Large-sized ferrite ODS alloy sheet material with high aluminum content and preparation method thereof

A thin plate material and large-size technology, which is applied in metal material coating process, ion implantation plating, coating, etc., can solve the problem of inability to prepare large-size ferritic ODS alloy thin plate materials with high aluminum content, and achieve anti-oxidation Good performance, simple process and low process cost

Active Publication Date: 2014-07-30
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing method cannot prepare large-sized ferrite ODS alloy sheet materials with high aluminum content, and based on the technical improvement proposed by the existin

Method used

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  • Large-sized ferrite ODS alloy sheet material with high aluminum content and preparation method thereof
  • Large-sized ferrite ODS alloy sheet material with high aluminum content and preparation method thereof
  • Large-sized ferrite ODS alloy sheet material with high aluminum content and preparation method thereof

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specific Embodiment approach 1

[0020] Specific Embodiment 1: In this embodiment, the large-size ferritic ODS alloy sheet material with high aluminum content has a thickness of 0.01-0.3mm and a diameter of 1000mm, and the composition of the sheet is 15.0%-20.0%Cr, 10.0%-15.0 %Al, 0.3%-0.6%Y 2 o 3 And the composition of Fe in balance.

specific Embodiment approach 2

[0021] Specific embodiment two: the preparation method of the large-size high-aluminum content ferritic ODS alloy thin plate material described in specific embodiment one is carried out according to the following steps:

[0022] 1. Put the aluminum-containing ingot into a water-cooled copper crucible, place 35 grams of tungsten on the surface of the aluminum-containing ingot, put the yttrium oxide ceramic column or yttrium oxide powder into another water-cooled copper crucible, and place on the surface of the yttrium oxide ingot 10-15 grams of calcium fluoride, put the superalloy substrate on the substrate frame, wipe the surface with absolute ethanol, and evacuate to 1×10 -3 Pa-5×10 -3 Pa, then heat the superalloy substrate to 650-1000°C and keep it warm;

[0023] 2. Cover the superalloy substrate treated in step 1 with a baffle, increase the current of the two electron beams to 1.6-3A and 1.0-1.5A respectively, and stabilize it for 1-20min, open the baffle, On-chip deposit...

specific Embodiment approach 3

[0028] Specific embodiment three: the difference between this embodiment and specific embodiment two is that in step one, the vacuum is pumped to 3×10 -3 Pa. Others are the same as in the second embodiment.

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Abstract

The invention relates to a large-sized ferrite ODS alloy sheet material with high aluminum content and a preparation method thereof and aims to solve the problem that oxidation resistance and weldable performance of a metal laminate in a honeycomb structure of a thermal protection system cannot be taken into consideration. The material provided by the invention is 0.01-0.3mm thick, and the diameter is 1000mm. The sheet comprises the following components in percentage by mass: 15.0-20.2% of Cr, 10.0-15.0% of Al, 0.3-0.6% of Y2O3 and the balance of Fe. The preparation method comprises the following steps: putting an aluminum-containing ingot material in a water-cooling copper crucible, putting a yttrium oxide ceramic column or yttrium oxide powder in another water-cooling copper crucible, heating a high-temperature alloy substrate to 650-1000 DEG C and insulating; evaporating the aluminum-containing ingot material and the yttrium oxide ceramic ingot material or the yttrium oxide powder, and naturally cooling to 50 DEG C. The ferrite ODS alloy sheet material prepared by the method provided by the invention is high in aluminum content (10.0-15.0wt%) and good in oxidation resistance (oxidation increase in air for 100 hours at 1100 DEG C is not greater than 0.8mg/<cm2>. The invention belongs to the field of preparation of upper and lower laminate materials in the honeycomb structure of the thermal protection system.

Description

technical field [0001] The invention relates to a thin plate material and a preparation method thereof. Background technique [0002] Ferritic ODS alloy sheet materials are widely used in high temperature fields due to their excellent oxidation resistance and high temperature creep resistance. With the development of aerospace technology, especially the development of hypersonic vehicle technology, the requirements for heat-resistant materials and structures are getting higher and higher. High-temperature alloy sheet materials in high-Mach number aircraft need to withstand higher and higher temperatures, especially for high-temperature oxidation resistance of high-temperature alloy sheet materials. The original materials and technologies can no longer meet the needs of use. In order to meet the anti-oxidation requirements of existing iron-based superalloy materials, the aluminum content in the materials is generally increased. However, the increase in aluminum content will...

Claims

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Application Information

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IPC IPC(8): C22C38/18C23C14/30C23C14/06C23C14/08C23C14/16
Inventor 宋广平林秀李明伟曾岗孙跃何飞赫晓东赵轶杰赵淑媛钟业盛
Owner HARBIN INST OF TECH
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