Intragranular precipitation variations in laser deposited Waspaloy due to compositional inhomogeneities

R. J. Moat; M. Karadge; A. J. Pinkerton; A. Deschamps; F. Bley; L. Li; P. J. Withers; M. Preuss

Intragranular precipitation variations in laser deposited Waspaloy due to compositional inhomogeneities

R. J. Moat, M. Karadge, A. J. Pinkerton, A. Deschamps, F. Bley, L. Li, P. J. Withers, M. Preuss

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

Abstract

Laser direct metal Deposition (DMD) has attracted considerable attention in recent years and has been developed for use in the aerospace industry with various high temperature materials. In nickel-base superalloys, due to the processing conditions found in DMD, little precipitation of γ' is seen in the as-deposited condition. In order to recover the mechanical properties local aging is required, which could be undertaken using a defocused laser beam if γ′ precipitation is sufficiently rapid. Detailed characterisation of the γ′ precipitation and coarsening response during aging of DMD Waspaloy has been undertaken. Novel in-situ studies were carried out using small angle synchrotron x-ray scattering (SAXS) for studying precipitation and coarsening of γ′ at various temperatures. For some aging temperatures, two populations of γ′ precipitates coarsening at different rates were found. Detailed ultra high resolution SEM and energy dispersive x-ray spectroscopy (EDS) revealed that the two γ′ populations can be attributed to chemical segregation in the material.

Original language	English
Title of host publication	Properties and Performance of High Temperature Alloys and Coatings 2007 - Proceedings of Symposium held during the 2007 TMS Annual Meeting
Pages	77-86
Number of pages	10
Publication status	Published - 2007
Externally published	Yes
Event	The Minerals, Metals & Materials Society Annual Meeting and Exhibition 2007 - Orlando, United States of America Duration: 25 Feb 2007 → 1 Mar 2007 Conference number: 136th

Conference

Conference	The Minerals, Metals & Materials Society Annual Meeting and Exhibition 2007
Abbreviated title	TMS Annual 2007
Country/Territory	United States of America
City	Orlando
Period	25/02/07 → 1/03/07

Keywords

Laser deposition
Precipitation
SAXS
Segregation
Waspaloy

Cite this

Moat, R. J., Karadge, M., Pinkerton, A. J., Deschamps, A., Bley, F., Li, L., Withers, P. J., & Preuss, M. (2007). Intragranular precipitation variations in laser deposited Waspaloy due to compositional inhomogeneities. In Properties and Performance of High Temperature Alloys and Coatings 2007 - Proceedings of Symposium held during the 2007 TMS Annual Meeting (pp. 77-86)

@inproceedings{250f07b5ed8540bc86c4b80c0c4aa12e,

title = "Intragranular precipitation variations in laser deposited Waspaloy due to compositional inhomogeneities",

abstract = "Laser direct metal Deposition (DMD) has attracted considerable attention in recent years and has been developed for use in the aerospace industry with various high temperature materials. In nickel-base superalloys, due to the processing conditions found in DMD, little precipitation of γ' is seen in the as-deposited condition. In order to recover the mechanical properties local aging is required, which could be undertaken using a defocused laser beam if γ′ precipitation is sufficiently rapid. Detailed characterisation of the γ′ precipitation and coarsening response during aging of DMD Waspaloy has been undertaken. Novel in-situ studies were carried out using small angle synchrotron x-ray scattering (SAXS) for studying precipitation and coarsening of γ′ at various temperatures. For some aging temperatures, two populations of γ′ precipitates coarsening at different rates were found. Detailed ultra high resolution SEM and energy dispersive x-ray spectroscopy (EDS) revealed that the two γ′ populations can be attributed to chemical segregation in the material.",

keywords = "Laser deposition, Precipitation, SAXS, Segregation, Waspaloy",

author = "Moat, {R. J.} and M. Karadge and Pinkerton, {A. J.} and A. Deschamps and F. Bley and L. Li and Withers, {P. J.} and M. Preuss",

year = "2007",

language = "English",

isbn = "9780873396905",

pages = "77--86",

booktitle = "Properties and Performance of High Temperature Alloys and Coatings 2007 - Proceedings of Symposium held during the 2007 TMS Annual Meeting",

note = "The Minerals, Metals & Materials Society Annual Meeting and Exhibition 2007, TMS Annual 2007 ; Conference date: 25-02-2007 Through 01-03-2007",

}

Moat, RJ, Karadge, M, Pinkerton, AJ, Deschamps, A, Bley, F, Li, L, Withers, PJ & Preuss, M 2007, Intragranular precipitation variations in laser deposited Waspaloy due to compositional inhomogeneities. in Properties and Performance of High Temperature Alloys and Coatings 2007 - Proceedings of Symposium held during the 2007 TMS Annual Meeting. pp. 77-86, The Minerals, Metals & Materials Society Annual Meeting and Exhibition 2007, Orlando, Florida, United States of America, 25/02/07.

Intragranular precipitation variations in laser deposited Waspaloy due to compositional inhomogeneities. / Moat, R. J.; Karadge, M.; Pinkerton, A. J. et al.
Properties and Performance of High Temperature Alloys and Coatings 2007 - Proceedings of Symposium held during the 2007 TMS Annual Meeting. 2007. p. 77-86.

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

TY - GEN

T1 - Intragranular precipitation variations in laser deposited Waspaloy due to compositional inhomogeneities

AU - Moat, R. J.

AU - Karadge, M.

AU - Pinkerton, A. J.

AU - Deschamps, A.

AU - Bley, F.

AU - Li, L.

AU - Withers, P. J.

AU - Preuss, M.

N1 - Conference code: 136th

PY - 2007

Y1 - 2007

N2 - Laser direct metal Deposition (DMD) has attracted considerable attention in recent years and has been developed for use in the aerospace industry with various high temperature materials. In nickel-base superalloys, due to the processing conditions found in DMD, little precipitation of γ' is seen in the as-deposited condition. In order to recover the mechanical properties local aging is required, which could be undertaken using a defocused laser beam if γ′ precipitation is sufficiently rapid. Detailed characterisation of the γ′ precipitation and coarsening response during aging of DMD Waspaloy has been undertaken. Novel in-situ studies were carried out using small angle synchrotron x-ray scattering (SAXS) for studying precipitation and coarsening of γ′ at various temperatures. For some aging temperatures, two populations of γ′ precipitates coarsening at different rates were found. Detailed ultra high resolution SEM and energy dispersive x-ray spectroscopy (EDS) revealed that the two γ′ populations can be attributed to chemical segregation in the material.

AB - Laser direct metal Deposition (DMD) has attracted considerable attention in recent years and has been developed for use in the aerospace industry with various high temperature materials. In nickel-base superalloys, due to the processing conditions found in DMD, little precipitation of γ' is seen in the as-deposited condition. In order to recover the mechanical properties local aging is required, which could be undertaken using a defocused laser beam if γ′ precipitation is sufficiently rapid. Detailed characterisation of the γ′ precipitation and coarsening response during aging of DMD Waspaloy has been undertaken. Novel in-situ studies were carried out using small angle synchrotron x-ray scattering (SAXS) for studying precipitation and coarsening of γ′ at various temperatures. For some aging temperatures, two populations of γ′ precipitates coarsening at different rates were found. Detailed ultra high resolution SEM and energy dispersive x-ray spectroscopy (EDS) revealed that the two γ′ populations can be attributed to chemical segregation in the material.

KW - Laser deposition

KW - Precipitation

KW - SAXS

KW - Segregation

KW - Waspaloy

UR - http://www.scopus.com/inward/record.url?scp=40549103475&partnerID=8YFLogxK

M3 - Conference Paper

AN - SCOPUS:40549103475

SN - 9780873396905

SP - 77

EP - 86

BT - Properties and Performance of High Temperature Alloys and Coatings 2007 - Proceedings of Symposium held during the 2007 TMS Annual Meeting

T2 - The Minerals, Metals & Materials Society Annual Meeting and Exhibition 2007

Y2 - 25 February 2007 through 1 March 2007

ER -

Intragranular precipitation variations in laser deposited Waspaloy due to compositional inhomogeneities

Abstract

Conference

Keywords

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