|
| Abstract No.: |
|
Scheduled at:
|
Thursday, May 22, 2014, Hall H2 4:20 PM
Modeling & Simulation 2
|
|
| Title: |
Transient thermal analysis of NiCrBSi coatings manufactured via hybrid plasma spray process by finite element analysis
|
|
| Authors: |
Sophie Costil / IRTES-LERMPS / UTBM, France
Jiangwei Liu* / IRTES-LERMPS, UTBM,, France
Rodolphe Bolot/ IRTES-LERMPS, UTBM,, France
|
|
| Abstract: |
To improve the performance of thermal spray coatings, several developments are explored such as hybrid processes. One route may consist in combining thermal spray with laser technology. But analyzing the transient thermal variation during the deposition of hybrid plasma sprayed coatings remains essential since it affects the microstructure and properties of coatings. This study aims at evaluating the variation of temperature with effect of an in situ laser remelting treatment. In this study, finite element analysis combined with experimental observation were conducted to clarify the heat transfer performance and temperature variation of NiCrBSi coatings manufactured by plasma spraying in situ laser remelting process. The coating formation was performed by assuming a layer-by-layer deposition mode with the help of ANSYS, where the thermal contribution of laser was taken into account to simulate the remelting process. The effects of solidification and cooling of remelted coatings is taken into account by defining the enthalpy of the material as a function of temperature. The variation of temperatures is investigated, which agrees well with the experimental measurements. The depth of the melting pool is calculated, which is related to the laser energy density, spray velocity, cooling conditions, and thermal properties of the materials, etc.
|
|