Numerical estimation of phase transformations in solid state during Yb:YAG laser heating of steel sheets

This work concerns the numerical modeling of heat transfer and phase transformations in solid state occurring during the Yb:YAG laser beam heating process. The temperature field is obtained by the numerical solution into transient heat transfer equation with convective term. The laser beam heat sour...

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Bibliographic Details
Main Authors: Kubiak, Marcin, Piekarska, Wiesława, Domański, Tomasz, Saternus, Zbigniew, Stano, Sebastian
Format: Conference Proceeding
Language:English
Subjects:
ALGORITHMS
Computer simulation
COMPUTERIZED SIMULATION
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
COOLING
DIAGRAMS
HEAT SOURCES
HEAT TRANSFER
Heat treating
INTERPOLATION
KRIGING
Kriging interpolation
Laser beam heating
LASER-RADIATION HEATING
Lasers
Mathematical models
Metal sheets
NEODYMIUM LASERS
PHASE TRANSFORMATIONS
Phase transitions
Semiconductor lasers
Solid state
SOLIDS
STEELS
Temperature distribution
TRANSFORMATIONS
Transient heat transfer
TRANSIENTS
YAG lasers
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Summary:This work concerns the numerical modeling of heat transfer and phase transformations in solid state occurring during the Yb:YAG laser beam heating process. The temperature field is obtained by the numerical solution into transient heat transfer equation with convective term. The laser beam heat source model is developed using the Kriging interpolation method with experimental measurements of Yb:YAG laser beam profile taken into account. Phase transformations are calculated on the basis of Johnson - Mehl - Avrami (JMA) and Koistinen - Marburger (KM) kinetics models as well as continuous heating transformation (CHT) and continuous cooling transformation (CCT) diagrams for S355 steel. On the basis of developed numerical algorithms 3D computer simulations are performed in order to predict temperature history and phase transformations in Yb:YAG laser heating process.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4913124