Phase transformations and microstructure development in low alloy steel welds

Conference · Sat Jul 01 00:00:00 EDT 1995

OSTI ID:86931

Babu, S S; David, S A; Vitek, J M ^[1]

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1. and others

Microstructure development in low alloy steel welds depends on various phase transformations that are a function of weld heating and cooling. The phase changes include non-metallic oxide inclusion formation in the liquid state, weld pool solidification, and solid state transformations. In this paper the mechanism of inclusion formation during low alloy steel welding is considered and the model predictions are compared with published results. The effect of inclusions on the austenite to ferrite transformation kinetics is measured and the mechanisms of transformation are discussed. The austenite gain development is related to the driving force for transformation of {delta} ferrite to austenite.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 86931
• Report Number(s): CONF-9508134-1; ON: DE95014284; TRN: 95:005523
• Resource Relation: Conference: International symposium on phase transformations during thermal/mechanical processing of steel, Vancouver (Canada), 20-23 Aug 1995; Other Information: PBD: [1995]
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AUSTENITIC STEELS
PHASE TRANSFORMATIONS
FERRITIC STEELS
MICROSTRUCTURE
WELDED JOINTS
MATHEMATICAL MODELS
GRAIN SIZE
INCLUSIONS