Effect of quenching rate on hydrogen attack resistance in a 3Cr-Mo steel
- Univ. of California, Berkeley (USA)
Hydrogen attack in a phenomenon which commonly occurs in pressure vessel steels subjected to gaseous hydrogen environments at high temperatures and pressures, and involves the formation of internally pressurized methane. Recently a class of 3Cr-Mo steels has been developed with greatly improved hardenability and hydrogen attack resistance compared to 2.25Cr-lMo steels. Early versions, containing 1% Mn, were found to be somewhat susceptible to hydrogen damage following very slow cooling rates after austenitization. Such treatments were found to result in excess retained austenite, which on subsequent tempering promoted the formation of Fe{sub 3}C which is less stable than alloy carbides in the presence of hydrogen. In the current study, this specific role of cooling rate is studied in a 3Cr-1Mo steel containing 0.5% Mn, and the effect of the transformation of retained austenite on hydrogen attack resistance is examined in detail.
- OSTI ID:
- 5366487
- Report Number(s):
- CONF-840909--
- Journal Information:
- TMS (The Metallurgical Society) Paper Selection; (USA), Journal Name: TMS (The Metallurgical Society) Paper Selection; (USA) Vol. 56; ISSN 0197-1689; ISSN TMPSA
- Country of Publication:
- United States
- Language:
- English
Similar Records
The early stages of tempering in a 3Cr-1. 5Mo steel
Low-alloy steels for thick-walled pressure vessels. Summary report, February 1, 1980-January 31, 1982
Related Subjects
360103* -- Metals & Alloys-- Mechanical Properties
ALKANES
ALLOYS
AUSTENITE
CARBIDES
CARBON ADDITIONS
CARBON COMPOUNDS
CHROMIUM-MOLYBDENUM STEELS
CONTAINERS
COOLING
CORROSION RESISTANCE
EMBRITTLEMENT
HEAT TREATMENTS
HYDROCARBONS
HYDROGEN EMBRITTLEMENT
IRON ALLOYS
IRON CARBIDES
IRON COMPOUNDS
MANGANESE ADDITIONS
MANGANESE ALLOYS
METALLURGICAL EFFECTS
METHANE
ORGANIC COMPOUNDS
PHASE TRANSFORMATIONS
PRESSURE VESSELS
QUENCHING
SYNTHESIS
TEMPERING
TRANSITION ELEMENT COMPOUNDS