Precipitation in a novel maraging steel F1E: A study of austenitization and aging using small angle neutron scattering

V. Gray; D. Galvin; L. Sun; E. P. Gilbert; T. Martin; P. Hill; M. Rawson; K. Perkins

doi:10.1016/j.matchar.2017.05.002

Precipitation in a novel maraging steel F1E: A study of austenitization and aging using small angle neutron scattering

V. Gray^*
, D. Galvin
, L. Sun
, E. P. Gilbert
, T. Martin
, P. Hill
, M. Rawson
, K. Perkins

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

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Abstract

The effect of austenitization temperature, aging temperature, and, aging time on the development of precipitates in a novel maraging steel known as F1E was investigated. The investigation primarily employed small angle neutron scattering (SANS) coupled with thermal calculations, atom probe tomography (APT) and electron microscopy (SEM, STEM, TEM). This large scale study investigated austenitization temperatures of 825, 870 and 960 °C with aging of 0, 1, 2.5, 5, 7.5, 10 and 24 h conducted at 540 °C. For austenitization at 960 °C, aging at 520 °C and 560 °C was also conducted for the same aging times. This yielded 32 conditions where the size, shape and volume fraction of three different precipitates were determined, namely a pre-existing laves phase, a developing laves phase, and a developing β phase. Also observed in this study was a significant change in microstructure of the pre-existing laves precipitate as a result of aging time.

Original language	English
Pages (from-to)	270-281
Number of pages	12
Journal	Materials Characterization
Volume	129
Early online date	5 May 2017
DOIs	https://doi.org/10.1016/j.matchar.2017.05.002
Publication status	Published - 1 Jul 2017

Keywords

Aging
Maraging
Precipitation
SANS
Steel

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This is the final published version of the article (version of record). It first appeared online via Elsevier at http://www.sciencedirect.com/science/article/pii/S1044580317302589. Please refer to any applicable terms of use of the publisher.
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This is the final published version of the article (version of record). It first appeared online via Elsevier at http://www.sciencedirect.com/science/article/pii/S1044580317302589. Please refer to any applicable terms of use of the publisher.
Final published version, 1.82 MBLicence: CC BY

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@article{0a090f1c60d24f22ac2a3465a1ed381e,

title = "Precipitation in a novel maraging steel F1E: A study of austenitization and aging using small angle neutron scattering",

abstract = "The effect of austenitization temperature, aging temperature, and, aging time on the development of precipitates in a novel maraging steel known as F1E was investigated. The investigation primarily employed small angle neutron scattering (SANS) coupled with thermal calculations, atom probe tomography (APT) and electron microscopy (SEM, STEM, TEM). This large scale study investigated austenitization temperatures of 825, 870 and 960 °C with aging of 0, 1, 2.5, 5, 7.5, 10 and 24 h conducted at 540 °C. For austenitization at 960 °C, aging at 520 °C and 560 °C was also conducted for the same aging times. This yielded 32 conditions where the size, shape and volume fraction of three different precipitates were determined, namely a pre-existing laves phase, a developing laves phase, and a developing β phase. Also observed in this study was a significant change in microstructure of the pre-existing laves precipitate as a result of aging time.",

keywords = "Aging, Maraging, Precipitation, SANS, Steel",

author = "V. Gray and D. Galvin and L. Sun and Gilbert, \{E. P.\} and T. Martin and P. Hill and M. Rawson and K. Perkins",

year = "2017",

month = jul,

day = "1",

doi = "10.1016/j.matchar.2017.05.002",

language = "English",

volume = "129",

pages = "270--281",

journal = "Materials Characterization",

issn = "1044-5803",

publisher = "Elsevier Inc.",

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TY - JOUR

T1 - Precipitation in a novel maraging steel F1E

T2 - A study of austenitization and aging using small angle neutron scattering

AU - Gray, V.

AU - Galvin, D.

AU - Sun, L.

AU - Gilbert, E. P.

AU - Martin, T.

AU - Hill, P.

AU - Rawson, M.

AU - Perkins, K.

PY - 2017/7/1

Y1 - 2017/7/1

N2 - The effect of austenitization temperature, aging temperature, and, aging time on the development of precipitates in a novel maraging steel known as F1E was investigated. The investigation primarily employed small angle neutron scattering (SANS) coupled with thermal calculations, atom probe tomography (APT) and electron microscopy (SEM, STEM, TEM). This large scale study investigated austenitization temperatures of 825, 870 and 960 °C with aging of 0, 1, 2.5, 5, 7.5, 10 and 24 h conducted at 540 °C. For austenitization at 960 °C, aging at 520 °C and 560 °C was also conducted for the same aging times. This yielded 32 conditions where the size, shape and volume fraction of three different precipitates were determined, namely a pre-existing laves phase, a developing laves phase, and a developing β phase. Also observed in this study was a significant change in microstructure of the pre-existing laves precipitate as a result of aging time.

AB - The effect of austenitization temperature, aging temperature, and, aging time on the development of precipitates in a novel maraging steel known as F1E was investigated. The investigation primarily employed small angle neutron scattering (SANS) coupled with thermal calculations, atom probe tomography (APT) and electron microscopy (SEM, STEM, TEM). This large scale study investigated austenitization temperatures of 825, 870 and 960 °C with aging of 0, 1, 2.5, 5, 7.5, 10 and 24 h conducted at 540 °C. For austenitization at 960 °C, aging at 520 °C and 560 °C was also conducted for the same aging times. This yielded 32 conditions where the size, shape and volume fraction of three different precipitates were determined, namely a pre-existing laves phase, a developing laves phase, and a developing β phase. Also observed in this study was a significant change in microstructure of the pre-existing laves precipitate as a result of aging time.

KW - Aging

KW - Maraging

KW - Precipitation

KW - SANS

KW - Steel

UR - https://www.scopus.com/pages/publications/85019210120

U2 - 10.1016/j.matchar.2017.05.002

DO - 10.1016/j.matchar.2017.05.002

M3 - Article (Academic Journal)

AN - SCOPUS:85019210120

SN - 1044-5803

VL - 129

SP - 270

EP - 281

JO - Materials Characterization

JF - Materials Characterization

ER -

Precipitation in a novel maraging steel F1E: A study of austenitization and aging using small angle neutron scattering

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