Interfacial Microstructure and Mechanical Properties of Steel-copper Heterostructure Prepared by Selective Laser Melting

被引：0

作者：

Li Z. ^{[1
]}

Chen Y. ^{[2
]}

Liu B. ^{[2
]}

Kuai Z. ^{[2
]}

Lu S. ^{[2
]}

Shi J. ^{[1
]}

机构：

[1] School of Materials Science and Engineering, North University of China, Shanxi, Taiyuan

[2] School of Mechanical Engineering, North University of China, Shanxi, Taiyuan

来源：

Binggong Xuebao/Acta Armamentarii | 2023年 / 44卷 / 02期

关键词：

hybrid manufacture; interface bonding; mechanical properties; microstructure; selective laser melting;

D O I：

10.12382/bgxb.2021.0721

中图分类号：

学科分类号：

摘要：

The composite forming by machining and selective laser melting (SLM) can realize the formation of parts with high efficiency, low cost and heterogeneous materials. The preparation of copper alloy with high thermal conductivity by SLM on the high-strength machined steel substrate was investigated, and the complex bimetallic structure was formed by combining the SLM technology with traditional machining technology. CuSn10 alloy was fabricated by SLM on machined 316L matrix. The interfacial microstructure and mechanical properties of steel copper heterostructure manufactured by composite forming were clarified. The microstructure and element distribution at the interface were observed and analyzed by metallographic microscope, scanning electron microscope and energy spectrum inpspection. The mechanical properties of the steel copper heterostructure were analyzed by tensile test and microhardness measurement. The results showed that: steel and copper diffused and penetrated each other, and a metallurgical bonding area surrounded by steel and copper was formed at the interface; microcracks were found in the bonding area near the 316L matrix and extending to the 316L matrix; the tensile strength of the bonding area reached 361. 65 MPa ± 5. 45 MPa and the elongation was 3. 9% ± 0. 1%; the microhardness at the interface gradually decreased from 244. 9 HV in 316L matrix area to 155. 1 HV in CuSn10 area. The experimental results revealed that the steel copper heterostructure formed by the combination of machining and SLM has good interface bonding and mechanical properties. © 2023 China Ordnance Society. All rights reserved.

引用

页码：605 / 613

页数：8

共 23 条

[1]

JIANG H Y, LIN W K, WU S B, Et al., Application status and development trend of laser selective melting technology [J], Mechanical Engineering & Automation, 5, pp. 223-226, (2019)

[2]

SEABRA M, AZEVEDO J, ARAUJO A, Et al., Selective laser melting (SLM) and topology optimization for lighter aerospace componentes[J], Procedia Structural Integrity, 1, pp. 289-296, (2016)

[3]

CARLUCCIO D, DEMIR D A, BERMINGHAM M J, Et al., Challenges and opportunities in the selective laser melting of biodegradable metals for load-bearing bone scaffold applications [J], Metallurgical and Materials Transactions A, 51, 7, pp. 3311-3334, (2020)

[4]

BRANDT M, SUN S J, LEARY M, Et al., High-value SLM aerospace components:from design to manufacture [J], Advanced Materials Research, 2196, pp. 135-147, (2013)

[5]

WANG D, DENG G W, YANG Y Q, Et al., Research progress on additive manufacturing of metallic heterogeneous materials, Journal of Mechanical Engineering, 57, 1, pp. 186-198, (2021)

[6]

GUO D G, ZHOU Q, LIU R, Et al., Ballistic resistance of Al-Mg-Al light metal layered armor plate [J], Acta Armamentarii, 42, 3, pp. 598-606, (2021)

[7]

CHEN J, YANG Y Q, SONG C H, Et al., Interfacial microstructure and mechanical properties of 316L / CuSn10 multi-material bimetallic structure fabricated by selective laser melting [J], Materials Science & Engineering A, 752, pp. 75-85, (2019)

[8]

MEI X L, WANG X Y, PENG Y B, Et al., Interfacial characterization and mechanical properties of 316L stainless steel/ inconel 718 manufactured by selective laser melting [J], Materials Science & Engineering A, 758, pp. 185-191, (2019)

[9]

SING S L, LAM L P, ZHANG D Q, Et al., Interfacial characterization of SLM parts in multi-material processing: Intermetallic phase formation between AlSi10Mg and C18400 copper alloy[J], Materials Characterization, 107, pp. 220-227, (2015)

[10]

LIU L Q, SONG C H, YANG Y Q, Et al., Study on mechanism of strengthening interface structure of dissimilar materials by selective laser melting, Journal of Mechanical Engineering, 56, 3, pp. 189-196, (2020)

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