Quantitative in situ X-ray powder diffraction studies of phase transformations in Al alloys

Mark J. Styles, Mark A. Gibson, Christopher R. Hutchinson

Research output: Contribution to conferenceAbstractOther

Abstract

In situ synchrotron X-ray powder diffraction is a powerful tool for
studying phase transformations in engineering alloys, which, when
combined with Rietveld-based data analysis methods, allows the phase
composition of an alloy to be quantified as a function of variables such
as time or temperature. This approach has recently been used to gain
new insights into phase transitions within two Al alloy systems. In
situ isothermal aging experiments have confirmed that the
decomposition sequence in Al-Cu-Mg alloys involves a metastable
variant of the S (Al2CuMg) phase, and enabled the kinetics of the
transformation between metastable and equilibrium S phases to be
investigated. In addition, continuous heating experiments have been
used to investigate crystallisation pathways in Al-Ni-Y metallic glasses,
and have revealed that the mechanism switches from a two stage
process involving α-Al, to a three stage process involving Al9Ni2 and a
transient excess of Al3Ni, with increasing Ni concentration.
Original languageEnglish
Pages201-202
Number of pages2
Publication statusPublished - 2015
EventInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials (PTM) 2015 - Westin Whistler Resort & Spa, Whistler, Canada
Duration: 28 Jun 20153 Jul 2015
https://www.eiseverywhere.com//ehome/ptm2015/

Conference

ConferenceInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials (PTM) 2015
Abbreviated titlePTM 2015
CountryCanada
CityWhistler
Period28/06/153/07/15
Internet address

Keywords

  • Al alloys
  • Precipitation
  • Rietveld analysis
  • X-ray powder diffraction

Cite this

Styles, M. J., Gibson, M. A., & Hutchinson, C. R. (2015). Quantitative in situ X-ray powder diffraction studies of phase transformations in Al alloys. 201-202. Abstract from International Conference on Solid-Solid Phase Transformations in Inorganic Materials (PTM) 2015, Whistler, Canada.
Styles, Mark J. ; Gibson, Mark A. ; Hutchinson, Christopher R. / Quantitative in situ X-ray powder diffraction studies of phase transformations in Al alloys. Abstract from International Conference on Solid-Solid Phase Transformations in Inorganic Materials (PTM) 2015, Whistler, Canada.2 p.
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abstract = "In situ synchrotron X-ray powder diffraction is a powerful tool forstudying phase transformations in engineering alloys, which, whencombined with Rietveld-based data analysis methods, allows the phasecomposition of an alloy to be quantified as a function of variables suchas time or temperature. This approach has recently been used to gainnew insights into phase transitions within two Al alloy systems. Insitu isothermal aging experiments have confirmed that thedecomposition sequence in Al-Cu-Mg alloys involves a metastablevariant of the S (Al2CuMg) phase, and enabled the kinetics of thetransformation between metastable and equilibrium S phases to beinvestigated. In addition, continuous heating experiments have beenused to investigate crystallisation pathways in Al-Ni-Y metallic glasses,and have revealed that the mechanism switches from a two stageprocess involving α-Al, to a three stage process involving Al9Ni2 and atransient excess of Al3Ni, with increasing Ni concentration.",
keywords = "Al alloys, Precipitation, Rietveld analysis, X-ray powder diffraction",
author = "Styles, {Mark J.} and Gibson, {Mark A.} and Hutchinson, {Christopher R.}",
year = "2015",
language = "English",
pages = "201--202",
note = "International Conference on Solid-Solid Phase Transformations in Inorganic Materials (PTM) 2015, PTM 2015 ; Conference date: 28-06-2015 Through 03-07-2015",
url = "https://www.eiseverywhere.com//ehome/ptm2015/",

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Styles, MJ, Gibson, MA & Hutchinson, CR 2015, 'Quantitative in situ X-ray powder diffraction studies of phase transformations in Al alloys' International Conference on Solid-Solid Phase Transformations in Inorganic Materials (PTM) 2015, Whistler, Canada, 28/06/15 - 3/07/15, pp. 201-202.

Quantitative in situ X-ray powder diffraction studies of phase transformations in Al alloys. / Styles, Mark J.; Gibson, Mark A.; Hutchinson, Christopher R.

2015. 201-202 Abstract from International Conference on Solid-Solid Phase Transformations in Inorganic Materials (PTM) 2015, Whistler, Canada.

Research output: Contribution to conferenceAbstractOther

TY - CONF

T1 - Quantitative in situ X-ray powder diffraction studies of phase transformations in Al alloys

AU - Styles, Mark J.

AU - Gibson, Mark A.

AU - Hutchinson, Christopher R.

PY - 2015

Y1 - 2015

N2 - In situ synchrotron X-ray powder diffraction is a powerful tool forstudying phase transformations in engineering alloys, which, whencombined with Rietveld-based data analysis methods, allows the phasecomposition of an alloy to be quantified as a function of variables suchas time or temperature. This approach has recently been used to gainnew insights into phase transitions within two Al alloy systems. Insitu isothermal aging experiments have confirmed that thedecomposition sequence in Al-Cu-Mg alloys involves a metastablevariant of the S (Al2CuMg) phase, and enabled the kinetics of thetransformation between metastable and equilibrium S phases to beinvestigated. In addition, continuous heating experiments have beenused to investigate crystallisation pathways in Al-Ni-Y metallic glasses,and have revealed that the mechanism switches from a two stageprocess involving α-Al, to a three stage process involving Al9Ni2 and atransient excess of Al3Ni, with increasing Ni concentration.

AB - In situ synchrotron X-ray powder diffraction is a powerful tool forstudying phase transformations in engineering alloys, which, whencombined with Rietveld-based data analysis methods, allows the phasecomposition of an alloy to be quantified as a function of variables suchas time or temperature. This approach has recently been used to gainnew insights into phase transitions within two Al alloy systems. Insitu isothermal aging experiments have confirmed that thedecomposition sequence in Al-Cu-Mg alloys involves a metastablevariant of the S (Al2CuMg) phase, and enabled the kinetics of thetransformation between metastable and equilibrium S phases to beinvestigated. In addition, continuous heating experiments have beenused to investigate crystallisation pathways in Al-Ni-Y metallic glasses,and have revealed that the mechanism switches from a two stageprocess involving α-Al, to a three stage process involving Al9Ni2 and atransient excess of Al3Ni, with increasing Ni concentration.

KW - Al alloys

KW - Precipitation

KW - Rietveld analysis

KW - X-ray powder diffraction

UR - http://www.scopus.com/inward/record.url?scp=84962694080&partnerID=8YFLogxK

M3 - Abstract

SP - 201

EP - 202

ER -

Styles MJ, Gibson MA, Hutchinson CR. Quantitative in situ X-ray powder diffraction studies of phase transformations in Al alloys. 2015. Abstract from International Conference on Solid-Solid Phase Transformations in Inorganic Materials (PTM) 2015, Whistler, Canada.