3D analysis of creep voids in hydrogen reformer tubes

An ex-service hydrogen reformer tube composed of Fe-0.45% C-25% Cr-35% Ni-1.0% Si-1.5% Nb-1.0% Mn (approximate wt.%) was examined via serial sectioning and 3D reconstruction to characterize creep voids in terms of their size, location, and surrounding precipitates. In addition, electron backscatter...

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Main Authors:	Wahab, A.A., Kral, M.V.
Format:	Article
Published:	Elsevier B.V 2005
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://eprints.utp.edu.my/2215/

id	utp-2215
recordtype	eprints
spelling	utp-22152010-05-21T07:24:40Z 3D analysis of creep voids in hydrogen reformer tubes Wahab, A.A. Kral, M.V. TJ Mechanical engineering and machinery An ex-service hydrogen reformer tube composed of Fe-0.45% C-25% Cr-35% Ni-1.0% Si-1.5% Nb-1.0% Mn (approximate wt.%) was examined via serial sectioning and 3D reconstruction to characterize creep voids in terms of their size, location, and surrounding precipitates. In addition, electron backscatter diffraction (EBSD) technique was used to investigate any crystallographic influence on the location of these voids. Observations in 3D show that void distribution is not uniform in terms of size, shape, and location. Most of the voids are oblong and occur at grain edges and corners. In addition, all observed voids were in contact with the Cr-rich M23C6 precipitates. EBSD results showed that 80% of the M23C6 precipitates surrounding these voids have an irrational crystallographic orientation relationship (OR) with the austenite matrix, contrary to the expectation that grain boundary precipitates nearly always obtain rational OR with respect to one adjacent grain. Elsevier B.V 2005-12-05 Article PeerReviewed Wahab, A.A. and Kral, M.V. (2005) 3D analysis of creep voids in hydrogen reformer tubes. Materials Science and Engineering: A, 412 (1-2). pp. 222-229. ISSN 0921-5093 http://eprints.utp.edu.my/2215/
institution	Universiti Teknologi Petronas Universiti Teknologi Petronas
repository_type	Digital Repository
institution_category	Local University
building	UTP Repository
collection	Online Access
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Wahab, A.A. Kral, M.V. 3D analysis of creep voids in hydrogen reformer tubes
description	An ex-service hydrogen reformer tube composed of Fe-0.45% C-25% Cr-35% Ni-1.0% Si-1.5% Nb-1.0% Mn (approximate wt.%) was examined via serial sectioning and 3D reconstruction to characterize creep voids in terms of their size, location, and surrounding precipitates. In addition, electron backscatter diffraction (EBSD) technique was used to investigate any crystallographic influence on the location of these voids. Observations in 3D show that void distribution is not uniform in terms of size, shape, and location. Most of the voids are oblong and occur at grain edges and corners. In addition, all observed voids were in contact with the Cr-rich M23C6 precipitates. EBSD results showed that 80% of the M23C6 precipitates surrounding these voids have an irrational crystallographic orientation relationship (OR) with the austenite matrix, contrary to the expectation that grain boundary precipitates nearly always obtain rational OR with respect to one adjacent grain.
format	Article
author	Wahab, A.A. Kral, M.V.
author_facet	Wahab, A.A. Kral, M.V.
author_sort	Wahab, A.A.
title	3D analysis of creep voids in hydrogen reformer tubes
title_short	3D analysis of creep voids in hydrogen reformer tubes
title_full	3D analysis of creep voids in hydrogen reformer tubes
title_fullStr	3D analysis of creep voids in hydrogen reformer tubes
title_full_unstemmed	3D analysis of creep voids in hydrogen reformer tubes
title_sort	3d analysis of creep voids in hydrogen reformer tubes
publisher	Elsevier B.V
publishDate	2005
url	http://eprints.utp.edu.my/2215/
first_indexed	2018-09-08T10:09:36Z
last_indexed	2018-09-08T10:09:36Z
_version_	1611033610388766720

3D analysis of creep voids in hydrogen reformer tubes

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