On Intertrack Fluctuation of Hardness and Carbides in T15 Steel Laser Cladding Using Thermodynamic Calculation

Liu, Xianyue1,2; Wang, Gang2; Ren, Ke1; Zhang, Jianlong3; Wang, Liping2; Rong, Yiming1

2023-06-01

10.1007/s11665-023-08405-3

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE   影响因子和分区

1059-9495

1544-1024

Intertrack fluctuation of microstructure and mechanical properties is one of the important characteristics for nonuniformity in laser cladding processes. The understanding of the fluctuation helps to improve the wear resistance of deposited materials. In this paper, the phase structure, element distribution, hardness variation and carbides were identified and compared between the cladding zone (CZ) and the heat-affected zone (HAZ) in T15 steel laser cladding. A calculation method was proposed to reveal the physics of the solidification and precipitation behavior of carbides by combining the finite element method (FEM) and thermodynamic calculations. The results showed that the hardness of the intertrack HAZ was higher than the hardness of the CZ due to the high amount and small size of vanadium carbide (VC) particles. The calculation proved that the major strengthening phase was VC precipitate, while tungsten carbide (WC) was not stable in the cooling process and converted to Fe3W3C. The volume fraction of VC in the HAZ was 14.3%, which was higher than the volume fraction in the CZ, which was only 10.0%. The high temperature was prone to a high volume fraction and many VC precipitates with a small radius in the intertrack HAZ, which qualitatively agreed with the experimental characterization.

carbides hardness variation intertrack fluctuation laser cladding T15 steel thermodynamic calculations

SCI ; EI

英语

第一

Natural Science Foundation of China[52075282] ; Shenzhen Science and Technology Program[KQTD20170328154443162]

Materials Science

Materials Science, Multidisciplinary

WOS:001014984900004

SPRINGER

20232514269872

Hardness ; Heat affected zone ; Iron compounds ; Thermodynamics ; Vanadium compounds ; Volume fraction ; Wear resistance

Welding:538.2 ; Thermodynamics:641.1 ; Laser Applications:744.9 ; Coating Techniques:813.1 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Materials Science:951

MATERIALS SCIENCE

Web of Science

1.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen, Peoples R China
2.Tsinghua Univ, Beijing Key Lab Precis Ultraprecis Mfg Equipments, Beijing, Peoples R China
3.Xidian Univ, Sch Elect Engn, Xian, Peoples R China

Liu, Xianyue,Wang, Gang,Ren, Ke,et al. On Intertrack Fluctuation of Hardness and Carbides in T15 Steel Laser Cladding Using Thermodynamic Calculation[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,2023.

Liu, Xianyue,Wang, Gang,Ren, Ke,Zhang, Jianlong,Wang, Liping,&Rong, Yiming.(2023).On Intertrack Fluctuation of Hardness and Carbides in T15 Steel Laser Cladding Using Thermodynamic Calculation.JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE.

Liu, Xianyue,et al."On Intertrack Fluctuation of Hardness and Carbides in T15 Steel Laser Cladding Using Thermodynamic Calculation".JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE (2023).