LOW-TEMPERATURE TOUGHNESS OF 6%Mn STEELS.

Masato Murakami, Koji Shibata, Toshio Fujita

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Fe-Mn alloys have microstructures similar to those of Fe-Ni alloys in iron-rich regions; therefore they have potentials as structural materials at cryogenic temperatures. Fe-Mn alloys, however, lose their toughness by catastrophic intergranular failure when tested at low temperatures. This is attributed to the segregation of impurities to grain boundaries. The segregation can take place at higher temperatures than 600 degree C, in both austenite( gamma ) and two-phase( alpha plus gamma ) regions. An addition of molybdenum has been found to be effective in reducing the segregation of phosphorus in the two-phase region and enhancing toughness. However, no perceivable difference was observed in segregation in the gamma field. Double temper has been also identified as a beneficial treatment for improving toughness, which promoted the reversion of austenite along grain boundaries and reduced the susceptibility to intergranular failure.

Original languageEnglish
Pages (from-to)241-248
Number of pages8
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume72
Issue number2
Publication statusPublished - 1986 Feb
Externally publishedYes

Fingerprint

toughness
Toughness
Austenite
Grain boundaries
austenite
Molybdenum
grain boundaries
Cryogenics
Temperature
Phosphorus
cryogenic temperature
Iron
Impurities
molybdenum
phosphorus
Microstructure
magnetic permeability
iron
impurities
microstructure

ASJC Scopus subject areas

  • Metals and Alloys

Cite this

LOW-TEMPERATURE TOUGHNESS OF 6%Mn STEELS. / Murakami, Masato; Shibata, Koji; Fujita, Toshio.

In: Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan, Vol. 72, No. 2, 02.1986, p. 241-248.

Research output: Contribution to journalArticle

@article{c0cddb313d754e49a4e05fc3a92461fb,
title = "LOW-TEMPERATURE TOUGHNESS OF 6{\%}Mn STEELS.",
abstract = "Fe-Mn alloys have microstructures similar to those of Fe-Ni alloys in iron-rich regions; therefore they have potentials as structural materials at cryogenic temperatures. Fe-Mn alloys, however, lose their toughness by catastrophic intergranular failure when tested at low temperatures. This is attributed to the segregation of impurities to grain boundaries. The segregation can take place at higher temperatures than 600 degree C, in both austenite( gamma ) and two-phase( alpha plus gamma ) regions. An addition of molybdenum has been found to be effective in reducing the segregation of phosphorus in the two-phase region and enhancing toughness. However, no perceivable difference was observed in segregation in the gamma field. Double temper has been also identified as a beneficial treatment for improving toughness, which promoted the reversion of austenite along grain boundaries and reduced the susceptibility to intergranular failure.",
author = "Masato Murakami and Koji Shibata and Toshio Fujita",
year = "1986",
month = "2",
language = "English",
volume = "72",
pages = "241--248",
journal = "Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan",
issn = "0021-1575",
publisher = "Iron and Steel Institute of Japan",
number = "2",

}

TY - JOUR

T1 - LOW-TEMPERATURE TOUGHNESS OF 6%Mn STEELS.

AU - Murakami, Masato

AU - Shibata, Koji

AU - Fujita, Toshio

PY - 1986/2

Y1 - 1986/2

N2 - Fe-Mn alloys have microstructures similar to those of Fe-Ni alloys in iron-rich regions; therefore they have potentials as structural materials at cryogenic temperatures. Fe-Mn alloys, however, lose their toughness by catastrophic intergranular failure when tested at low temperatures. This is attributed to the segregation of impurities to grain boundaries. The segregation can take place at higher temperatures than 600 degree C, in both austenite( gamma ) and two-phase( alpha plus gamma ) regions. An addition of molybdenum has been found to be effective in reducing the segregation of phosphorus in the two-phase region and enhancing toughness. However, no perceivable difference was observed in segregation in the gamma field. Double temper has been also identified as a beneficial treatment for improving toughness, which promoted the reversion of austenite along grain boundaries and reduced the susceptibility to intergranular failure.

AB - Fe-Mn alloys have microstructures similar to those of Fe-Ni alloys in iron-rich regions; therefore they have potentials as structural materials at cryogenic temperatures. Fe-Mn alloys, however, lose their toughness by catastrophic intergranular failure when tested at low temperatures. This is attributed to the segregation of impurities to grain boundaries. The segregation can take place at higher temperatures than 600 degree C, in both austenite( gamma ) and two-phase( alpha plus gamma ) regions. An addition of molybdenum has been found to be effective in reducing the segregation of phosphorus in the two-phase region and enhancing toughness. However, no perceivable difference was observed in segregation in the gamma field. Double temper has been also identified as a beneficial treatment for improving toughness, which promoted the reversion of austenite along grain boundaries and reduced the susceptibility to intergranular failure.

UR - http://www.scopus.com/inward/record.url?scp=0022662690&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0022662690&partnerID=8YFLogxK

M3 - Article

VL - 72

SP - 241

EP - 248

JO - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan

JF - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan

SN - 0021-1575

IS - 2

ER -