Comprehensive modeling of transport phenomena in laser hot-wire deposition process

Wei, Shaopeng1,2; Wang, Gang1; Shin, Yung C.2; Rong, Yiming1,3

2018-10

10.1016/j.ijheatmasstransfer.2018.04.164

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER   影响因子和分区

0017-9310

1879-2189

Transport phenomena in the molten pool and heat affected zone during the laser hot-wire deposition process are intrinsically complex. These phenomena involve multi-phase flows on the millimeter scale, including surface tension and capillary effects at the gas-liquid interface, solid-liquid phase transition, heat input from the laser beam source, and mass addition from the filler wire. Thus, a comprehensive multi-phase model was proposed in this study, which elucidates the evolution of the gas-liquid-solid interfaces during the laser hot-wire deposition process. A coupled level-set and volume-of-fluid approach was adopted to track the motion of the free surface with high resolution while ensuring that mass conservation was not violated. The mass addition from the preheated filler wire was modeled as the source terms in the continuity and energy equations. The simulation results include the geometries of the molten pool and clad layer, Marangoni outward flow effect and temperature evolution during the deposition. The multi-phase model was validated based on the geometries of the fusion zone and clad layer determined from laser conduction welding and laser hot-wire deposition experiments. The mechanism of cladding formation (specifically the microstructural and microhardness gradients in the deposited FV52013 maraging steel) was analyzed based on the temperature profile of various phase transition regions in the heat affected zone. (C) 2018 Elsevier Ltd. All rights reserved.

Multi-phase modeling Laser hot-wire deposition Free surface tracking Transport phenomena Heat affected zone

SCI ; EI

英语

其他

National Natural Science Foundation of China[U1537202]

Thermodynamics ; Engineering ; Mechanics

Thermodynamics ; Engineering, Mechanical ; Mechanics

WOS:000440118600116

PERGAMON-ELSEVIER SCIENCE LTD

20182105216517

Deposition ; Fillers ; Heat affected zone ; Laser beam effects ; Laser beams ; Liquids ; Maraging steel ; Soldered joints ; Transport properties ; Wire

Metal Forming:535.2 ; Soldering:538.1.1 ; Welding:538.2 ; Steel:545.3 ; Laser Beam Interactions:744.8 ; Physical Chemistry:801.4 ; Chemical Operations:802.3 ; Physical Properties of Gases, Liquids and Solids:931.2

ENGINEERING

Web of Science

1.Tsinghua Univ, State Key Lab Tribol, Beijing 100084, Peoples R China
2.Purdue Univ, Ctr Laser Based Mfg, W Lafayette, IN 47907 USA
3.Southern Univ Sci & Technol, Mech & Energy Engn Dept, Shenzhen 518055, Peoples R China

Wei, Shaopeng,Wang, Gang,Shin, Yung C.,et al. Comprehensive modeling of transport phenomena in laser hot-wire deposition process[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2018,125:1356-1368.

Wei, Shaopeng,Wang, Gang,Shin, Yung C.,&Rong, Yiming.(2018).Comprehensive modeling of transport phenomena in laser hot-wire deposition process.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,125,1356-1368.

Wei, Shaopeng,et al."Comprehensive modeling of transport phenomena in laser hot-wire deposition process".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 125(2018):1356-1368.