A preparation method for forging forming of a near-β-type titanium alloy forging with high strength and high toughness

A high-strength, high-toughness, titanium alloy technology, applied in metal processing equipment and other directions, can solve the problems of near-β-type titanium alloy forgings that are difficult to match in strength and plasticity, difficult to obtain homogeneous fine ternary structure, and low fracture toughness and fatigue resistance. , to achieve the effects of stable and controllable quality, promotion of tissue uniformity, and high strength and plasticity matching.
CN111438317BActive Publication Date: 2021-11-30HARBIN INST OF TECH AT WEIHAI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HARBIN INST OF TECH AT WEIHAI
Publication Date
2021-11-30

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Abstract

The invention discloses a preparation method for forging and forming of a nearly β-type titanium alloy forging with high strength and high toughness, including: 1. blank forging in β phase zone; 2. quasi-β forging, upsetting and drawing thermal deformation; 1. Repeated upsetting and drawing thermal deformation near β forging; 5. Water cooling quenching for final forging; 6. Solution aging treatment. The near-beta titanium alloy forging produced by the invention has good mechanical properties, high strong-plastic matching, stable and controllable quality, and can meet the urgent demand for high-performance near-beta titanium alloy forgings in the manufacture of aerospace titanium alloy load-bearing components.
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Description

technical field

[0001] The invention belongs to the field of nonferrous metal processing, and in particular relates to a preparation method for forging and forming of a near-beta titanium alloy forging with high strength and high toughness. Background technique

[0002] Near β-type high-strength and high-toughness titanium alloy, which has the characteristics of both α+β-type titanium alloy and β-type titanium alloy, has high strength, good toughness, fatigue resistance, good strength and toughness matching, and does not produce Obvious composition segregation, good hardenability and wide range of thermal processing technology, especially suitable for aerospace parts such as fuselage frame, landing gear, wing and pylon connection device that bear huge stress.

[0003] The microstructure characteristics of titanium alloy forgings are closely related to the comprehensive mechanical properties of forgings. Near β-type titanium alloys, the main strengthening method is the dispe...

Claims

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