Interfacial tension driven fluid flow model for hot cracking

Journal Article · Wed Apr 01 04:00:00 EST 1992 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(92)90240-F· OSTI ID:7019776

Holt, M ^[1]; Olson, D L; Cross, C E ^[2]

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1. Group of Welding and Non Destructive Testing, Delft Univ. of Technology (Netherlands)
2. Center for Welding and Joining Research, Colorado School of Mines, Golden, CO (United States)

One of the most common defects encountered during the welding and casting of stainless steels and many other alloys is solidification cracking. Solidification cracking, known as hot cracking in the welding industry, occurs due to the presence of low-melting liquid films that allow boundaries to separate when thermal and shrinkage stresses develop during solidification and cooling. Several models have been proposed to explain hot cracking behavior and to calculate the hot cracking tendencies observed for different alloys. This paper will combine a hot cracking model of the latter group, proposed by Fuerer, with the concept of interfacial tension driven fluid flow, to suggest a mechanism that promotes interdendritic cracking tendencies.

• OSTI ID: 7019776
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 26:7; ISSN 0956-716X; ISSN SCRMEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
ALLOYS
CASTING
CHEMICAL COMPOSITION
CRACK PROPAGATION
FABRICATION
FLOW MODELS
FLUID FLOW
FRACTURE MECHANICS
HEAT TREATMENTS
HIGH ALLOY STEELS
INTERFACES
IRON ALLOYS
IRON BASE ALLOYS
JOINING
MATERIALS WORKING
MATHEMATICAL MODELS
MECHANICS
PHASE STUDIES
PHASE TRANSFORMATIONS
SOLIDIFICATION
STAINLESS STEELS
STEELS
STRESSES
TEMPERATURE EFFECTS
THERMAL STRESSES
THERMOMECHANICAL TREATMENTS
WELDING