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High-toughness radiation-proof multi-element alloy and preparation method thereof

A multi-element, anti-radiation technology, applied in the field of low-temperature environment and anti-radiation environment, can solve the problems of complex operation, small ingot volume, small copper mold suction casting volume, etc., and achieve excellent performance and broad application prospects Effect

Active Publication Date: 2015-05-20
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The existing multi-element alloy preparation method mainly adopts the method of electric arc melting and copper mold suction casting, the quality of the obtained multi-element alloy ingot is below 50g, the ingot volume is small, and the volume of copper mold suction casting is also small, And the operation is complicated, which limits the future application range of multi-element alloys, which is not conducive to the development of large-scale industrial products in the future

Method used

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  • High-toughness radiation-proof multi-element alloy and preparation method thereof
  • High-toughness radiation-proof multi-element alloy and preparation method thereof
  • High-toughness radiation-proof multi-element alloy and preparation method thereof

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Embodiment 1

[0039] 1. alloy composition: the alloy composition of embodiment is Al 0.1 CoCrFeNi.

[0040] 2. The alloy melting method comprises the following steps:

[0041] Step 1: First design the atomic ratio expression of the alloy composition as Al 0.1 CoCrFeNi, then converted to mass ratio according to the atomic ratio;

[0042] Step 2: use sandpaper and grinder to remove the surface scale of metallurgical raw materials Al, Co, Cr, Fe and Ni with a purity of more than 99.9%, and use industrial ethanol to ultrasonically clean the raw metal, dry, and set aside;

[0043] Step 3: Precisely weigh and proportion the raw materials treated in step 2, with a total mass of 1.5kg to 5kg;

[0044] Step 4: Put the metal raw materials with a total mass of 1.5kg to 5kg into the water-cooled copper crucible from the upper cavity of the vacuum magnetic levitation melting furnace, and place the other raw materials in the cavity preset place;

[0045] Step 5: vacuumize the sample chamber of the va...

Embodiment 2

[0049] 1. alloy composition: the alloy composition of embodiment is Al 0.3 CoCrFeNi.

[0050] 2. The alloy melting method comprises the following steps:

[0051] Step 1: First design the atomic ratio expression of the alloy composition as Al 0.3 CoCrFeNi, then converted to mass ratio according to the atomic ratio;

[0052] Step 2: use sandpaper and grinder to remove the surface oxide scales of metallurgical raw materials Al, Co, Cr, Fe and Ni with a purity of more than 99.9%, and use industrial ethanol to ultrasonically clean the raw metal, dry, and set aside;

[0053] Step 3: Precisely weigh and proportion the raw materials treated in step 2, with a total mass of 1.5kg to 5kg;

[0054] Step 4: Put the metal raw materials with a total mass of 1.5kg to 5kg into the water-cooled copper crucible from the upper cavity of the vacuum magnetic levitation melting furnace, and place the other raw materials in the cavity preset place;

[0055] Step 5: vacuumize the sample chamber of...

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Abstract

The invention provides a high-toughness radiation-proof multi-element alloy and a preparation method thereof. The atomic-ratio expression of the prepared AlxMCrFeNi series multi-element alloy is AlxMCrFeNi, wherein x refers to the atomic ratio, and is greater than or equal to 0 and less than or equal to 50%, and M is any one of V, Mn and Co. The multi-element alloy is excellent in toughness and radiation resistance, and has no ductile-brittle transition temperature. At a room temperature, the impact energy is 294.34J, and the lower the temperature is, the higher the impact toughness is; within th-196 DEG C temperature zone of liquid nitrogen, the impact energy is 371.45J, and the impact toughness is improved by 360% in contrast with the impact toughness of TWIP steel and by 364% in contrast with the impact toughness of a nuclear-grade 316LN pure austenitic steel weld metal. When the irradiation dose is about 0-60dpa, the irradiation swelling rate of the multi-element alloy is 95.8% lower than the irradiation swelling rate of Fe-15Cr-20Ni stainless steel. The high-toughness radiation-proof multi-element alloy has wide application prospect on the aspects of low-temperature materials and irradiation-proof materials.

Description

technical field [0001] The invention relates to the fields of low-temperature environment and radiation-resistant environment, in particular to a high-toughness radiation-resistant multi-element alloy and a preparation method thereof. Background technique [0002] The selection of cryogenic storage tank materials for storing liquefied natural gas, hydrogen and oxygen at low temperature has always been an issue of concern in the industry. In addition, in some thermonuclear fusion experimental reactors, the coil box and the entire support system of the reactor also require ultra-low temperature materials. The limit service temperature of the coil box is -269°C, and the service temperature of other components is also below -150°C. At present, the 316LN stainless steel material mainly used in this extreme environment, according to the literature (Shu Runtao, Chen Fangyu. Research on ultra-low temperature performance of nuclear grade 316LN pure austenitic solid wire welding [J]. ...

Claims

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Application Information

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IPC IPC(8): C22C30/00C22C1/02
Inventor 张勇夏松钦刘石林均品吕昭平杨腾飞王艳丽王辉
Owner UNIV OF SCI & TECH BEIJING
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