Sintering densification mechanism of binder jet 3D printing 316L stainless steel parts via dimensional compensation technology

被引：0
|
作者：
Chen, Zhiping [1 ,2 ]
Wan, Bingbing [1 ,2 ]
Liu, Junchen [3 ]
Zhu, Dezhi [3 ]
Wang, Hao [3 ]
Chen, Weiping [3 ]
Li, Runxia [1 ,2 ,7 ]
Jiang, Zhenfei [3 ,4 ,5 ]
Liu, Fangfang [6 ]
机构：
[1] Dongguan Univ Technol, Res Inst Interdisciplinary Sci, Dongguan 523808, Peoples R China
[2] Dongguan Univ Technol, Sch Mat Sci & Engn, Dongguan 523808, Peoples R China
[3] South China Univ Technol, Guangdong Key Lab Adv Met Mat Proc, Guangzhou 510641, Peoples R China
[4] Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloy Net Forming &State K, 800 Dongchuan Rd, Shanghai 200240, Peoples R China
[5] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, 800 Dongchuan Rd, Shanghai 200240, Peoples R China
[6] Guangdong Univ Sci & Technol, Dept Electromech Engn, Dongguan 523083, Peoples R China
[7] Dongguan Univ Technol, Dongguan Inst Sci & Technol Innovat, Dongguan 523808, Peoples R China
来源：
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2024年 / 33卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Binder jet 3D printing; Sintering densification; Finite-element method; Dimensional compensation; Mechanical properties; MICROSTRUCTURAL EVOLUTION; POWDER; DISCRETE; STRENGTH; DENSITY; GREEN; SIZE;
D O I：
10.1016/j.jmrt.2024.10.041
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The dimensional compensation technology can achieve high dense metal parts with precise dimensions for binder jet 3D printing (BJ3DP). In this study, two models (cuboid and gear) of BJ3DP 316L stainless steel (BJ3DP316LSS) parts were established. Numerical simulation and experimental volume shrinkage of the BJ3DP316LSS sintered parts via dimensional compensations technology were investigated. When the dimensional compensation coefficient was set as 1.25, the BJ3DP316LSS cuboids and gears exhibited high densification as 99.6% and 99.4%, respectively. The experimental dimension deviation rates of cuboid and gear parts after dimensional compensations ranged from -3.56% to -0.15% and from 0.89% to 3.42%, respectively. Due to twinning-induced plasticity mechanism, the BJ3DP316LSS sintered gear part via dimensional compensation technology exhibited high hardness (similar to 139 HV), high yield strength (similar to 249 MPa), high ultimate tensile strength (similar to 546 MPa) and excellent elongation (similar to 62%), which are higher than those of the reported 316LSS samples.
引用
收藏
页码：3296 / 3307
页数：12
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