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High-temp alloy of resisting high-temp oxygenation and resisting high-temp corrosion

A technology of high temperature corrosion resistance and high temperature oxidation resistance, applied in the field of alloys, can solve the problems of unsatisfactory high temperature oxidation resistance, low high temperature strength, low service temperature, etc., and achieve the effect of excellent high temperature oxidation resistance and high high temperature strength

Inactive Publication Date: 2006-05-24
CHONGQING MATERIALS RES INST
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

At present, relatively successful high-temperature alloys at home and abroad, such as Alloy 214 (USA) and 3И747 (Russia), can be used at 1200-1300 °C and have excellent high-temperature oxidation resistance. However, the service temperature of these alloys is not high, and the maximum service temperature Only 1300°C, the high temperature oxidation resistance is not ideal, and the high temperature strength is very low, and it is not resistant to high temperature corrosion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Alloy ingots produced according to the chemical composition weight percentage of C 0.02%, Si 0.5%, Mn 0.5%, Ni 45%, Cr 17%, Al 4.5%, Y 0.1%, and the balance Fe are hot-worked and cold-worked into alloy materials, It is used in the production of high-temperature anti-oxidation, high-temperature corrosion-resistant thermocouple protection tubes, etc.

Embodiment 2

[0026] Alloy ingots produced according to the chemical composition weight percentage of C 0.02%, Si 0.5%, Mn 0.8%, Ni 45%, Cr 17.5%, Al 4.2%, Y 0.15%, and the balance Fe are hot-worked and cold-worked into alloy materials, It is used in the production of high-temperature molds, high-temperature fixtures, high-temperature anti-oxidation, high-temperature corrosion-resistant thermocouple protection tubes, etc.

[0027] The combination of various elements of the alloy and its matching ratio make the alloy have the following main properties.

[0028] (1) The maximum service temperature of the alloy is 1350°C, and the maximum temperature for long-term use is 1300°C.

[0029] (2) High temperature oxidation resistance, the static engineering oxidation corrosion rate R of the alloy in air medium is:

[0030] At 1100℃, R≤0.006~0.01mm / a;

[0031] At 1300℃, R≤0.05~0.1mm / a;

[0032] At 1350°C, R≤0.14~0.2mm / a.

[0033] See Table 1 for the comparison of high temperature oxidation resist...

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Abstract

The invention discloses high temperature alloy that is anti high temperature oxidation and high temperature corrosion. It contains the chemical constituents of C less than 0.08%, Si less than 0.8%, Mn less than 0.8%, Ni 40-50%, Cr 14-20%, Al 13.8-7.5%, Y less than 0.3% and the rest is Fe. The highest usable temperature of the alloy is 1350 degree centigrade, and it has wonderful anti high temperature oxidation capability and high temperature corrosion capability. Moreover, it could take cool or heat modification process.

Description

technical field [0001] The invention relates to an alloy, in particular to a high-temperature oxidation-resistant and high-temperature corrosion-resistant high-temperature alloy. Background technique [0002] The usual superalloys refer to metal structural materials used at very high temperatures. They have certain high-temperature strength, high-temperature fatigue strength, high-temperature durability, high-temperature creep resistance, and high-temperature stress-relaxation resistance. The performance of this superalloy Requirements focus on high-temperature comprehensive performance and high-temperature strength. [0003] High-temperature alloys for special purposes are required in many fields, such as thermocouple temperature measurement protection tubes, high-temperature molds, high-temperature fixtures, glass industry, etc. At this time, high-temperature alloys are required to have special functions. The first option is that the alloy has a high service temperature an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/40
Inventor 黄进峰王陆洲张前发万红付小容诸吉生魏捍东
Owner CHONGQING MATERIALS RES INST
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