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- Title
Formation of Delta Ferrite in 9 Wt Pct Cr Steel Investigated by In-Situ X-Ray Diffraction Using Synchrotron Radiation.
- Authors
Mayr, P.; Palmer, T. A.; Elmer, J. W.; Specht, E. D.; Allen, S. M.
- 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.
- Subjects
SYNCHROTRON radiation; FERRITES; MARTENSITIC transformations; CHROMIUM; SOLDER &; soldering
- Publication
Metallurgical & Materials Transactions. Part A, 2010, Vol 41, Issue 10, p2462
- ISSN
1073-5623
- Publication type
Article
- DOI
10.1007/s11661-010-0371-7