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A kind of heat treatment method of solid solution aerobic tizrval alloy

A heat treatment method and alloy technology, which is applied in the field of heat treatment of TiZrVAl alloy, can solve the problems of easy size growth, uneven distribution, affecting the uniformity of alloy structure and performance, and comprehensive mechanical properties.

Active Publication Date: 2020-04-03
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Luo Junting, Zhao Bojun, etc. found that the TiZrVAl alloy with solid solution and aerobic oxygen will precipitate δ'-ZrO free dendrites inside the alloy during the high-temperature semi-molten compression treatment at 1600 °C, and the δ'-ZrO dendrites The size is easy to grow and the distribution is uneven, resulting in uneven structure and affecting the uniformity and comprehensive mechanical properties of the alloy structure and properties

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  • A kind of heat treatment method of solid solution aerobic tizrval alloy
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  • A kind of heat treatment method of solid solution aerobic tizrval alloy

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Embodiment 1

[0030] The present embodiment provides a kind of heat treatment method of solid solution aerobic TiZrVAl alloy, which comprises:

[0031] The molar ratio of solid dissolved oxygen is 7.4%, the TiZrVAl cylindrical alloy with a diameter of 20mm and a height of 30mm is put into the above-mentioned graphite mold, and its energy spectrum analysis diagram is as follows figure 2 As shown, the assembled alloy and the mold are placed in the spark plasma sintering machine as a whole, the upper pressure head goes down to apply a pressure of 10 MPa to the alloy, and then vacuumize to 10 -3 Below Pa, use the upper indenter, the lower indenter and the energized electrode to apply a specific sintering power supply and pressing pressure on the TiZrVAl cylinder, and apply a 1000A pulse current to make the plasma generated by the pulse current cause the ion discharge inside the alloy to generate heat. The alloy is heated up rapidly to 900°C, and after holding for 10 minutes, the pulse current o...

Embodiment 2

[0034] The present embodiment provides a kind of heat treatment method of solid solution aerobic TiZrVAl alloy, which comprises:

[0035] Put the TiZrVAl cylindrical alloy with a molar ratio of 7.4% of solid dissolved oxygen, a diameter of 20 mm, and a height of 30 mm into the above-mentioned graphite mold, place the assembled alloy and the mold in a spark plasma sintering machine, and the upper pressure head moves downward to The alloy is subjected to a pressure of 10MPa, and then vacuumed to 10 -3 Below Pa, use the upper indenter, the lower indenter and the energized electrode to apply a specific sintering power supply and pressing pressure on the TiZrVAl cylinder, and apply a 1000A pulse current to make the plasma generated by the pulse current cause the ion discharge inside the alloy to generate heat. The temperature of the alloy is raised to 900°C rapidly, and a pulse current of 3000-5000A is continued to be applied after holding the temperature for 10 minutes. When the ...

Embodiment 3

[0038] The present embodiment provides a kind of heat treatment method of solid solution aerobic TiZrVAl alloy, which comprises:

[0039] Put the TiZrVAl cylindrical alloy with a molar ratio of 7.4% of solid dissolved oxygen, a diameter of 20 mm, and a height of 30 mm into the above-mentioned graphite mold, place the assembled alloy and the mold in a spark plasma sintering machine, and the upper pressure head moves downward to The alloy is subjected to a pressure of 10MPa, and then vacuumed to 10 -3Below Pa, use the upper indenter, the lower indenter and the energized electrode to apply a specific sintering power supply and pressing pressure on the TiZrVAl cylinder, and apply a 1000A pulse current to make the plasma generated by the pulse current cause the ion discharge inside the alloy to generate heat. The temperature of the alloy is raised to 900°C rapidly, and a pulse current of 3000-5000A is continued to be applied after holding the temperature for 10 minutes. When the t...

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Abstract

The invention provides a heat treatment method of a solid solution aerobic TiZrVAl alloy. The method comprises the following steps of putting the TiZrVAl alloy with solid solution aerobic atoms into amold, carrying out electric field and pressure-assisted high-temperature semi-molten state compression on the material in the mold, loading pulse current, heating the TiZrVAl alloy to 800-1000 DEG C,preserving the heat for 8-12 min, then continuing to load pulse current, heating the TiZrVAl alloy to 1450 DEG C, making the temperature of the TiZrVAl alloy fluctuate between 1400-1450 DEG C for 5-15 times, and powering off to naturally cool. The heat treatment method enables the size of delta'-ZrO separated from the TiZrVAl alloy to be small, and uniform distribution is realized at the same time, so that the uniformity and the comprehensive mechanical property of the alloy structure are improved.

Description

technical field [0001] The invention relates to a processing method for an alloy, in particular to a heat treatment method for a TiZrVAl alloy with solid solution and oxygen. Background technique [0002] Zirconium alloy is a high-quality nuclear radiation-resistant material that has been tested for a long time. It has the potential to resist radiation damage; it also has excellent corrosion resistance and has the potential to resist atomic oxygen erosion; its expansion coefficient is small, and its structure and size are stable. Precision components with potential for resistance to alternating temperatures and precision machining. The TiZrVAl quaternary zirconium alloy not only has good plasticity, but also has high strength. It is one of the zirconium alloy varieties that develop rapidly in the field of structural materials. [0003] Liu Riping, Liang Shunxing and others first synthesized TiZrVAl alloy, and conducted in-depth research on the properties of the material in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/18
CPCC22F1/186
Inventor 骆俊廷薛浩张丽丽王昊天张春祥刘日平
Owner YANSHAN UNIV