A comprehensive transformation-thermomechanical model on deformation history in directed energy deposition of high-speed steel

Ren, Ke1,2; Wang, Gang2; Di, Yuelan3; Liu, Xianyue1,2; Wang, Liping2; Rong, Yiming1

2024-12-31

10.1080/17452759.2024.2382164

VIRTUAL AND PHYSICAL PROTOTYPING   影响因子和分区

1745-2759

1745-2767

Phase transformation is a crucial factor that determines the quality and deformation of components in laser-directed energy deposition (L-DED). Owing to the limitations of in situ observation methods, there is a lack of effective means to study the complete phase transformation and their impacts on deformation during the deposition process. In this study, multilayer heterogeneous deposition was investigated with the high-carbon high-speed steel by modelling the coupled phase transformation-thermomechanical physics. The methodology was proposed to identify the specific phase transformations by iteratively comparing the whole deformation history between digital image correlation (DIC) measurements and simulations. Besides the thermo-mechanical coupling effect and basic volumetric phase transformation, carbon partitioning between precipitated carbides and matrix was manifested, which also resulted in a rise of the Ms point by 208.4 degrees C and a reduction of the transformation rate by 73.2%. Additionally, an increase of 13.8% in energy absorption could be attributed to the surface oxidation of the deposited layer. The model predictions exhibited good consistency with the DIC in-situ measurement data, indicating that the deformation history contained sufficient information on the phase transformations. Based on the proposed transformation-thermomechanical coupling model, it helps to understand the complete phase transformation during deposition.

Coupling model phase transformation deformation history carbide precipitation directed energy deposition

SCI ; EI

英语

第一

Engineering ; Materials Science

Engineering, Manufacturing ; Materials Science, Multidisciplinary

WOS:001280667000001

TAYLOR & FRANCIS LTD

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 100084, Peoples R China
3.Army Acad Armored Forces, Natl Key Lab Remfg, Beijing 100072, Peoples R China

Ren, Ke,Wang, Gang,Di, Yuelan,et al. A comprehensive transformation-thermomechanical model on deformation history in directed energy deposition of high-speed steel[J]. VIRTUAL AND PHYSICAL PROTOTYPING,2024,19(1).

Ren, Ke,Wang, Gang,Di, Yuelan,Liu, Xianyue,Wang, Liping,&Rong, Yiming.(2024).A comprehensive transformation-thermomechanical model on deformation history in directed energy deposition of high-speed steel.VIRTUAL AND PHYSICAL PROTOTYPING,19(1).

Ren, Ke,et al."A comprehensive transformation-thermomechanical model on deformation history in directed energy deposition of high-speed steel".VIRTUAL AND PHYSICAL PROTOTYPING 19.1(2024).