High temperature mechanical properties of HK40-type heat-resistant cast austenitic stainless steels

Yoon Jun Kim, Dong Geun Lee, Hyeon Kyeong Jeong, Yong Tai Lee, Ho Jang

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

This work characterized HK40-type, cast austenitic stainless steel, as the W content was varied from 0 to 3.6 wt.%. Analysis of microstructure using optical and scanning electron microscopies showed that the alloys contained relatively large amount of Cr-carbide, Nb-compound, and MnS at the austenite grain boundary. The addition of W promoted the formation of Cr-carbide and affected the high-temperature mechanical properties. According to tension tests carried out at room temperature, 400, 600, and 800 °C, the alloys became significantly stronger and brittle as W content increased. The low-cycle fatigue tests showed that fatigue resistance was also increased with Waddition, but an excessive amount of W decreased the fatigue resistance. The HK40-type alloys with 2.0 wt.% Wexhibited best high-temperature mechanical performances.

Original languageEnglish
Pages (from-to)700-704
Number of pages5
JournalJournal of Materials Engineering and Performance
Volume19
Issue number5
DOIs
Publication statusPublished - 2010 Jul 1

Fingerprint

Austenitic stainless steel
Fatigue of materials
Mechanical properties
Carbides
Austenite
Temperature
Grain boundaries
Microstructure
Scanning electron microscopy
Hot Temperature

Keywords

  • Heat resistant steels
  • Intermetallic phase
  • Low-cycle fatigue
  • Stainless steels
  • Tensile strength

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

High temperature mechanical properties of HK40-type heat-resistant cast austenitic stainless steels. / Kim, Yoon Jun; Lee, Dong Geun; Jeong, Hyeon Kyeong; Lee, Yong Tai; Jang, Ho.

In: Journal of Materials Engineering and Performance, Vol. 19, No. 5, 01.07.2010, p. 700-704.

Research output: Contribution to journalArticle

Kim, Yoon Jun ; Lee, Dong Geun ; Jeong, Hyeon Kyeong ; Lee, Yong Tai ; Jang, Ho. / High temperature mechanical properties of HK40-type heat-resistant cast austenitic stainless steels. In: Journal of Materials Engineering and Performance. 2010 ; Vol. 19, No. 5. pp. 700-704.
@article{ead82a73cd5a46d0b3b9531b367446c8,
title = "High temperature mechanical properties of HK40-type heat-resistant cast austenitic stainless steels",
abstract = "This work characterized HK40-type, cast austenitic stainless steel, as the W content was varied from 0 to 3.6 wt.{\%}. Analysis of microstructure using optical and scanning electron microscopies showed that the alloys contained relatively large amount of Cr-carbide, Nb-compound, and MnS at the austenite grain boundary. The addition of W promoted the formation of Cr-carbide and affected the high-temperature mechanical properties. According to tension tests carried out at room temperature, 400, 600, and 800 °C, the alloys became significantly stronger and brittle as W content increased. The low-cycle fatigue tests showed that fatigue resistance was also increased with Waddition, but an excessive amount of W decreased the fatigue resistance. The HK40-type alloys with 2.0 wt.{\%} Wexhibited best high-temperature mechanical performances.",
keywords = "Heat resistant steels, Intermetallic phase, Low-cycle fatigue, Stainless steels, Tensile strength",
author = "Kim, {Yoon Jun} and Lee, {Dong Geun} and Jeong, {Hyeon Kyeong} and Lee, {Yong Tai} and Ho Jang",
year = "2010",
month = "7",
day = "1",
doi = "10.1007/s11665-009-9550-3",
language = "English",
volume = "19",
pages = "700--704",
journal = "Journal of Materials Engineering and Performance",
issn = "1059-9495",
publisher = "Springer New York",
number = "5",

}

TY - JOUR

T1 - High temperature mechanical properties of HK40-type heat-resistant cast austenitic stainless steels

AU - Kim, Yoon Jun

AU - Lee, Dong Geun

AU - Jeong, Hyeon Kyeong

AU - Lee, Yong Tai

AU - Jang, Ho

PY - 2010/7/1

Y1 - 2010/7/1

N2 - This work characterized HK40-type, cast austenitic stainless steel, as the W content was varied from 0 to 3.6 wt.%. Analysis of microstructure using optical and scanning electron microscopies showed that the alloys contained relatively large amount of Cr-carbide, Nb-compound, and MnS at the austenite grain boundary. The addition of W promoted the formation of Cr-carbide and affected the high-temperature mechanical properties. According to tension tests carried out at room temperature, 400, 600, and 800 °C, the alloys became significantly stronger and brittle as W content increased. The low-cycle fatigue tests showed that fatigue resistance was also increased with Waddition, but an excessive amount of W decreased the fatigue resistance. The HK40-type alloys with 2.0 wt.% Wexhibited best high-temperature mechanical performances.

AB - This work characterized HK40-type, cast austenitic stainless steel, as the W content was varied from 0 to 3.6 wt.%. Analysis of microstructure using optical and scanning electron microscopies showed that the alloys contained relatively large amount of Cr-carbide, Nb-compound, and MnS at the austenite grain boundary. The addition of W promoted the formation of Cr-carbide and affected the high-temperature mechanical properties. According to tension tests carried out at room temperature, 400, 600, and 800 °C, the alloys became significantly stronger and brittle as W content increased. The low-cycle fatigue tests showed that fatigue resistance was also increased with Waddition, but an excessive amount of W decreased the fatigue resistance. The HK40-type alloys with 2.0 wt.% Wexhibited best high-temperature mechanical performances.

KW - Heat resistant steels

KW - Intermetallic phase

KW - Low-cycle fatigue

KW - Stainless steels

KW - Tensile strength

UR - http://www.scopus.com/inward/record.url?scp=77956395409&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77956395409&partnerID=8YFLogxK

U2 - 10.1007/s11665-009-9550-3

DO - 10.1007/s11665-009-9550-3

M3 - Article

AN - SCOPUS:77956395409

VL - 19

SP - 700

EP - 704

JO - Journal of Materials Engineering and Performance

JF - Journal of Materials Engineering and Performance

SN - 1059-9495

IS - 5

ER -