Retardation of 20%Cr steel oxidation with laves phase precipitation

Shinsuke Ide, Yoshimasa Funakawa, Yasushi Kato, Osamu Furukimi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A new method to improve oxidation resistance of ferritic stainless steel was studied. Increase in oxidation resistance of ferritic stainless steel with laves phase precipitation was succeeded in addition to the conventional method such as addition of rare-earth element. Ultra low carbon 20%Cr steels with various niobium content continuously oxidized at 1073-1173K in air. A mass gain with exposure at 1073K decreased with increasing niobium content and saturated more than 0.1% in niobium content. In steels contained niobium less than 0.1%, mass gain were also decreased with increase in initial ferritic grain diameter. In steels contained niobium more than 0.1%, laves phase was observed at the ferritic grain boundary by using transmission electron microscope. But then a mass gain with exposure at 1173K did not decreased with niobium content and laves phase was not observed. On the assumption that oxidation behaviors of steels contained niobium more than 0.1% obey the parabolic law, the parabolic rate constant obtained at 1173K is similar to that controlled by grain boundary diffusion, and parabolic rate constant obtained at 1073K is similar to that controlled by lattice diffusion. These results suggest that precipitation of laves phase retard growth of oxide film effectively with suppressing grain boundary diffusion of cation forming oxide film.

Original languageEnglish
Title of host publicationSupplement to THERMEC 2006, 5th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2006
Pages4887-4890
Number of pages4
EditionPART 5
Publication statusPublished - Dec 1 2007
Event5th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2006 - Vancouver, Canada
Duration: Jul 4 2006Jul 8 2006

Publication series

NameMaterials Science Forum
NumberPART 5
Volume539-543
ISSN (Print)0255-5476

Other

Other5th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2006
CountryCanada
CityVancouver
Period7/4/067/8/06

Fingerprint

Niobium
Laves phases
Steel
niobium
steels
Oxidation
oxidation
ferritic stainless steels
Grain boundaries
grain boundaries
oxidation resistance
Stainless Steel
Ferritic steel
Oxidation resistance
Oxide films
oxide films
Rate constants
Stainless steel
Rare earth elements
Cations

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Ide, S., Funakawa, Y., Kato, Y., & Furukimi, O. (2007). Retardation of 20%Cr steel oxidation with laves phase precipitation. In Supplement to THERMEC 2006, 5th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2006 (PART 5 ed., pp. 4887-4890). (Materials Science Forum; Vol. 539-543, No. PART 5).

Retardation of 20%Cr steel oxidation with laves phase precipitation. / Ide, Shinsuke; Funakawa, Yoshimasa; Kato, Yasushi; Furukimi, Osamu.

Supplement to THERMEC 2006, 5th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2006. PART 5. ed. 2007. p. 4887-4890 (Materials Science Forum; Vol. 539-543, No. PART 5).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ide, S, Funakawa, Y, Kato, Y & Furukimi, O 2007, Retardation of 20%Cr steel oxidation with laves phase precipitation. in Supplement to THERMEC 2006, 5th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2006. PART 5 edn, Materials Science Forum, no. PART 5, vol. 539-543, pp. 4887-4890, 5th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2006, Vancouver, Canada, 7/4/06.
Ide S, Funakawa Y, Kato Y, Furukimi O. Retardation of 20%Cr steel oxidation with laves phase precipitation. In Supplement to THERMEC 2006, 5th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2006. PART 5 ed. 2007. p. 4887-4890. (Materials Science Forum; PART 5).
Ide, Shinsuke ; Funakawa, Yoshimasa ; Kato, Yasushi ; Furukimi, Osamu. / Retardation of 20%Cr steel oxidation with laves phase precipitation. Supplement to THERMEC 2006, 5th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2006. PART 5. ed. 2007. pp. 4887-4890 (Materials Science Forum; PART 5).
@inproceedings{5023e7bbf61046948ef2b2cdcf2e406f,
title = "Retardation of 20{\%}Cr steel oxidation with laves phase precipitation",
abstract = "A new method to improve oxidation resistance of ferritic stainless steel was studied. Increase in oxidation resistance of ferritic stainless steel with laves phase precipitation was succeeded in addition to the conventional method such as addition of rare-earth element. Ultra low carbon 20{\%}Cr steels with various niobium content continuously oxidized at 1073-1173K in air. A mass gain with exposure at 1073K decreased with increasing niobium content and saturated more than 0.1{\%} in niobium content. In steels contained niobium less than 0.1{\%}, mass gain were also decreased with increase in initial ferritic grain diameter. In steels contained niobium more than 0.1{\%}, laves phase was observed at the ferritic grain boundary by using transmission electron microscope. But then a mass gain with exposure at 1173K did not decreased with niobium content and laves phase was not observed. On the assumption that oxidation behaviors of steels contained niobium more than 0.1{\%} obey the parabolic law, the parabolic rate constant obtained at 1173K is similar to that controlled by grain boundary diffusion, and parabolic rate constant obtained at 1073K is similar to that controlled by lattice diffusion. These results suggest that precipitation of laves phase retard growth of oxide film effectively with suppressing grain boundary diffusion of cation forming oxide film.",
author = "Shinsuke Ide and Yoshimasa Funakawa and Yasushi Kato and Osamu Furukimi",
year = "2007",
month = "12",
day = "1",
language = "English",
isbn = "0878494286",
series = "Materials Science Forum",
number = "PART 5",
pages = "4887--4890",
booktitle = "Supplement to THERMEC 2006, 5th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2006",
edition = "PART 5",

}

TY - GEN

T1 - Retardation of 20%Cr steel oxidation with laves phase precipitation

AU - Ide, Shinsuke

AU - Funakawa, Yoshimasa

AU - Kato, Yasushi

AU - Furukimi, Osamu

PY - 2007/12/1

Y1 - 2007/12/1

N2 - A new method to improve oxidation resistance of ferritic stainless steel was studied. Increase in oxidation resistance of ferritic stainless steel with laves phase precipitation was succeeded in addition to the conventional method such as addition of rare-earth element. Ultra low carbon 20%Cr steels with various niobium content continuously oxidized at 1073-1173K in air. A mass gain with exposure at 1073K decreased with increasing niobium content and saturated more than 0.1% in niobium content. In steels contained niobium less than 0.1%, mass gain were also decreased with increase in initial ferritic grain diameter. In steels contained niobium more than 0.1%, laves phase was observed at the ferritic grain boundary by using transmission electron microscope. But then a mass gain with exposure at 1173K did not decreased with niobium content and laves phase was not observed. On the assumption that oxidation behaviors of steels contained niobium more than 0.1% obey the parabolic law, the parabolic rate constant obtained at 1173K is similar to that controlled by grain boundary diffusion, and parabolic rate constant obtained at 1073K is similar to that controlled by lattice diffusion. These results suggest that precipitation of laves phase retard growth of oxide film effectively with suppressing grain boundary diffusion of cation forming oxide film.

AB - A new method to improve oxidation resistance of ferritic stainless steel was studied. Increase in oxidation resistance of ferritic stainless steel with laves phase precipitation was succeeded in addition to the conventional method such as addition of rare-earth element. Ultra low carbon 20%Cr steels with various niobium content continuously oxidized at 1073-1173K in air. A mass gain with exposure at 1073K decreased with increasing niobium content and saturated more than 0.1% in niobium content. In steels contained niobium less than 0.1%, mass gain were also decreased with increase in initial ferritic grain diameter. In steels contained niobium more than 0.1%, laves phase was observed at the ferritic grain boundary by using transmission electron microscope. But then a mass gain with exposure at 1173K did not decreased with niobium content and laves phase was not observed. On the assumption that oxidation behaviors of steels contained niobium more than 0.1% obey the parabolic law, the parabolic rate constant obtained at 1173K is similar to that controlled by grain boundary diffusion, and parabolic rate constant obtained at 1073K is similar to that controlled by lattice diffusion. These results suggest that precipitation of laves phase retard growth of oxide film effectively with suppressing grain boundary diffusion of cation forming oxide film.

UR - http://www.scopus.com/inward/record.url?scp=38349011353&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=38349011353&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:38349011353

SN - 0878494286

SN - 9780878494286

T3 - Materials Science Forum

SP - 4887

EP - 4890

BT - Supplement to THERMEC 2006, 5th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2006

ER -