Formation of Delta Ferrite in 9 Wt Pct Cr Steel Investigated by In-Situ X-Ray Diffraction Using Synchrotron RadiationReportar como inadecuado




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Metallurgical and Materials Transactions A

, Volume 41, Issue 10, pp 2462–2465

First Online: 27 July 2010

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.

P. Mayr is on leave from the Institute for Materials Science and Welding, Graz University of Technology, 8010 Graz, Austria.

Manuscript submitted May 3, 2010.

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Autor: P. Mayr - T.A. Palmer - J.W. Elmer - E.D. Specht - S.M. Allen

Fuente: https://link.springer.com/



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