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TiNi alloy multi-functional composite heat treatment method

A composite heat treatment and multi-functional technology, applied in the multi-functional integrated heat treatment field of TiNi alloy, can solve the problem of single performance of TiNi alloy, and achieve the effect of good comprehensive performance, good multi-functional integration and good shape memory effect.

Inactive Publication Date: 2010-03-17
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the single performance of the TiNi alloy treated by the existing heat treatment method, the present invention provides a composite heat treatment method for TiNi alloy with multifunctional integration

Method used

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  • TiNi alloy multi-functional composite heat treatment method
  • TiNi alloy multi-functional composite heat treatment method

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specific Embodiment approach 1

[0012] Specific Embodiment 1: In this embodiment, the multifunctional integrated composite heat treatment method of TiNi alloy is carried out according to the following steps: 1. Put the TiNi alloy into cryogenic equipment for cryogenic treatment, control the cryogenic temperature to 5-15°C, and cold deform The amount is 15% to 25%; 2. Put the TiNi alloy after cryogenic treatment into the heat preservation equipment for medium temperature annealing, and keep it at 400-500°C for 0.5-1.5h; 3. Put the TiNi alloy into the aging furnace after annealing Perform constrained aging treatment, control the constrained stress to 180-220MPa, and age at 450-550°C for 0.5-1.5h; that is, the multifunctional integration of TiNi alloy is realized.

[0013] The model of the TiNi alloy used in this embodiment is TA1-TA10.

specific Embodiment approach 2

[0014] Embodiment 2: This embodiment differs from Embodiment 1 in that: in step 1, the temperature is 7-13° C., and the cold deformation is 18%-22%. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0015] Embodiment 3: This embodiment is different from Embodiment 1 in that: in step 1, the temperature is 10° C., and the cold deformation is 20%. Other steps and parameters are the same as those in Embodiment 1.

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Abstract

The invention discloses a composite heat treatment method for multifunctional integration of a TiNi alloy and relates to a heat treatment method for the multifunctional integration of the TiNi alloy.The method solves the problem that the TiNi alloy treated by the prior heat treatment method has single performance. The method is carried out according to the following steps: 1. subzero treatment; 2. intermediate temperate annealing; and 3. aging restriction treatment, thereby realizing the multifunctional integration of the TiNi alloy. The TiNi alloy treated by the composite heat treatment method has good shape memory effect, good hyperelastic performance and excellent damping behavior; and with the composite heat treatment method, the TiNi alloy has good performance of multifunctional integration.

Description

technical field [0001] The invention relates to a multifunctional integrated heat treatment method for TiNi alloy. Background technique [0002] TiNi alloy has unique shape memory characteristics, superelastic behavior and excellent damping behavior. Connectors, fasteners and damping elements made of TiNi alloy are widely used in aerospace and other structures, and their applications can be effectively Simplify structure, reduce weight, improve performance, safety and reliability. At present, the TiNi alloy components that have been used in aerospace structures in my country mainly use a single function of TiNi alloy, such as memory effect or superelasticity. With the deepening of research and the promotion of applications, the load-sharing connection and high damping vibration reduction in aerospace structures require TiNi alloys to have multiple functions. TiNi alloys with only a single function can no longer meet the needs of aerospace structures for smart materials. Ur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/16
Inventor 蔡伟高智勇隋解和吴冶
Owner HARBIN INST OF TECH
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