry, TC17 has also had some exploratory applications in large fasteners and landing gear joints that require extremely high strength and hardenability, but it has not yet formed a large-scale market.
TEL:18309176299
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