Corrosion and cracking resistant high manganese austenitic steels containing passivating elements

A technology of alloying elements and alloy steels, applied in the field of high manganese austenitic steel composition, high manganese steel composition with corrosion resistance and/or crack resistance, can solve the problem of ductility loss, etc., and achieve improved corrosion resistance sexual effect

Inactive Publication Date: 2018-05-11
EXXON RES & ENG CO
View PDF11 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of these low-Ni steels show a strong increase in yield strength and severe damage associated with the precipitation of car

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
  • Corrosion and cracking resistant high manganese austenitic steels containing passivating elements
  • Corrosion and cracking resistant high manganese austenitic steels containing passivating elements
  • Corrosion and cracking resistant high manganese austenitic steels containing passivating elements

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0112] Exemplary alloys of the present disclosure were prepared by vacuum induction melting. Prior to melting, the nominal chemical composition of the steel composition was about 20% by weight Mn, about 18% by weight Cr, about 0.6% by weight C, about 0.4% by weight N, and the balance Fe. Iron-containing steel compositions were fabricated by vacuum induction melting in a controlled environment where evaporative losses of N and Mn were controlled to produce liquid alloy steels.

[0113] The liquid alloy steel was then poured into water-cooled Cu (copper) molds to form a homogeneous ingot (and at the same time suppress Mn segregation), and then cooled to about ambient temperature.

[0114] The ingot is then hot deformed at temperatures above about 800°C to control grain size and form the alloy steel into cylindrical rods.

[0115] Some rods were then reheated / solution heat treated at about 1200°C for about 1 hour to substantially dissolve the minor phase formed during heat defor...

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

No PUM Login to view more

Abstract

Improved steel compositions and methods of making the same are provided. The present disclosure provides advantageous corrosion and/or cracking resistant steel. More particularly, the present disclosure provides high manganese (Mn) steel compositions having enhanced corrosion and/or cracking resistance, and methods for fabricating high manganese steel compositions having enhanced corrosion and/orcracking resistance. Methods for fabricating high manganese steel compositions (e.g., via passivation) having enhanced corrosion and/or cracking resistance are also provided.

Description

technical field [0001] The present disclosure relates to improved steel compositions and methods of making the same, and more particularly to high manganese (Mn) austenitic steel compositions with enhanced corrosion resistance and / or cracking resistance and for the manufacture of Corrosion and / or cracking resistance of high manganese steel compositions (for example by passivation). Another object of the present disclosure is to provide equipment and components fabricated from such austenitic high Mn steels that can have high strength, improved resistance to sweet and sour corrosion, and resistance to environmentally induced cracking (including sulfide stress cracking and stress cracking). corrosion cracking) combination. Background technique [0002] Carbon steel is widely used as a structural material in the oil, gas and petrochemical industries. The upstream sector of these industries is a major user of structural materials, with the use of carbon steel accounting for ap...

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
IPC IPC(8): C22C38/58C22C38/02C22C38/20C22C38/22C22C38/24C22C38/26C22C38/28C22C38/30C22C38/32C22C38/34C22C38/38C22C38/42C22C38/44C22C38/46C22C38/48
CPCC21D1/28C22C37/08C22C38/001C22C38/04C22C38/20C22C38/22C22C38/24C22C38/26C22C38/28C22C38/30C22C38/32C22C38/34C22C38/38C22C38/40C21D6/002C21D8/0226C21D8/0236C21D8/0263C21D2211/004C21D6/004C21D6/005C21D6/007C21D6/008C21D8/005C21D2211/001C22C33/006C22C33/04C22C38/002C22C38/02C22C38/06C22C38/42C22C38/44C22C38/46C22C38/48C22C38/50C22C38/52C22C38/54C22C38/58C21D7/02C22C1/02C21D7/13
Inventor 陈炫佑林洵马宁
Owner EXXON RES & ENG CO
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