Formation of delta ferrite in 9 Wt Pct Cr steel investigated by in-situ x-ray diffraction using synchrotron radiation

P. Mayr, Todd Palmer, J. W. Elmer, E. D. Specht, S. M. Allen

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

A study was conducted to demonstrate the monitoring of the formation and dissolution of δ-ferrite in a 9 wt pct chromium steel using in-situ X-ray diffraction (XRD) with synchrotron radiation during exposure to a single-weld thermal cycle. A 100-kg ingot of an experimental Fe-0.168C-0.23Si-0.22Mn-8.85Cr- 1.54Mo-0.18Ni-0.29V-0.057Nb-0.009B-0.016N steel was produced by conventional sand casting. It was normalized at temperature of 1373 K for 8 hours and then allowed to air cool at room temperature and tempered again for an additional 24 hours at the same temperature after air cooling at room temperature tempered at 1003 K for 10 hours. A tempered martensite microstructure without any delta ferrite was observed and finely dispersed precipitates were identified by analytical transmission electron microscopy as Cr-rich M23C 6 carbides, V-rich MX nitrides, and Nb-rich MX carbides.

Original languageEnglish (US)
Pages (from-to)2462-2465
Number of pages4
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume41
Issue number10
DOIs
StatePublished - Oct 1 2010

Fingerprint

Steel
Synchrotron radiation
carbides
Ferrite
ferrites
synchrotron radiation
x ray diffraction
sand casting
Diffraction
chromium steels
steels
air cooling
X rays
radiation dosage
ingots
room temperature
martensite
nitrides
Carbides
precipitates

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

Cite this

@article{18a1c34754ae4500a025c417e5dfa7a6,
title = "Formation of delta ferrite in 9 Wt Pct Cr steel investigated by in-situ x-ray diffraction using synchrotron radiation",
abstract = "A study was conducted to demonstrate the monitoring of the formation and dissolution of δ-ferrite in a 9 wt pct chromium steel using in-situ X-ray diffraction (XRD) with synchrotron radiation during exposure to a single-weld thermal cycle. A 100-kg ingot of an experimental Fe-0.168C-0.23Si-0.22Mn-8.85Cr- 1.54Mo-0.18Ni-0.29V-0.057Nb-0.009B-0.016N steel was produced by conventional sand casting. It was normalized at temperature of 1373 K for 8 hours and then allowed to air cool at room temperature and tempered again for an additional 24 hours at the same temperature after air cooling at room temperature tempered at 1003 K for 10 hours. A tempered martensite microstructure without any delta ferrite was observed and finely dispersed precipitates were identified by analytical transmission electron microscopy as Cr-rich M23C 6 carbides, V-rich MX nitrides, and Nb-rich MX carbides.",
author = "P. Mayr and Todd Palmer and Elmer, {J. W.} and Specht, {E. D.} and Allen, {S. M.}",
year = "2010",
month = "10",
day = "1",
doi = "10.1007/s11661-010-0371-7",
language = "English (US)",
volume = "41",
pages = "2462--2465",
journal = "Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science",
issn = "1073-5623",
publisher = "Springer Boston",
number = "10",

}

Formation of delta ferrite in 9 Wt Pct Cr steel investigated by in-situ x-ray diffraction using synchrotron radiation. / Mayr, P.; Palmer, Todd; Elmer, J. W.; Specht, E. D.; Allen, S. M.

In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, Vol. 41, No. 10, 01.10.2010, p. 2462-2465.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Formation of delta ferrite in 9 Wt Pct Cr steel investigated by in-situ x-ray diffraction using synchrotron radiation

AU - Mayr, P.

AU - Palmer, Todd

AU - Elmer, J. W.

AU - Specht, E. D.

AU - Allen, S. M.

PY - 2010/10/1

Y1 - 2010/10/1

N2 - A study was conducted to demonstrate the monitoring of the formation and dissolution of δ-ferrite in a 9 wt pct chromium steel using in-situ X-ray diffraction (XRD) with synchrotron radiation during exposure to a single-weld thermal cycle. A 100-kg ingot of an experimental Fe-0.168C-0.23Si-0.22Mn-8.85Cr- 1.54Mo-0.18Ni-0.29V-0.057Nb-0.009B-0.016N steel was produced by conventional sand casting. It was normalized at temperature of 1373 K for 8 hours and then allowed to air cool at room temperature and tempered again for an additional 24 hours at the same temperature after air cooling at room temperature tempered at 1003 K for 10 hours. A tempered martensite microstructure without any delta ferrite was observed and finely dispersed precipitates were identified by analytical transmission electron microscopy as Cr-rich M23C 6 carbides, V-rich MX nitrides, and Nb-rich MX carbides.

AB - A study was conducted to demonstrate the monitoring of the formation and dissolution of δ-ferrite in a 9 wt pct chromium steel using in-situ X-ray diffraction (XRD) with synchrotron radiation during exposure to a single-weld thermal cycle. A 100-kg ingot of an experimental Fe-0.168C-0.23Si-0.22Mn-8.85Cr- 1.54Mo-0.18Ni-0.29V-0.057Nb-0.009B-0.016N steel was produced by conventional sand casting. It was normalized at temperature of 1373 K for 8 hours and then allowed to air cool at room temperature and tempered again for an additional 24 hours at the same temperature after air cooling at room temperature tempered at 1003 K for 10 hours. A tempered martensite microstructure without any delta ferrite was observed and finely dispersed precipitates were identified by analytical transmission electron microscopy as Cr-rich M23C 6 carbides, V-rich MX nitrides, and Nb-rich MX carbides.

UR - http://www.scopus.com/inward/record.url?scp=78149279972&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=78149279972&partnerID=8YFLogxK

U2 - 10.1007/s11661-010-0371-7

DO - 10.1007/s11661-010-0371-7

M3 - Article

AN - SCOPUS:78149279972

VL - 41

SP - 2462

EP - 2465

JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

SN - 1073-5623

IS - 10

ER -