Grain refinement in cast Ti-46Al-8Nb and Ti-46Al-8Ta alloys via massive transformation

V. Imayev, T. Khismatullin, T. Oleneva, R. Imayev, R. Valiev, R. Wunderlich, A. Minkow, U. Hecht, H. -J. Fecht

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Some of the advantages and disadvantages of massive transformation, which has emerged as a grain refinement technique for cast Ti-46Al-8Nb and Ti-46Al-8Ta alloys, are discussed. The most significant advantages of the treatment technique, include its simplicity and exclusion of boron as a refining agent. It is expected that the second advantage can be beneficial for ductility, considering that coarse borides reduce the tensile ductility in cast TiAl alloys. The main problem faced in developing the massive transformation, as a useful processing technique for TiAl alloys, relates to the fact that high and narrow cooling rates windows are required for the massive transformation. It is found that high cooling rates can lead to crack formation, while being difficult to achieve in thick sections. Another problem associated with the technique is, the need to gather information about the temperature range at which these alloys transform into a convoluted structure.

LanguageEnglish
Pages1095-1100
Number of pages6
JournalAdvanced Engineering Materials
Volume10
Issue number12
DOIs
Publication statusPublished - Dec 2008
Externally publishedYes

Fingerprint

Grain refinement
casts
ductility
Ductility
cooling
borides
cast alloys
Boron Compounds
crack initiation
refining
Cooling
exclusion
Boron
Borides
boron
Crack initiation
Refining
Processing
temperature
Temperature

Keywords

  • grain refinement
  • alloys
  • coarse grained structures

Cite this

Imayev, V. ; Khismatullin, T. ; Oleneva, T. ; Imayev, R. ; Valiev, R. ; Wunderlich, R. ; Minkow, A. ; Hecht, U. ; Fecht, H. -J. / Grain refinement in cast Ti-46Al-8Nb and Ti-46Al-8Ta alloys via massive transformation. In: Advanced Engineering Materials. 2008 ; Vol. 10, No. 12. pp. 1095-1100.
@article{9719e614264f496f89eb4e9a7d7d7156,
title = "Grain refinement in cast Ti-46Al-8Nb and Ti-46Al-8Ta alloys via massive transformation",
abstract = "Some of the advantages and disadvantages of massive transformation, which has emerged as a grain refinement technique for cast Ti-46Al-8Nb and Ti-46Al-8Ta alloys, are discussed. The most significant advantages of the treatment technique, include its simplicity and exclusion of boron as a refining agent. It is expected that the second advantage can be beneficial for ductility, considering that coarse borides reduce the tensile ductility in cast TiAl alloys. The main problem faced in developing the massive transformation, as a useful processing technique for TiAl alloys, relates to the fact that high and narrow cooling rates windows are required for the massive transformation. It is found that high cooling rates can lead to crack formation, while being difficult to achieve in thick sections. Another problem associated with the technique is, the need to gather information about the temperature range at which these alloys transform into a convoluted structure.",
keywords = "grain refinement, alloys, coarse grained structures",
author = "V. Imayev and T. Khismatullin and T. Oleneva and R. Imayev and R. Valiev and R. Wunderlich and A. Minkow and U. Hecht and Fecht, {H. -J.}",
year = "2008",
month = "12",
doi = "10.1002/adem.200800159",
language = "English",
volume = "10",
pages = "1095--1100",
journal = "Advanced Engineering Materials",
issn = "1438-1656",
number = "12",

}

Imayev, V, Khismatullin, T, Oleneva, T, Imayev, R, Valiev, R, Wunderlich, R, Minkow, A, Hecht, U & Fecht, H-J 2008, 'Grain refinement in cast Ti-46Al-8Nb and Ti-46Al-8Ta alloys via massive transformation' Advanced Engineering Materials, vol. 10, no. 12, pp. 1095-1100. https://doi.org/10.1002/adem.200800159

Grain refinement in cast Ti-46Al-8Nb and Ti-46Al-8Ta alloys via massive transformation. / Imayev, V.; Khismatullin, T.; Oleneva, T.; Imayev, R.; Valiev, R.; Wunderlich, R.; Minkow, A.; Hecht, U.; Fecht, H. -J.

In: Advanced Engineering Materials, Vol. 10, No. 12, 12.2008, p. 1095-1100.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Grain refinement in cast Ti-46Al-8Nb and Ti-46Al-8Ta alloys via massive transformation

AU - Imayev, V.

AU - Khismatullin, T.

AU - Oleneva, T.

AU - Imayev, R.

AU - Valiev, R.

AU - Wunderlich, R.

AU - Minkow, A.

AU - Hecht, U.

AU - Fecht, H. -J.

PY - 2008/12

Y1 - 2008/12

N2 - Some of the advantages and disadvantages of massive transformation, which has emerged as a grain refinement technique for cast Ti-46Al-8Nb and Ti-46Al-8Ta alloys, are discussed. The most significant advantages of the treatment technique, include its simplicity and exclusion of boron as a refining agent. It is expected that the second advantage can be beneficial for ductility, considering that coarse borides reduce the tensile ductility in cast TiAl alloys. The main problem faced in developing the massive transformation, as a useful processing technique for TiAl alloys, relates to the fact that high and narrow cooling rates windows are required for the massive transformation. It is found that high cooling rates can lead to crack formation, while being difficult to achieve in thick sections. Another problem associated with the technique is, the need to gather information about the temperature range at which these alloys transform into a convoluted structure.

AB - Some of the advantages and disadvantages of massive transformation, which has emerged as a grain refinement technique for cast Ti-46Al-8Nb and Ti-46Al-8Ta alloys, are discussed. The most significant advantages of the treatment technique, include its simplicity and exclusion of boron as a refining agent. It is expected that the second advantage can be beneficial for ductility, considering that coarse borides reduce the tensile ductility in cast TiAl alloys. The main problem faced in developing the massive transformation, as a useful processing technique for TiAl alloys, relates to the fact that high and narrow cooling rates windows are required for the massive transformation. It is found that high cooling rates can lead to crack formation, while being difficult to achieve in thick sections. Another problem associated with the technique is, the need to gather information about the temperature range at which these alloys transform into a convoluted structure.

KW - grain refinement

KW - alloys

KW - coarse grained structures

UR - http://www.scopus.com/inward/record.url?scp=58149499453&partnerID=8YFLogxK

U2 - 10.1002/adem.200800159

DO - 10.1002/adem.200800159

M3 - Article

VL - 10

SP - 1095

EP - 1100

JO - Advanced Engineering Materials

T2 - Advanced Engineering Materials

JF - Advanced Engineering Materials

SN - 1438-1656

IS - 12

ER -