Additive manufacturing of steel-copper functionally graded material with ultrahigh bonding strength

被引：95

作者：

Tan, Chaolin ^{[1
,2
,3
]}

Chew, Youxiang ^{[3
]}

Bi, Guijun ^{[3
]}

Wang, Di ^{[1
]}

Ma, Wenyou ^{[2
]}

Yang, Yongqiang ^{[1
]}

Zhou, Kesong ^{[2
]}

机构：

[1] South China Univ Technol, Sch Mech & Automot Engn, Guangzhou 510640, Peoples R China

[2] Guangdong Acad Sci, Inst New Mat, Natl Engn Lab Modern Mat Surface Engn Technol, Guangzhou 510651, Peoples R China

[3] ASTAR, Singapore Inst Mfg Technol, 73 Nanyang Dr, Singapore 637662, Singapore

来源：

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2021年 / 72卷

基金：

中国国家自然科学基金;

关键词：

Laser powder bed fusion; Steel-copper multi-materials; Fatigue; Functionally graded materials; Bonding strength; MECHANICAL-PROPERTIES; MARAGING-STEEL; LASER; BEHAVIOR; SLM; CU;

D O I：

10.1016/j.jmst.2020.07.044

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Additive manufacturing enables processing of functionally graded materials (FGMs) with flexible spatial design and high bonding strength. A steel-copper FGM with high interfacial strength was developed using laser powder bed fusion (LPBF). The effect of laser process parameters on interfacial defects was evaluated by X-ray tomography, which indicates a low porosity level of 0.042 % therein. Gradient/fine dendritic grains in the interface are incited by high cooling rates, which facilitates interface strengthening. Multiple mechanical tests evaluate the bonding reliability of interface; and the fatigue tests further substantiate the ultrahigh bonding strength in FGMs, which is superior to traditional manufacturing methods. Mechanisms of the high interfacial bond strength were also discussed. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.

引用

页码：217 / 222

页数：6

共 24 条

[1] Thermal and solutal Marangoni convection in In-Ga-Sb system [J].