Microstructure evaluation in low alloy steel weld metal from convective heat transfer calculations in three dimensions

Conference · Sat Dec 30 23:00:00 EST 1995

OSTI ID:212409

Mundra, K; DebRoy, T; Babu, S S ^[1]; David, S A ^[2]

---

1. Pennsylvania State Univ., University Park, PA (United States). Dept. of Materials Science and Engineering
2. Oak Ridge National Lab., TN (United States)

Heat transfer and fluid flow during manual metal arc welding of low alloy steels were investigated by solving the equations of conservation of mass, momentum, and energy in three dimensions. Cooling rates were calculated at various locations in the weldment. Calculated cooling rates were coupled with an existing phase transformation model to predict percentages of acicular, allotriomorphic, and Widmanstaetten ferrites in various low alloy steel welds containing different concentration of V and Mn. Computed microstructures were in good agreement with experiment, indicating promise for predicting weld metal microstructure from the fundamentals of transport phenomena.

• Research Organization: Oak Ridge National Lab., TN (United States); Pennsylvania State Univ., University Park, PA (United States). Dept. of Materials Science and Engineering
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400; FG02-84ER45158
• OSTI ID: 212409
• Report Number(s): CONF-950682--14; ON: DE96005473
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
FLUID FLOW
HEAT TRANSFER
LOW ALLOY STEELS
MICROSTRUCTURE
NUMERICAL SOLUTION
WELDED JOINTS