Microstructure and oxidation behaviors of near-α Ti-6.5Al-4Sn-4Zr-0. 5Mo-based alloys with Ir addition

W. L. Xiao, Hideyuki Murakami, D. H. Ping, Y. Yamabe-Mitarai

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The microstructure and oxidation behaviors of near α-Ti-based alloys with small amount of iridium (Ir) additions were investigated. The microstructure of both Ir-free and Ir-containing alloys was observed to consist of α + β Widmanstätten colonies. The β lamellae gradually became continuous with increasing Ir additions since Ir acted as a β-stabilizer in the alloys. Isothermal oxidation test indicated that Ir addition reduced the oxidation resistance at 650 C; while at 750 C, the adherence of thermally grown oxides was enhanced, and a thin Al 2O3-enriched layer on the oxide scale was promoted in the Ir-containing alloy, which suggests that Ir addition was effective in improving oxidation resistance of near-α-based alloys at 750 C.

Original languageEnglish
Pages (from-to)3363-3369
Number of pages7
JournalJournal of Materials Science
Volume48
Issue number9
DOIs
Publication statusPublished - 2013 May 1
Externally publishedYes

Fingerprint

Iridium
Oxidation
Microstructure
Oxidation resistance
Oxides

ASJC Scopus subject areas

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

Cite this

Microstructure and oxidation behaviors of near-α Ti-6.5Al-4Sn-4Zr-0. 5Mo-based alloys with Ir addition. / Xiao, W. L.; Murakami, Hideyuki; Ping, D. H.; Yamabe-Mitarai, Y.

In: Journal of Materials Science, Vol. 48, No. 9, 01.05.2013, p. 3363-3369.

Research output: Contribution to journalArticle

@article{14dde62663254cbe99b4ca0b3668f177,
title = "Microstructure and oxidation behaviors of near-α Ti-6.5Al-4Sn-4Zr-0. 5Mo-based alloys with Ir addition",
abstract = "The microstructure and oxidation behaviors of near α-Ti-based alloys with small amount of iridium (Ir) additions were investigated. The microstructure of both Ir-free and Ir-containing alloys was observed to consist of α + β Widmanst{\"a}tten colonies. The β lamellae gradually became continuous with increasing Ir additions since Ir acted as a β-stabilizer in the alloys. Isothermal oxidation test indicated that Ir addition reduced the oxidation resistance at 650 C; while at 750 C, the adherence of thermally grown oxides was enhanced, and a thin Al 2O3-enriched layer on the oxide scale was promoted in the Ir-containing alloy, which suggests that Ir addition was effective in improving oxidation resistance of near-α-based alloys at 750 C.",
author = "Xiao, {W. L.} and Hideyuki Murakami and Ping, {D. H.} and Y. Yamabe-Mitarai",
year = "2013",
month = "5",
day = "1",
doi = "10.1007/s10853-012-7118-3",
language = "English",
volume = "48",
pages = "3363--3369",
journal = "Journal of Materials Science",
issn = "0022-2461",
publisher = "Springer Netherlands",
number = "9",

}

TY - JOUR

T1 - Microstructure and oxidation behaviors of near-α Ti-6.5Al-4Sn-4Zr-0. 5Mo-based alloys with Ir addition

AU - Xiao, W. L.

AU - Murakami, Hideyuki

AU - Ping, D. H.

AU - Yamabe-Mitarai, Y.

PY - 2013/5/1

Y1 - 2013/5/1

N2 - The microstructure and oxidation behaviors of near α-Ti-based alloys with small amount of iridium (Ir) additions were investigated. The microstructure of both Ir-free and Ir-containing alloys was observed to consist of α + β Widmanstätten colonies. The β lamellae gradually became continuous with increasing Ir additions since Ir acted as a β-stabilizer in the alloys. Isothermal oxidation test indicated that Ir addition reduced the oxidation resistance at 650 C; while at 750 C, the adherence of thermally grown oxides was enhanced, and a thin Al 2O3-enriched layer on the oxide scale was promoted in the Ir-containing alloy, which suggests that Ir addition was effective in improving oxidation resistance of near-α-based alloys at 750 C.

AB - The microstructure and oxidation behaviors of near α-Ti-based alloys with small amount of iridium (Ir) additions were investigated. The microstructure of both Ir-free and Ir-containing alloys was observed to consist of α + β Widmanstätten colonies. The β lamellae gradually became continuous with increasing Ir additions since Ir acted as a β-stabilizer in the alloys. Isothermal oxidation test indicated that Ir addition reduced the oxidation resistance at 650 C; while at 750 C, the adherence of thermally grown oxides was enhanced, and a thin Al 2O3-enriched layer on the oxide scale was promoted in the Ir-containing alloy, which suggests that Ir addition was effective in improving oxidation resistance of near-α-based alloys at 750 C.

UR - http://www.scopus.com/inward/record.url?scp=84874750703&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84874750703&partnerID=8YFLogxK

U2 - 10.1007/s10853-012-7118-3

DO - 10.1007/s10853-012-7118-3

M3 - Article

VL - 48

SP - 3363

EP - 3369

JO - Journal of Materials Science

JF - Journal of Materials Science

SN - 0022-2461

IS - 9

ER -