Effect of convection on weld pool development
A computational study of the transient convective phenomena in the weld pool during gas tungsten arc (GTA) welding of Type 304 stainless steel is presented. The solution of the transport equations is based on a control volume approach that directly utilizes the integral form of the governing equations. The computational model considers buoyancy and electromagnetic and surface tension forces in the solution of convective heat transfer in the weld pool. In addition, the model includes weld metal vaporization and temperature-dependent thermophysical properties. The results confirm that the development of the weld pool is very sensitive to the convective flow in the weld pool. Theoretical predictions of the weld pool surface temperature distributions and the cross-sectional weld pool size and shape were compared with corresponding experimental measurements with good agreement. 23 refs., 9 figs., 3 tabs.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5409282
- Report Number(s):
- CONF-911003-3; ON: DE91014213
- Resource Relation:
- Conference: Fall meeting of the Minerals, Metals and Materials Society of AIME and Materials Week of the American Society of Metals, Cincinnati, OH (United States), 20-24 Oct 1991
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
METALS
CONVECTION
STAINLESS STEEL-304
GAS TUNGSTEN-ARC WELDING
EVAPORATION
HEAT TRANSFER
WELDED JOINTS
ALLOYS
ARC WELDING
AUSTENITIC STEELS
CHROMIUM ALLOYS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
ELEMENTS
ENERGY TRANSFER
FABRICATION
GAS METAL-ARC WELDING
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
JOINING
JOINTS
MASS TRANSFER
MATERIALS
NICKEL ALLOYS
PHASE TRANSFORMATIONS
STAINLESS STEELS
STEEL-CR19NI10
STEELS
WELDING
360101* - Metals & Alloys- Preparation & Fabrication
420400 - Engineering- Heat Transfer & Fluid Flow