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Preparation method of NiTiVNd memory alloy hot rolling panel

A technology of memory alloys and plates, applied in the field of memory alloys, can solve problems such as no patent publications, and achieve good mechanical properties and excellent memory effects

Inactive Publication Date: 2013-10-16
ZHENJIANG YINUOWEI SHAPE MEMORY ALLOYS
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Preparation method of NiTiVNd memory alloy hot rolling panel

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Embodiment Construction

[0009] Hot rolling is carried out on a billet with a size of 60mm×70mm×300mm at a rolling temperature of 920°C to 700°C.

[0010] The plate hot rolling process is as follows: thickness × width

[0011] Thickness 60mm×width 70mm-thickness 42mm×width 110mm, rolling temperature is 920°C-870°C; solid solution temperature is 850°C-830°C, water quenching after holding for 50-60min, low-temperature aging temperature is 150°C-250°C, Keep warm for 20-30 minutes.

[0012] Thickness 42mm×width 110mm-thickness 26mm×width 135mm, rolling temperature is 870°C-820°C; solid solution temperature is 830°C-810°C, water quenching after holding for 50-60min, low-temperature aging temperature is 150°C-250°C, Keep warm for 20-30 minutes.

[0013] Thickness 26mm×width 135mm-thickness 15mm×width 155mm, rolling temperature is 820°C-780°C; solid solution temperature is 810°C-790°C, water quenching after holding for 50-60min, low-temperature aging temperature is 150°C-250°C, Keep warm for 20-30 minutes...

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Abstract

A preparation method of a NiTiVNd memory alloy hot rolling panel belongs to the technical field of memory alloy and is characterized by conducting homogenizing annealing on prepared NiTiVNd memory alloy ingot casting blanks at the temperature of 920 DEG C for 12h, removing an oxide skin and dead heads by using a linear cutting method, heating to 900 DEG C-920 DEG C, conducting one-time pressing on a 500T oil pressure machine to form 60mm*70mm*300mm blanks, then conducting hot rolling at the rolling temperature of 920 DEG C-700 DEG C, conducting repeated solid solution treatment and low temperature aging treatment in a hot rolling process at the solid solution temperature of 850 DEG C-750 DEG C, conducting heat preservation for 50-60min, then conducting water quenching, enabling the low temperature aging temperature to be 150 DEG C-250 DEG C, and conducting heat preservation for 20-30min. The final size after rolling is as follows: the thickness is 1mm, the width is 200mm and the length is variable, then, annealing treatment is carried out at the annealing temperature of 750 DEG C-800 DEG C, and heat is preserved for 4h.

Description

technical field [0001] The invention belongs to the technical field of memory alloys, in particular to a method for preparing NiTiVNd memory alloy hot-rolled plates. Background technique [0002] NiTi memory alloy is a new type of metal functional material with excellent memory effect, so it is an ideal functional material in the engineering field. However, the binary NiTi memory alloy can no longer meet the application requirements in the engineering field. One is that the phase transition of the binary NiTi memory alloy has a large lag (30°C), and the other is that the end temperature of the reverse phase transformation is high. Increasing the Ni content can reduce the end temperature of the reverse phase transformation. , but the processing performance is greatly reduced. For the application of the superelasticity of the memory alloy in the engineering field, it is required that the reverse phase transformation end temperature (Af) of the memory alloy is below -15°C, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/10C22F1/00
Inventor 齐克尧李晓薇司松海张志敏陆松华张扣山
Owner ZHENJIANG YINUOWEI SHAPE MEMORY ALLOYS
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