Melt pool evolution, microstructure and fracture toughness analysis of nickel-based composite coating deposited by laser-based directed energy deposition on 316L stainless steel

被引：1

作者：

Li, Wanyang ^{[1
,2
]}

Liu, Weiwei ^{[1
,2
,3
]}

Ma, Zongyu ^{[1
,2
]}

Liu, Huanqiang ^{[1
,2
]}

Song, Jianrong ^{[1
,2
]}

Li, Tao ^{[1
,2
]}

Liu, Shujie ^{[1
,2
]}

Zhao, Yue ^{[5
]}

Peng, Shitong ^{[4
]}

Wang, Fengtao ^{[4
]}

Zhang, Hongchao ^{[1
,2
]}

机构：

[1] Dalian Univ Technol, Sch Mech Engn, Dalian 116024, Peoples R China

[2] Dalian Univ Technol, State Key Lab High Performance Precis Mfg, Dalian 116024, Peoples R China

[3] Dalian Univ Technol, Ningbo Inst, Ningbo 315000, Peoples R China

[4] Shantou Univ, Coll Engn, Dept Mech Engn, Shantou 515063, Peoples R China

[5] Dalian Minzu Univ, Coll Electromech Engn, Dalian 116600, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2025年 / 1020卷

基金：

中国国家自然科学基金;

关键词：

Melt pool dynamics; Bonding strength; Microstructure; Nano-mechanical properties; Fracture toughness; MECHANICAL-PROPERTIES; MATRIX COMPOSITES; BEHAVIOR; TEXTURE; POWDER; SUPERALLOYS; CONVECTION; PARTICLES; ALLOYS;

D O I：

10.1016/j.jallcom.2025.179348

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This study systematically analyzed the effects of varying SiC content on the melt pool dynamics, bonding strength, microstructure, and mechanical properties of nickel-based composite coatings produced by laser-based directed energy deposition (DED-LB) on 316 L stainless steel substrates. The results showed that increased SiC content significantly altered the melt pool dimensions, with higher SiC content enhancing the thermal conductivity of the composite powder, leading to melt pool expansion and increased fluidity. Surface roughness initially decreased and then increased with overlap ratio, with the 50 % overlap producing the lowest surface roughness and highest bonding strength. Microstructural observations revealed that higher SiC content led to significant grain refinement and promoted uniform distribution of Cr-enriched phases and Si, though excessive SiC content caused carbon aggregation, increasing brittleness in localized regions. Higher SiC content also promoted the formation of carbides and silicides while suppressing the precipitation of existing carbides. Additionally, SiC encouraged the formation of HAGBs. As SiC content increased, nano-mechanical properties, including nano-hardness and elastic modulus, were significantly enhanced, while fracture toughness gradually decreased, indicating increased brittleness.

引用

页数：16

共 51 条

[1] Improving the surface quality and mechanical properties by shot-peening of 17-4 stainless steel fabricated by additive manufacturing [J].

AlMangour, Bandar ;

Yang, Jenn-Ming .

MATERIALS & DESIGN, 2016, 110 :914-924

[2] Machining and heat treatment as post-processing strategies for Ni-superalloys structures fabricated using direct energy deposition [J].

Careri, Francesco ;

Imbrogno, Stano ;

Umbrello, Domenico ;

Attallah, Moataz M. ;

Outeiro, Jose ;

Batista, Antonio C. .

JOURNAL OF MANUFACTURING PROCESSES, 2021, 61 :236-244

[3] Effect of overlap rate and pattern on residual stress in selective laser melting [J].

Chen, Changpeng ;

Yin, Jie ;

Zhu, Haihong ;

Xiao, Zhongxu ;

Zhang, Luo ;

Zeng, Xiaoyan .

INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 2019, 145

[4] Laves phase control and tensile properties optimization of DED-arc repaired 718Plus components through the addition of TiC and Cr2C3 [J].

Chen, Yuanhang ;

Yang, Chunli .

MATERIALS CHARACTERIZATION, 2024, 217

[5] Effects of Marangoni convection on the embedding dynamic behavior of SiC nano-particles into the Al molten pool during laser micro-melting [J].

Cui, C. Y. ;

Li, X. D. ;

Fang, C. ;

Zhang, W. L. ;

Ruan, Z. W. ;

Cui, X. G. ;

Lu, J. Z. ;

Xia, C. D. ;

Lu, Y. F. .

MATERIALS & DESIGN, 2018, 143 :256-267

[6] Microstructure and nanoindentation analysis of Mg-SiC nanocomposite powders synthesized by mechanical milling [J].

Ghasemi, A. ;

Penther, D. ;

Kamrani, S. .

MATERIALS CHARACTERIZATION, 2018, 142 :137-143

[7] Material-structure-performance integrated laser-metal additive manufacturing [J].

Gu, Dongdong ;

Shi, Xinyu ;

Poprawe, Reinhart ;

Bourell, David L. ;

Setchi, Rossitza ;

Zhu, Jihong .

SCIENCE, 2021, 372 (6545) :932-+

[8] Laser absorption behavior of randomly packed powder-bed during selective laser melting of SiC and TiB2 reinforced Al matrix composites [J].

Gu, Dongdong ;

Yang, Ying ;

Xi, Lixia ;

Yang, Jiankai ;

Xia, Mujian .

OPTICS AND LASER TECHNOLOGY, 2019, 119

[9] On the role of powder flow behavior in fluid thermodynamics and laser processability of Ni-based composites by selective laser melting [J].

Gu, Dongdong ;

Xia, Mujian ;

Dai, Donghua .

INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 2019, 137 :67-78

[10] Plastic deformation behavior and dynamic recrystallization of Inconel 625 superalloy fabricated by directed energy deposition [J].

Hu, Y. L. ;

Lin, X. ;

Li, Y. L. ;

Zhang, S. Y. ;

Gao, X. H. ;

Liu, F. G. ;

Li, X. ;

Huang, W. D. .

MATERIALS & DESIGN, 2020, 186

← 1 2 3 4 5 6 →