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Ni-BASED SUPERALLOY WITH EXCELLENT OXIDIZATION RESISTANCE AND CREEP PROPERTY AND METHOD OF MANUFACTURING THE SAME

a superalloy and creep technology, applied in the field of ni-based superalloys, can solve the problems that alloys cannot exhibit good creep properties and good oxidization resistance, and achieve excellent oxidization resistance and creep properties, enhance creep properties, and reduce the amount of chromium

Inactive Publication Date: 2016-05-26
KOREA INST OF MACHINERY & MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a Ni-based superalloy with excellent resistance to oxidization and creep, suitable for use in energy and chemical plants under corrosive environments. By adjusting the alloy components and controlling the process conditions, the method can enhance both oxidization resistance and creep properties simultaneously. The manufactured superalloy exhibits excellent resistance even at high temperatures, making it ideal for use in high-performance energy and chemical plants.

Problems solved by technology

In addition, commercially available alloys have a problem in that the alloys cannot exhibit good creep properties and good oxidization resistance at the same time.

Method used

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  • Ni-BASED SUPERALLOY WITH EXCELLENT OXIDIZATION RESISTANCE AND CREEP PROPERTY AND METHOD OF MANUFACTURING THE SAME
  • Ni-BASED SUPERALLOY WITH EXCELLENT OXIDIZATION RESISTANCE AND CREEP PROPERTY AND METHOD OF MANUFACTURING THE SAME

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examples

[0080]Hereinafter, the present invention will be described with reference to some examples. However, these examples are given by way illustration only and should not be construed in any way as limiting the invention.

[0081]Descriptions of details apparent to those skilled in the art will be omitted herein.

[0082]1. Manufacture of Sample

[0083]Samples of Examples 1 to 11 and Comparative Examples 1 to 3 were prepared according to compositions as listed in Table 1 and process conditions as listed in Table 2.

TABLE 1(unit: wt %)CrWMoMnSiAlLaCBFeCoTiNiExample 1211420.70.20.20.020.10.015———Bal.Example 2261620.80.30.50.020.10.015———Bal.Example 3231440.10.50.20.020.10.015———Bal.Example 4211420.70.20.20.040.040.005———Bal.Example 5261620.80.30.50.020.160.005———Bal.Example 6231440.10.50.20.040.040.005———Bal.Example 7211420.70.20.50.020.10.015———Bal.Example 8211420.70.20.80.020.10.015———Bal.Example 9211420.70.50.20.020.10.015———Bal.Example 10211420.70.50.50.020.10.015———Bal.Example 11211420.70.50.8...

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Abstract

The present disclosure relates to a Ni-based superalloy with excellent oxidation resistance and creep properties, which is suitable for parts of energy plants and chemical plants under a corrosive oxidative / reductive atmosphere, which stainless steel cannot withstand, through adjustment of alloy components and control of process conditions and a method of manufacturing the same. The Ni-based superalloy includes: chromium (Cr): 20˜26 wt %, tungsten (W): 13˜17 wt %, molybdenum (Mo): 1˜5 wt %, manganese (Mn): 0.1˜1.0 wt %, silicon (Si): 0.1˜0.6 wt %, aluminum (Al): 0.1˜1.0 wt %, lanthanum (La): 0.01˜0.06 wt %, carbon (C): 0.01˜0.20 wt %, and the balance of nickel (Ni) and unavoidable impurities.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of Korean patent application no. 10-2014-0164756, filed on Nov. 24, 2014, entitled “Ni-BASED SUPERALLOY WITH EXCELLENT OXIDIZATION RESISTANCE AND CREEP PROPERTY AND METHOD OF MANUFACTURING THE SAME”, which is hereby incorporated by reference in its entirety into this application.BACKGROUND[0002]1. Technical Field[0003]The present invention relates to a Ni-based superalloy and a method of manufacturing the same, and more particularly, to a Ni-based superalloy with excellent oxidization resistance and creep properties, which is suitable for parts of energy plants and chemical plants under a corrosive oxidative / reductive atmosphere, which stainless steel cannot withstand, through adjustment of alloy components and control of process conditions, and a method of manufacturing the same.[0004]2. Description of the Related Art[0005]Superalloys refer to alloys which are mainly aimed at withstanding use at high te...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C22F1/10B21B3/00C22C19/05
CPCC22F1/10B21B3/00C22C19/055
Inventor JEONG, HI-WONYOO, YOUNG-SOOSEO, SEONG-MOONYUN, DAE-WON
Owner KOREA INST OF MACHINERY & MATERIALS
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