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A technology of titanium alloy and disc-shaped parts, applied in the field of forging, can solve the problem that BT25 alloy can not meet the needs of use
Inactive Publication Date: 2014-03-26
AVIC EXCELLENCE FORGING WUXI
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Problems solved by technology
[0005] However, the invention is still based on BT25 alloy, which is a traditional alloy. Although its performance is excellent, with the development of technology and the improvement of aero-engine performan
Method used
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Embodiment 1
[0014] A titanium alloy for forging aerospace discs, the titanium alloy is composed of the following components in terms of weight percentage: Al: 5.20%, Mo: 4.50%, Zr: 0.80%, Sn: 2.50%, W: 0.70%, Si : 0.25%, Fe: 0.05%, C: 0.20%, Cr: 0.10%, O: ≤0.15%, N: ≤0.04%, H: ≤0.012%, Cu: ≤0.10%, and the balance is Ti.
Embodiment 2
[0016] A titanium alloy for forging aerospace discs, the titanium alloy is composed of the following components in weight percentage: Al: 5.80%, Mo: 3.50%, Zr: 2.50%, Sn: 0.80%, W: 1.50%, Si : 0.10%, Fe: 0.10%, C: 0.15%, Cr: 0.20%, O: ≤0.15%, N: ≤0.04%, H: ≤0.012%, Cu: ≤0.10%, and the balance is Ti.
Embodiment 3
[0018] A titanium alloy for forging aerospace discs, the titanium alloy is composed of the following components in terms of weight percentage: Al: 5.40%, Mo: 4.20%, Zr: 1.30%, Sn: 2.00%, W: 1.00%, Si : 0.20%, Fe: 0.07%, C: 0.18%, Cr: 0.13%, O: ≤0.15%, N: ≤0.04%, H: ≤0.012%, Cu: ≤0.10%, and the balance is Ti.
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Abstract
The invention discloses a titanium alloy for forging an aviation disc piece. The titanium alloy comprises the following components in percentage by weight: 5.20-5.80% of Al, 3.50-4.50% of Mo, 0.80-2.50% of Zr, 0.80-2.50% of Sn, 0.70-1.50% of W, 0.10-0.25% of Si, 0.05-0.10% of Fe, 0.15-0.20% of C, 0.10-0.20% of Cr, less than or equal to 0.15% of O, less than or equal to 0.04% of N, less than or equal to 0.012% of H, less than or equal to 0.10% of Cu and the balance of Ti.
Description
technical field [0001] The invention relates to a forging method, in particular to a titanium alloy for forging an aerospace disc. Background technique [0002] Due to the harsh working environment and complex stress, the compressor discs and turbine discs of aero-engines are often forged with α+β two-phase titanium alloys with excellent comprehensive properties, such as TC17 and BT25. The disc forged with α+β type titanium alloy has a series of advantages such as high strength, good fracture toughness, high hardenability and wide forging temperature range, which can meet the needs of damage tolerance design and high structure and high reliability. The requirements of high performance and low manufacturing cost, and these excellent comprehensive properties must be guaranteed by the ideal microstructure of forgings. In terms of the forging method of the two-phase titanium alloy, the Chinese invention patent specification CN1403622A published on March 19, 2003 discloses a tit...
Claims
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