Diffusion multi-section technology-based ODS alloy component design method

A technology of alloy composition and design method, applied in the field of ODS alloy composition design, can solve problems such as low efficiency of composition design, and achieve the effects of reducing preparation cycle, improving efficiency and improving performance

Pending Publication Date: 2022-05-17
CENT SOUTH UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problem of low design efficiency of existing ODS alloys, especially ODS alloy

Method used

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  • Diffusion multi-section technology-based ODS alloy component design method
  • Diffusion multi-section technology-based ODS alloy component design method
  • Diffusion multi-section technology-based ODS alloy component design method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Example 1 Ti, Al, Zr, Si in Y 2 o 3 Interdiffusion in Dispersion Strengthened Steel and Effects of Ti and Al on Oxide Disperse Phase Size and Number Density in Oxide Dispersion Strengthened Steel

[0051] Step 1: Prepare Fe-Cr-Y by ball milling for more than 24 hours and spark plasma sintering 2 o 3 -X (X=Ti, Al, Zr, Si) four kinds of ODS steel body units, of which Fe-Cr-Y 2 o 3 The composition ratio of each unit is consistent, the sintering temperature is 850°C, the pressure is 50MPa, and the holding time is 10min;

[0052] Step 2: Since the investigated elements include four types, according to figure 1 The assembly method is assembled into the bag, and the ODS steel blank body unit is wire-cut, polished, cleaned and assembled according to this assembly method;

[0053] Step 3: Use vacuum electron beam welding to seal the sheath, and then use hot isostatic pressing to ensure that the alloy units are in close contact. The welding depth of vacuum electron beam we...

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Abstract

The invention belongs to the field of oxide dispersion strengthened alloys, and adopts a diffusion multi-section technology to guide the ODS alloy component design. The method comprises the steps of ODS alloy blank unit component design and preparation, blank polishing, diffusion multi-section design and assembly, vacuum packaging, hot isostatic pressing machining forming and long-time diffusion annealing at the high temperature, and ODS alloys with different components meeting different working conditions can be obtained at a time. The method is easy to implement, efficient, rapid and capable of obtaining the ODS alloy with multiple different components at the same time, the research and development speed can be shortened, the research and development cost can be reduced, and the method has important significance on component design and development of the ODS alloy.

Description

technical field [0001] The invention discloses an ODS alloy composition design method using the diffusion multi-section technology, and belongs to the field of oxide dispersion strengthened alloys. Background technique [0002] The history of ODS alloy can be traced back to the preparation of thoriated tungsten wire in 1916. Compared with the traditional alloy without oxide dispersed phase, its oxide dispersed phase can be pinned to hinder dislocation movement and affect the nucleation and growth of matrix grains. , so that the strength and high temperature creep properties of the material can be improved. Not only that, the oxide disperse phase particles can also make radiation damage such as helium bubbles and cavities relatively evenly distributed on the interface between the oxide disperse phase particles and the matrix, so that large helium bubbles and large cavities cannot be formed, and the overall resistance of the material is improved. Radiation capacity. Therefor...

Claims

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Application Information

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IPC IPC(8): B22F3/105B22F3/15B22F3/24C22C32/00C22C1/05C22C33/02C21D1/26C21D1/18
CPCB22F3/105B22F3/15B22F3/24C22C32/0026C22C1/05C22C33/0228C21D1/26C21D1/18B22F2003/1051B22F2003/248Y02E30/30
Inventor 蔡格梅吴庆霄
Owner CENT SOUTH UNIV
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