EBSD characterisation of the B2 orientation in γ-TiAl based alloy

M. N. Mathabathe; A. S. Bolokang; G. Govender; C. W. Siyasiya; R. J. Mostert

doi:10.1088/1757-899X/655/1/012013

EBSD characterisation of the B2 orientation in γ-TiAl based alloy

M. N. Mathabathe, A. S. Bolokang, G. Govender, C. W. Siyasiya, R. J. Mostert

Research output: Contribution to journal › Conference article › peer-review

Abstract

Electron backscattered diffraction (EBSD) has been conducted to determine the orientation relationship of the remnant B2 phase in an α-solidified γ-Ti-45Al-2Nb-0.3Si (at. %) based intermetallic alloy. The morphology and microstructural characterisation was investigated using conventional methods. The results showed that the B2-grains exhibits a Blackburn orientation relationship (BOR) with the α2 grains viz. {111}B2 // {0001}α2 and {110}B2 // {11-20}α2. Moreover, mis-orientation axes of B2-grains were found in the clusters between <101> and <111> in 57-63° angles, in the Y0 directions. In addition, it was also observed that the overall B2 grains in the alloy structure was textured and comprised of high angle boundaries of misorientations above 15° angles.

Original language	English
Article number	012013
Journal	IOP Conference Series: Materials Science and Engineering
Volume	655
Issue number	1
DOIs	https://doi.org/10.1088/1757-899X/655/1/012013
Publication status	Published - 8 Nov 2019
Externally published	Yes
Event	Conference of the South African Advanced Materials Initiative 2019, CoSAAMI 2019 - Vanderbijlpark, South Africa Duration: 22 Oct 2019 → 25 Oct 2019

ASJC Scopus subject areas

General Materials Science
General Engineering

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10.1088/1757-899X/655/1/012013

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title = "EBSD characterisation of the B2 orientation in γ-TiAl based alloy",

abstract = "Electron backscattered diffraction (EBSD) has been conducted to determine the orientation relationship of the remnant B2 phase in an α-solidified γ-Ti-45Al-2Nb-0.3Si (at. %) based intermetallic alloy. The morphology and microstructural characterisation was investigated using conventional methods. The results showed that the B2-grains exhibits a Blackburn orientation relationship (BOR) with the α2 grains viz. {111}B2 // {0001}α2 and {110}B2 // {11-20}α2. Moreover, mis-orientation axes of B2-grains were found in the clusters between <101> and <111> in 57-63° angles, in the Y0 directions. In addition, it was also observed that the overall B2 grains in the alloy structure was textured and comprised of high angle boundaries of misorientations above 15° angles.",

author = "Mathabathe, {M. N.} and Bolokang, {A. S.} and G. Govender and Siyasiya, {C. W.} and Mostert, {R. J.}",

note = "Publisher Copyright: {\textcopyright} 2019 IOP Publishing Ltd. All rights reserved.; Conference of the South African Advanced Materials Initiative 2019, CoSAAMI 2019 ; Conference date: 22-10-2019 Through 25-10-2019",

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doi = "10.1088/1757-899X/655/1/012013",

language = "English",

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journal = "IOP Conference Series: Materials Science and Engineering",

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T1 - EBSD characterisation of the B2 orientation in γ-TiAl based alloy

AU - Mathabathe, M. N.

AU - Bolokang, A. S.

AU - Govender, G.

AU - Siyasiya, C. W.

AU - Mostert, R. J.

PY - 2019/11/8

Y1 - 2019/11/8

N2 - Electron backscattered diffraction (EBSD) has been conducted to determine the orientation relationship of the remnant B2 phase in an α-solidified γ-Ti-45Al-2Nb-0.3Si (at. %) based intermetallic alloy. The morphology and microstructural characterisation was investigated using conventional methods. The results showed that the B2-grains exhibits a Blackburn orientation relationship (BOR) with the α2 grains viz. {111}B2 // {0001}α2 and {110}B2 // {11-20}α2. Moreover, mis-orientation axes of B2-grains were found in the clusters between <101> and <111> in 57-63° angles, in the Y0 directions. In addition, it was also observed that the overall B2 grains in the alloy structure was textured and comprised of high angle boundaries of misorientations above 15° angles.

AB - Electron backscattered diffraction (EBSD) has been conducted to determine the orientation relationship of the remnant B2 phase in an α-solidified γ-Ti-45Al-2Nb-0.3Si (at. %) based intermetallic alloy. The morphology and microstructural characterisation was investigated using conventional methods. The results showed that the B2-grains exhibits a Blackburn orientation relationship (BOR) with the α2 grains viz. {111}B2 // {0001}α2 and {110}B2 // {11-20}α2. Moreover, mis-orientation axes of B2-grains were found in the clusters between <101> and <111> in 57-63° angles, in the Y0 directions. In addition, it was also observed that the overall B2 grains in the alloy structure was textured and comprised of high angle boundaries of misorientations above 15° angles.

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U2 - 10.1088/1757-899X/655/1/012013

DO - 10.1088/1757-899X/655/1/012013

M3 - Conference article

AN - SCOPUS:85076423248

SN - 1757-8981

VL - 655

JO - IOP Conference Series: Materials Science and Engineering

JF - IOP Conference Series: Materials Science and Engineering

IS - 1

M1 - 012013

T2 - Conference of the South African Advanced Materials Initiative 2019, CoSAAMI 2019

Y2 - 22 October 2019 through 25 October 2019

ER -

EBSD characterisation of the B2 orientation in γ-TiAl based alloy

Abstract

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