TY - GEN
T1 - New Low Chromium Ferritic Pressure Vessel Steels
AU - Todd, J. A.
AU - Swindeman, R. W.
AU - Klueh, R. L.
N1 - Funding Information:
This research was sponsored by the U.S. Department of Energy, Surface Gasification Materials Program (DOE/FE AA 85 45 10 0), under Contract DE-AC05-840R21400 with Martin Marietta Energy Systems, Inc. J. A. Todd gratefully acknowledges support from an Oak Ridge Associated Universities Visiting Faculty Research Award held in the Metals and Ceramics Division, ORNL, June 1986.
Publisher Copyright:
Copyright © 1988 by ASTM International.
PY - 1988
Y1 - 1988
N2 - Much progress has been made in developing chromium-molybdenum steels with improved hardenability, elevated temperature strength, toughness, and resistance to environment. The new low alloy steels, intended for heavy-wall pressure vessels operating at temperatures in excess of 450°C and pressures up to 30 MPa, are fully bainitic for maximum strength and toughness, and are resistant to temper embrittlement, hydrogen embrittlement, and hydrogen attack. Microstructural studies have shown that alloys containing 3%Cr and 1.5%Mo exhibit improved heat treating characteristics as they rapidly temper to produce stable alloy carbides, which are resistant to hydrogen attack. Such steels could replace 2.25Cr-lMo steel for service to 480°C. Higher creep strengths can be achieved in modifications of 2.25Cr-IMo or 3Cr-Mo steels containing up to 0.25% vanadium.
AB - Much progress has been made in developing chromium-molybdenum steels with improved hardenability, elevated temperature strength, toughness, and resistance to environment. The new low alloy steels, intended for heavy-wall pressure vessels operating at temperatures in excess of 450°C and pressures up to 30 MPa, are fully bainitic for maximum strength and toughness, and are resistant to temper embrittlement, hydrogen embrittlement, and hydrogen attack. Microstructural studies have shown that alloys containing 3%Cr and 1.5%Mo exhibit improved heat treating characteristics as they rapidly temper to produce stable alloy carbides, which are resistant to hydrogen attack. Such steels could replace 2.25Cr-lMo steel for service to 480°C. Higher creep strengths can be achieved in modifications of 2.25Cr-IMo or 3Cr-Mo steels containing up to 0.25% vanadium.
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U2 - 10.1520/STP29125S
DO - 10.1520/STP29125S
M3 - Conference contribution
AN - SCOPUS:85166923208
T3 - ASTM Special Technical Publication
SP - 83
EP - 115
BT - MiCon 1986 - Optimization of Processing, Properties, and Service Performance Through Microstructural Control
A2 - Bramfitt, Bruce L.
A2 - Benn, Raymond C.
A2 - Brinkman, Charles R.
A2 - Vander Voort, George F.
PB - ASTM International
T2 - 1986 Symposium on Optimization of Processing, Properties, and Service Performance Through Microstructural Control, MiCon 1986
Y2 - 15 May 1986 through 16 May 1986
ER -