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Interfacial characterization and mechanical properties of 316L stainless steel/inconel 718 manufactured by selective laser melting

Interfacial characterization and mechanical properties of 316L stainless steel/inconel 718 manufactured by selective laser melting
Interfacial characterization and mechanical properties of 316L stainless steel/inconel 718 manufactured by selective laser melting

The multi-material selective laser melting (SLM) technology has been widely studied in recent years. In this paper, 316L stainless steel (316SS) and Inconel 718 (IN718) multi-material parts were manufactured by SLM and their interfacial characteristics and mechanical properties were investigated by optical microscopy, scanning electron microscopy, energy dispersive spectroscopy, electronic universal testing machine and microhardness tester. The interface metallograph and higher comprehensive mechanical performance with elasticity modulus (103 ± 3 MPa), elongation (28.1 ± 2%) and ultimate tensile strength (596 ± 10 MPa) proved good metallurgical bonding at the interfaces (∼100 μm) between 316SS and IN718. Nevertheless, some cracks and holes, which were found at or near the interfaces, suggested special SLM processing parameters (such as laser power, laser scanning speed, layer thickness, hatch spacing, remelting, fabrication sequence and layers of interface) should be applied at the interfaces.

316L stainless steel, Inconel 718, Multi-material, Selective laser melting
0921-5093
185-191
Mei, Xinliang
c722b96e-beab-484f-a41b-a08443b32a6d
Wang, Xiangyu
b1f3003e-85fb-4f31-b565-4fcd543fa7ab
Peng, Yinbo
89f79f1c-df3b-4789-a9de-a8b127ca9b4f
Gu, Hongyan
35026932-d984-48e6-939d-91d1b0b34556
Zhong, Gaoyan
4122f394-9978-4435-874b-5e8356d19a31
Yang, Shoufeng
e0018adf-8123-4a54-b8dd-306c10ca48f1
Mei, Xinliang
c722b96e-beab-484f-a41b-a08443b32a6d
Wang, Xiangyu
b1f3003e-85fb-4f31-b565-4fcd543fa7ab
Peng, Yinbo
89f79f1c-df3b-4789-a9de-a8b127ca9b4f
Gu, Hongyan
35026932-d984-48e6-939d-91d1b0b34556
Zhong, Gaoyan
4122f394-9978-4435-874b-5e8356d19a31
Yang, Shoufeng
e0018adf-8123-4a54-b8dd-306c10ca48f1

Mei, Xinliang, Wang, Xiangyu, Peng, Yinbo, Gu, Hongyan, Zhong, Gaoyan and Yang, Shoufeng (2019) Interfacial characterization and mechanical properties of 316L stainless steel/inconel 718 manufactured by selective laser melting. Materials Science And Engineering A, 758, 185-191. (doi:10.1016/j.msea.2019.05.011).

Record type: Article

Abstract

The multi-material selective laser melting (SLM) technology has been widely studied in recent years. In this paper, 316L stainless steel (316SS) and Inconel 718 (IN718) multi-material parts were manufactured by SLM and their interfacial characteristics and mechanical properties were investigated by optical microscopy, scanning electron microscopy, energy dispersive spectroscopy, electronic universal testing machine and microhardness tester. The interface metallograph and higher comprehensive mechanical performance with elasticity modulus (103 ± 3 MPa), elongation (28.1 ± 2%) and ultimate tensile strength (596 ± 10 MPa) proved good metallurgical bonding at the interfaces (∼100 μm) between 316SS and IN718. Nevertheless, some cracks and holes, which were found at or near the interfaces, suggested special SLM processing parameters (such as laser power, laser scanning speed, layer thickness, hatch spacing, remelting, fabrication sequence and layers of interface) should be applied at the interfaces.

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More information

Accepted/In Press date: 5 May 2019
e-pub ahead of print date: 7 May 2019
Keywords: 316L stainless steel, Inconel 718, Multi-material, Selective laser melting

Identifiers

Local EPrints ID: 431271
URI: http://eprints.soton.ac.uk/id/eprint/431271
ISSN: 0921-5093
PURE UUID: 7513a6a2-2394-44c2-bff5-9ddd765ea0ed
ORCID for Shoufeng Yang: ORCID iD orcid.org/0000-0002-3888-3211

Catalogue record

Date deposited: 29 May 2019 16:30
Last modified: 25 Nov 2021 16:59

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Contributors

Author: Xinliang Mei
Author: Xiangyu Wang
Author: Yinbo Peng
Author: Hongyan Gu
Author: Gaoyan Zhong
Author: Shoufeng Yang ORCID iD

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