Time-resolved Bragg-edge neutron radiography for observing martensitic phase transformation from austenitized super martensitic steel

Eitan Dabah; Beate Pfretzschner; Thomas Schaupp; Nikolay Kardjilov; Ingo Manke; Mirko Boin; Robin Woracek; Axel Griesche

doi:10.1007/s10853-016-0642-9

Time-resolved Bragg-edge neutron radiography for observing martensitic phase transformation from austenitized super martensitic steel

Eitan Dabah
, Beate Pfretzschner
, Thomas Schaupp
, Nikolay Kardjilov
, Ingo Manke
, Mirko Boin
, Robin Woracek
, Axel Griesche

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Neutron Bragg-edge imaging was applied for the visualization of a γ-austenite to α′-martensite phase transformation. In the present study, a super martensitic stainless steel sample was heated until complete austenitization and was subsequently cooled down to room temperature. The martensitic phase transformation started at M_s = 190 °C. Using a monochromatic neutron beam with λ = 0.390 nm, the transmitted intensity was significantly reduced during cooling below M_s, since the emerging martensitic phase has a higher attenuation coefficient than the austenitic phase at this wavelength. The phase transformation process was visualized by filming the transmission images from a scintillator screen with a CCD camera with a temporal resolution of 30 s and a spatial resolution of 100 µm.

Original language	English
Pages (from-to)	3490-3496
Number of pages	7
Journal	Journal of Materials Science
Volume	52
Issue number	6
DOIs	https://doi.org/10.1007/s10853-016-0642-9
State	Published - 1 Mar 2017
Externally published	Yes

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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10.1007/s10853-016-0642-9

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title = "Time-resolved Bragg-edge neutron radiography for observing martensitic phase transformation from austenitized super martensitic steel",

abstract = "Neutron Bragg-edge imaging was applied for the visualization of a γ-austenite to α′-martensite phase transformation. In the present study, a super martensitic stainless steel sample was heated until complete austenitization and was subsequently cooled down to room temperature. The martensitic phase transformation started at Ms = 190 °C. Using a monochromatic neutron beam with λ = 0.390 nm, the transmitted intensity was significantly reduced during cooling below Ms, since the emerging martensitic phase has a higher attenuation coefficient than the austenitic phase at this wavelength. The phase transformation process was visualized by filming the transmission images from a scintillator screen with a CCD camera with a temporal resolution of 30 s and a spatial resolution of 100 µm.",

author = "Eitan Dabah and Beate Pfretzschner and Thomas Schaupp and Nikolay Kardjilov and Ingo Manke and Mirko Boin and Robin Woracek and Axel Griesche",

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T1 - Time-resolved Bragg-edge neutron radiography for observing martensitic phase transformation from austenitized super martensitic steel

AU - Dabah, Eitan

AU - Pfretzschner, Beate

AU - Schaupp, Thomas

AU - Kardjilov, Nikolay

AU - Manke, Ingo

AU - Boin, Mirko

AU - Woracek, Robin

AU - Griesche, Axel

PY - 2017/3/1

Y1 - 2017/3/1

N2 - Neutron Bragg-edge imaging was applied for the visualization of a γ-austenite to α′-martensite phase transformation. In the present study, a super martensitic stainless steel sample was heated until complete austenitization and was subsequently cooled down to room temperature. The martensitic phase transformation started at Ms = 190 °C. Using a monochromatic neutron beam with λ = 0.390 nm, the transmitted intensity was significantly reduced during cooling below Ms, since the emerging martensitic phase has a higher attenuation coefficient than the austenitic phase at this wavelength. The phase transformation process was visualized by filming the transmission images from a scintillator screen with a CCD camera with a temporal resolution of 30 s and a spatial resolution of 100 µm.

AB - Neutron Bragg-edge imaging was applied for the visualization of a γ-austenite to α′-martensite phase transformation. In the present study, a super martensitic stainless steel sample was heated until complete austenitization and was subsequently cooled down to room temperature. The martensitic phase transformation started at Ms = 190 °C. Using a monochromatic neutron beam with λ = 0.390 nm, the transmitted intensity was significantly reduced during cooling below Ms, since the emerging martensitic phase has a higher attenuation coefficient than the austenitic phase at this wavelength. The phase transformation process was visualized by filming the transmission images from a scintillator screen with a CCD camera with a temporal resolution of 30 s and a spatial resolution of 100 µm.

UR - https://www.scopus.com/pages/publications/85000900003

U2 - 10.1007/s10853-016-0642-9

DO - 10.1007/s10853-016-0642-9

M3 - Article

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JO - Journal of Materials Science

JF - Journal of Materials Science

IS - 6

ER -

Time-resolved Bragg-edge neutron radiography for observing martensitic phase transformation from austenitized super martensitic steel

Abstract

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