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RAFM steel and Cr-Ni stainless steel composite material and preparation method and application thereof

A composite material, stainless steel technology, applied in the direction of manufacturing tools, welding equipment, non-electric welding equipment, etc., can solve the problems of high manufacturing cost and increase the construction cost of nuclear fusion reactor, achieve good interface bonding quality, improve plastic toughness, processing technology simple effect

Active Publication Date: 2021-11-26
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

RFAM steel is mainly composed of Cr, W, Mo, Mn, Ta, Ni, Fe, Si and other alloy elements. Compared with 300 series austenitic stainless steel, the manufacturing cost is higher, and if it is used in large quantities in nuclear fusion reactor devices, it will greatly increase The cost of building a nuclear fusion reactor

Method used

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  • RAFM steel and Cr-Ni stainless steel composite material and preparation method and application thereof
  • RAFM steel and Cr-Ni stainless steel composite material and preparation method and application thereof
  • RAFM steel and Cr-Ni stainless steel composite material and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0036] Such as figure 1 As shown in (a) and 1(b), the circular RAFM steel and Cr-Ni stainless steel composite material prepared in this embodiment includes a first component body 11 and a second component body 12 . The outer diameter of the first component body 11 is φ210mm, the inner diameter is φ200mm, the thickness is 20mm, and the thickness of the countertop is 10mm. A lathe or milling machine is used to process the I-type welding groove on the first component body 11. The outer diameter of the second component body 12 is φ200mm, and the thickness is 10mm. The first component body 11 is made of 304L material, and the second component body 12 is made of RAFM material.

[0037] The method for preparing circular RAFM steel and Cr-Ni stainless steel composite material in this embodiment is as follows:

[0038] (1) Contact surface processing: Machining the contact surface of RAFM steel and austenitic stainless steel, processing I-type welding groove on the contact surface of ...

Embodiment 2

[0046] Such as figure 1As shown in (a) and 1(b), the circular RAFM steel and Cr-Ni stainless steel composite material prepared in this embodiment includes a first component body 11 and a second component body 12 . The outer diameter of the first component body 11 is φ210mm, the inner diameter is φ200mm, the thickness is 20mm, and the thickness of the countertop is 10mm. A lathe or milling machine is used to process the I-type welding groove on the first component body 11. The outer diameter of the second component body 12 is φ200mm, and the thickness is 10mm. The first component body 11 is made of 304L material, and the second component body 12 is made of RAFM material.

[0047] The method for preparing circular RAFM steel and Cr-Ni stainless steel composite material in this embodiment is as follows:

[0048] (1) Contact surface processing: Machining the contact surface of RAFM steel and austenitic stainless steel, processing I-type welding groove on the contact surface of a...

Embodiment 3

[0056] Such as figure 2 As shown in (a) and 2(b), the square RAFM steel and Cr-Ni stainless steel composite material prepared in this embodiment includes a third component body 21 and a fourth component body 22 . The size of the third component body 21 is 210×110mm, the thickness is 20mm, and the sinking is 10mm. The fillet of the third component body 21 should be ≥ 3mm. Use a lathe or milling machine to process I-type welding grooves on the third component body 21. The specification of the fourth component body 22 is 200×100 mm, and the thickness is 10 mm. The third component body 21 is made of 316L material, and the fourth component body material 22 is made of RAFM steel material.

[0057] The method that present embodiment prepares square RAFM steel and Cr-Ni stainless steel composite material is as follows:

[0058] (1) Contact surface processing: Machining the contact surface of RAFM steel and austenitic stainless steel, processing I-type welding groove on the contact s...

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Abstract

The invention discloses an RAFM steel and Cr-Ni stainless steel composite material. The material comprises an RAFM steel assembly and a Cr-Ni stainless steel assembly, and the circular or square RAFM steel and Cr-Ni stainless steel composite material can be obtained through contact surface machining, contact surface cleaning and drying, assembling and seal welding treatment, hot isostatic pressure diffusion welding, heat treatment and surface finish machining and drying treatment. According to the RAFM steel and Cr-Ni stainless steel composite material in the embodiment, when the hot isostatic pressure diffusion welding temperature is 900-1150 DEG C, the pressure is 50-200 MPa, the heat preservation time is 1-4 h, the quenching temperature is 1000-1150 DEG C, the quenching time is 0.5-2 h, the tempering temperature is 700-950 DEG C and the tempering time is 1-4 hours, the interface bonding quality of the composite material is relatively good, and the plasticity and toughness of the material can be improved.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a composite material of RAFM steel and Cr-Ni stainless steel, a preparation method and application thereof. Background technique [0002] Compared with austenitic stainless steel, low activation ferritic / martensitic steel (RAFM) steel has better performance in the application of fusion reactor structural materials, with good weldability and better radiation resistance Swelling performance, better thermal stress factor and better corrosion resistance to liquid metal, as well as a large amount of data on basic performance and radiation performance already available. Therefore, low-activation ferrite / martensitic steel is considered to be the preferred structural material for future fusion reactors. After decades of development, many countries including Europe, Japan, the United States and China have carried out a lot of research on RAFM steel, such as EUROFER97 in Europ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/18C21D6/00B23K15/00B23K20/02
CPCC21D1/18C21D6/004B23K15/0046B23K20/026C21D2211/008C21D2211/001Y02E30/10
Inventor 吴玉程沈旭朱晓勇
Owner HEFEI UNIV OF TECH