Heat treatment method for improving titanium-nickel-chromium shape memory alloy superelasticity
A heat treatment method and memory alloy technology, which is applied in the field of alloy processing, can solve the problems of not specifically improving the superelasticity of titanium-nickel-chromium memory alloys, and achieve good plasticity, high driving force, and non-deformable effects
Inactive Publication Date: 2013-07-24
西安思维智能材料有限公司
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[0003] The purpose of the present invention is to provide a heat treatment method for improving the superelasticity of titanium-nickel-chromium shape mem
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[0022] Example 1
[0023] The titanium-nickel-chromium shape memory alloy was heated at 750°C for 30 minutes and then at 400°C for 5 minutes, and finally cooled with water.
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[0024] Example 2
[0025] The titanium-nickel-chromium shape memory alloy was heated at 750°C for 30 minutes and then at 400°C for 8 minutes, and finally cooled with water.
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[0026] Example 3
[0027] The titanium-nickel-chromium shape memory alloy was heated at 750°C for 30 minutes and then at 400°C for 12 minutes, and finally cooled with water.
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The invention discloses a heat treatment method for improving titanium-nickel-chromium shape memory alloy superelasticity. According to the invention, the titanium-nickel-chromium shape memory alloy is heated for 5-60min under a temperature of 700-800 DEG C, and is heated for 5-30min under a temperature of 350-450 DEG C; and cooling is carried out by using water or oil. With the heat treatment method for improving titanium-nickel-chromium shape memory alloy superelasticity, the titanium-nickel-chromium shape memory alloy is provided with the advantages of high driving force, good plasticity, deformation prevention, good fatigue resistance, large recoverable deformation, and stable performance. The treatment method is simple.
Description
technical field [0001] The invention relates to an alloy treatment method, in particular to a heat treatment method for improving the superelasticity of a titanium-nickel-chromium shape memory alloy. Background technique [0002] With the rapid development of shape memory alloys, titanium-nickel-based shape memory alloys have been widely used because of their excellent shape memory effect, superelasticity and good mechanical properties. In recent years, research on the shape memory properties of TiNiX ternary alloys has also achieved valuable results. Relevant literature points out that in order to make titanium-nickel memory alloy have better shape memory effect and superelasticity after processing, the following three methods are usually used for treatment: medium temperature treatment, low temperature treatment and heat treatment. Among them, medium temperature treatment and heat treatment can increase the critical stress of slip deformation, which is a method to obtain ...
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Login to view more IPC IPC(8): C22F1/18C22F1/10C22F1/00
Inventor 薛飒牛中杰雷亚军贾兵然于孟田成民胡琦
Owner 西安思维智能材料有限公司
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