Multi-phase Flow Modelling of Laser Cladding Process with T15 High Speed Steel Particles

Wang Xiangyu1,2,3; Wang Gang1,2,3; Luo Sheng4; You Haoxin; Rong Yiming

2019-02

10.11933/j.issn.1007-9289.20181026001

China Surface Engineering   影响因子和分区

1007-9289

During the laser cladding process, the transport phenomenon in the molten pool are complex including intense energy input, mass addition, strong fluid flow, rapid solidification, melting and species transport. In order to simulate the process of depositing T15 powders on 42CrMo base steel through laser cladding, a multiphase species transport model was developed in which CLSVOF method was adopted to capture the gas-liquid interface and source terms were precisely added under the interface serving as the energy input and mass addition. The model was validated by several characteristic parameters of cladding layers obtained by single track cladding experiments. As the sulphur content of T15 was relatively high, which changed the direction of Marangoni force, the molten pool showed an obvious inward flow pattern. Results show that high temperature fluids are driven downward and consequently a deep fusion penetration is achieved. The consistence of charactistic parameters including cladding height, depth and dilution between experiment and simulation results under different process parameters indicate that the model is operative in investigating the laser cladding process.

laser cladding multiphase flow marangoni effect surface active element

ESCI ; EI

中文

其他

National Natural Science Foundation of China[51535011] ; National Natural Science Foundation of China[U1537202]

Materials Science

Materials Science, Coatings & Films

WOS:000466583500014

CHINESE ASSOC SCIENCE & TECHNOLOGY-CAST

20192106960652

Binary alloys ; Chromium alloys ; Chromium steel ; Cladding (coating) ; Flow patterns ; High speed steel ; Laser cladding ; Molybdenum alloys ; Molybdenum steel ; Multiphase flow ; Phase interfaces ; Rapid solidification

Chromium and Alloys:543.1 ; Molybdenum and Alloys:543.3 ; Fluid Flow, General:631.1 ; Laser Applications:744.9 ; Physical Chemistry:801.4 ; Physical Properties of Gases, Liquids and Solids:931.2

Web of Science

zgbmgc201901015

1.Tsinghua Univ, State Key Lab Tribol, Beijing 100084, Peoples R China;
2.Tsinghua Univ, Inst Mfg Engn, Beijing 100084, Peoples R China;
3.Tsinghua Univ, Beijing Key Lab Precis Ultra Precis Mfg Equipment, Beijing 100084, Peoples R China;
4.Southern Univ Sci & Technol, Mech & Energy Engn Dept, Shenzhen 518055, Peoples R China

Wang Xiangyu,Wang Gang,Luo Sheng,et al. Multi-phase Flow Modelling of Laser Cladding Process with T15 High Speed Steel Particles[J]. China Surface Engineering,2019,32(1):117-123.

Wang Xiangyu,Wang Gang,Luo Sheng,You Haoxin,&Rong Yiming.(2019).Multi-phase Flow Modelling of Laser Cladding Process with T15 High Speed Steel Particles.China Surface Engineering,32(1),117-123.

Wang Xiangyu,et al."Multi-phase Flow Modelling of Laser Cladding Process with T15 High Speed Steel Particles".China Surface Engineering 32.1(2019):117-123.