Effects of alloying additions on the thermal stability of the lamellar structure of γ-TiAl-based cast alloys

G. W. Qin; L. Wulff; K. Oikawa; T. Ikeshoji; S. Sumi; G. Zhao; M. Jiang; D. W. Mao; J. L. Ma; S. M. Hao

doi:10.1016/S0966-9795(00)00116-3

Effects of alloying additions on the thermal stability of the lamellar structure of γ-TiAl-based cast alloys

G. W. Qin, L. Wulff, K. Oikawa, T. Ikeshoji, S. Sumi, G. Zhao, M. Jiang, D. W. Mao, J. L. Ma, S. M. Hao

ENG - Metallurgy

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

The stability of the as-cast lamellar structure in the Ti-48Al, Ti-45Al-3Ga, Ti-45Al-2Nb-2Cr, Ti-46Al and Ti-46Al-1.0-Si alloys at 1150 and 1000 °C was studied. The coarsening was very marked in the case of the first three alloys at 1150 °C and the alloying additions of 3Ga and 2Nb+2Cr to the Ti-45Al alloy did not improve the thermal stability of primary lamellae, but impeded the growth of the coarsened grains. The 2Nb+2Cr additions to the Ti-45Al alloy were favorable to the thermal stability of primary lamellae at 1000 °C. The effect of the 1.0Si addition was even more excellent for the as-cast lamellar structure stability at high temperatures.

Original language	English
Pages (from-to)	173-177
Number of pages	5
Journal	Intermetallics
Volume	9
Issue number	2
DOIs	https://doi.org/10.1016/S0966-9795(00)00116-3
Publication status	Published - 2001 Feb

ASJC Scopus subject areas

Chemistry(all)
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/S0966-9795(00)00116-3

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@article{ca0d16d293824d8cb9bb7ca75932a2f3,

title = "Effects of alloying additions on the thermal stability of the lamellar structure of γ-TiAl-based cast alloys",

abstract = "The stability of the as-cast lamellar structure in the Ti-48Al, Ti-45Al-3Ga, Ti-45Al-2Nb-2Cr, Ti-46Al and Ti-46Al-1.0-Si alloys at 1150 and 1000 °C was studied. The coarsening was very marked in the case of the first three alloys at 1150 °C and the alloying additions of 3Ga and 2Nb+2Cr to the Ti-45Al alloy did not improve the thermal stability of primary lamellae, but impeded the growth of the coarsened grains. The 2Nb+2Cr additions to the Ti-45Al alloy were favorable to the thermal stability of primary lamellae at 1000 °C. The effect of the 1.0Si addition was even more excellent for the as-cast lamellar structure stability at high temperatures.",

author = "Qin, {G. W.} and L. Wulff and K. Oikawa and T. Ikeshoji and S. Sumi and G. Zhao and M. Jiang and Mao, {D. W.} and Ma, {J. L.} and Hao, {S. M.}",

note = "Funding Information: This work was partly supported by the National Natural Science Foundation of China (Contract No. 59371025).",

year = "2001",

month = feb,

doi = "10.1016/S0966-9795(00)00116-3",

language = "English",

volume = "9",

pages = "173--177",

journal = "Intermetallics",

issn = "0966-9795",

publisher = "Elsevier Limited",

number = "2",

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TY - JOUR

T1 - Effects of alloying additions on the thermal stability of the lamellar structure of γ-TiAl-based cast alloys

AU - Qin, G. W.

AU - Wulff, L.

AU - Oikawa, K.

AU - Ikeshoji, T.

AU - Sumi, S.

AU - Zhao, G.

AU - Jiang, M.

AU - Mao, D. W.

AU - Ma, J. L.

AU - Hao, S. M.

N1 - Funding Information: This work was partly supported by the National Natural Science Foundation of China (Contract No. 59371025).

PY - 2001/2

Y1 - 2001/2

N2 - The stability of the as-cast lamellar structure in the Ti-48Al, Ti-45Al-3Ga, Ti-45Al-2Nb-2Cr, Ti-46Al and Ti-46Al-1.0-Si alloys at 1150 and 1000 °C was studied. The coarsening was very marked in the case of the first three alloys at 1150 °C and the alloying additions of 3Ga and 2Nb+2Cr to the Ti-45Al alloy did not improve the thermal stability of primary lamellae, but impeded the growth of the coarsened grains. The 2Nb+2Cr additions to the Ti-45Al alloy were favorable to the thermal stability of primary lamellae at 1000 °C. The effect of the 1.0Si addition was even more excellent for the as-cast lamellar structure stability at high temperatures.

AB - The stability of the as-cast lamellar structure in the Ti-48Al, Ti-45Al-3Ga, Ti-45Al-2Nb-2Cr, Ti-46Al and Ti-46Al-1.0-Si alloys at 1150 and 1000 °C was studied. The coarsening was very marked in the case of the first three alloys at 1150 °C and the alloying additions of 3Ga and 2Nb+2Cr to the Ti-45Al alloy did not improve the thermal stability of primary lamellae, but impeded the growth of the coarsened grains. The 2Nb+2Cr additions to the Ti-45Al alloy were favorable to the thermal stability of primary lamellae at 1000 °C. The effect of the 1.0Si addition was even more excellent for the as-cast lamellar structure stability at high temperatures.

UR - http://www.scopus.com/inward/record.url?scp=0035254909&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035254909&partnerID=8YFLogxK

U2 - 10.1016/S0966-9795(00)00116-3

DO - 10.1016/S0966-9795(00)00116-3

M3 - Article

AN - SCOPUS:0035254909

SN - 0966-9795

VL - 9

SP - 173

EP - 177

JO - Intermetallics

JF - Intermetallics

IS - 2

ER -

Effects of alloying additions on the thermal stability of the lamellar structure of γ-TiAl-based cast alloys

Abstract

ASJC Scopus subject areas

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