Formation of delta ferrite in 9 wt.% Cr steel investigated by in-situ X-ray diffraction using synchrotron radiation
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MMTA_XRD_Mayr_submitted2.pdf
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6.35 MB
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Checksum (MD5)
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Author(s)
Mayr, Peter
Palmer, T. A.
Elmer, J. W.
Specht, E. D.
Allen, Samuel Miller
Date Issued
October 2010
Journal
Metallurgical and Materials Transactions A
Publisher
Springer-Boston
Citation
Mayr, P. et al. “Formation of Delta Ferrite in 9 Wt Pct Cr Steel Investigated by In-Situ X-Ray Diffraction Using Synchrotron Radiation.” Metallurgical and Materials Transactions A 41.10 (2010): 2462–2465. Web.
Version
Author's final manuscript
Abstract
In-situ X-ray diffraction (XRD) measurements using high energy synchrotron radiation were performed to monitor in real time the formation of delta ferrite in a martensitic 9 wt pct chromium steel under simulated weld thermal cycles. Volume fractions of martensite, austenite, and delta ferrite were measured as a function of temperature at a 10 K/s heating rate to 1573 K (1300 °C) and subsequent cooling. At the peak temperature, the delta ferrite concentration rose to 19 pct, of which 17 pct transformed back to austenite on subsequent cooling.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
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Creative Commons Attribution-Noncommercial-Share Alike 3.0
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DOI of Published Version
https://doi.org/10.1007/s11661-010-0371-7
