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
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0012]The Ni-based superalloy with excellent oxidization resistance and creep properties and the method of manufacturing the same according to the present invention can enhance creep properties by lowering the amounts of chromium (Cr) and silicon (Si), and improve oxidization resistance by excluding Fe while increasing the amount of manganese (Mn), thereby improving oxidization resistance and creep properties at the same time.
[0013]In addition, the Ni-based superalloy manufactured by the method according to the present invention exhibits excellent oxidization resistance and creep properties even at a high temperature of 700° C. or more through adjustment of alloy components and control of process conditions, and thus is suitable for parts of energy plants and chemical plants under a corrosive oxidative / reductive atmosphere, which stainless steel cannot withstand.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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
  • Ni-BASED SUPERALLOY WITH EXCELLENT OXIDIZATION RESISTANCE AND CREEP PROPERTY AND METHOD OF MANUFACTURING THE SAME

Examples

Experimental program
Comparison scheme
Effect test

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
elongationaaaaaaaaaa
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to view more

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap