INFLUENCE OF POSTWELD HEAT-TREATMENT ON CREEP-PROPERTIES OF 1CR-0.5MOWELDED-JOINTS

Authors
WU R STORESUND J SANDSTROM R
Citation
R. Wu et al., INFLUENCE OF POSTWELD HEAT-TREATMENT ON CREEP-PROPERTIES OF 1CR-0.5MOWELDED-JOINTS, Materials science and technology, 9(9), 1993, pp. 773-780
Citations number
16
Categorie Soggetti
Metallurgy & Mining","Material Science
Journal title
Materials science and technology → ACNP
ISSN journal
02670836
Volume
9
Issue
9
Year of publication
1993
Pages
773 - 780
Database
ISI
SICI code
0267-0836(1993)9:9<773:IOPHOC>2.0.ZU;2-B
Abstract
The effect of postweld heat treatment on creep properties of manual me tal arc welded joints of thick walled pipe of 1Cr-0.5 Mo steel has bee n studied at 550-degrees-C. The creep properties were determined for p arent and weld metal in addition to those for crossweld specimens with controlled microstructures such as refined and coarse grained heat af fected zones. Metallographical investigation of cavitation on ruptured samples was also performed. A reduction in creep life and an increase in ductility were observed, in comparison with the as welded conditio n. A beneficial influence of grain refinement in the heat affected zon e was observed giving a reduced number of creep cavities.