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Heat-resisting alloy with high yield ratio, high toughness and long-run elasticity stability

A technology of elastic stability and heat-resistant alloys, applied in the field of alloys, can solve the problems of strength, toughness, elastic failure, aircraft machine failure, etc., and achieve the effect of improving the effect of grain boundary strengthening

Inactive Publication Date: 2011-04-27
CHONGQING MATERIALS RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If an aircraft fails in terms of strength, toughness, and elasticity due to the components made of its heat-resistant elastic alloy, it will cause the failure of the aircraft machine

Method used

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  • Heat-resisting alloy with high yield ratio, high toughness and long-run elasticity stability
  • Heat-resisting alloy with high yield ratio, high toughness and long-run elasticity stability
  • Heat-resisting alloy with high yield ratio, high toughness and long-run elasticity stability

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Effect test

Embodiment 1

[0053] A heat-resistant alloy with high yield ratio, high toughness, long-term elastic stability, characterized in that it consists of the following components in weight percentage: C 0.034, Si 0.4, Mn 1.04, Ni 27.5, Cr 16, Mo 1.4, Ti 3.05, Al 0.51 B 0.0033, Ca0.01, Mg0.01, the balance is Fe. The alloy ingots produced are hot-processed and cold-processed into wires, strips, rods, and pipes, which are used in various types of high-strength, high-toughness, long-term elastic stability, high-temperature resistance, and elasticity required by aviation, petrochemical, metallurgy, and electromechanical industries. element.

Embodiment 2

[0055] A heat-resistant alloy with high yield ratio, high toughness, long-term elastic stability, characterized in that it consists of the following components in weight percentage: C 0.024, Si 0.35, Mn 1.10, Ni 28, Cr 16.5, Mo 1.3, Ti 2.8, Al 0.4B 0.0033, Ca0.005, Mg0.005, the balance is Fe. The alloy ingots obtained by vacuum smelting and electroslag remelting double process are hot-processed and cold-processed into bars and forgings, which are used in high-strength heat-resistant rotors and heat-resistant forgings for power stations.

Embodiment 3

[0057] A heat-resistant alloy with high yield ratio, high toughness, long-term elastic stability, characterized in that it is composed of the following components in weight percentage: C 0.040, Si 0.35, Mn 1.10, Ni 28, Cr 16.5, Mo 1.3, Ti 2.8, Al 0.4 B 0.0033, Ca0.05, Mg0.05, the balance is Fe. The alloy is smelted by vacuum induction, and then the alloy ingot is obtained through the dual process of electroslag remelting. The hot working temperature of the alloy is 1160°C to 850°C. After thermal processing and cold processing, it is made into bars and forgings, which are used in high-strength heat-resistant rotors and heat-resistant forgings for power stations. During the cold working process, the alloy must be solution treated in time to eliminate cold work hardening. The solution treatment system is a holding temperature of 1080 ° C, a holding time of 30 to 60 minutes, and water quenching.

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Abstract

The invention discloses a heat-resisting alloy with high yield ratio, high toughness and long-run elasticity stability, which is characterized by comprising the following components in percentage by weight: less than or equal to 0.06 percent of C, less than or equal to 0.6 percent of Si, 0.8 to1.2 percent of Mn, 26.5 to 29.5 percent of Ni, 15.0 to 18.0 percent of Cr, 1.0 to 1.5 percent of Mo, 2.80 to 3.30 percent of Ti, less than or equal to 0.6 percent of Al, 0.003 to 0.006 percent of B, 0.005 to 0.05 percent of Ca, 0.005 to 0.05 percent of Mg, and the balance of Fe. In the new alloy, alloy elements are added on the basis of Fe-Cr-Ni, the high yield ratio and high toughness are achieved, and the long-run elasticity stability is kept; and by controlling a Ti / Al ratio, optimizing the microstructures of intermetallic compounds and regulating the contents of B, Mo and C, the grain boundary strengthening effect is improved. The new ally fills up a blank on the research of the alloy in China, and meets the property requirements on high yield ratio, high toughness and long-run elasticity stability of the conventional aero high-temperature alloy parts of China.

Description

technical field [0001] The invention relates to an alloy, in particular to a heat-resistant alloy with high yield ratio and high toughness and long-term elastic stability. Background technique [0002] Heat-resistant elastic alloy is a kind of high-temperature alloy, which refers to an alloy that can maintain sufficient strength, good oxidation resistance and elastic properties at high temperatures. Heat-resistant elastic alloys are of great significance for industrial sectors and application technologies that work under high temperature conditions. [0003] The initial development work began in the 1930s, and it was developed due to the need for more heat-resistant elastic element materials in aircraft construction. In the early 1940s, due to the urgent need for advanced gas turbine engine technology, the temperature of superalloys used in aircraft increased, so that heat-resistant elastic alloys were developed as needed. [0004] The research on heat-resistant elastic al...

Claims

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Application Information

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IPC IPC(8): C22C38/54
Inventor 张十庆李方王宏聂尊誉邹兴政唐锐赵光明刘庆宾
Owner CHONGQING MATERIALS RES INST
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