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Properties of the interface between the as-built Ti–6Al–4V sample and the Ti substrate in selective laser sintering

School of Materials Science and Engineering, Hanoi University of Science and Technology, No. 1, Dai Co Viet Street, Hai Ba Trung District, Hanoi 100000, Vietnam

E-mail Address: thuyet.nguyenminh@hust.edu.vn

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Hoang-Viet Nguyen

School of Materials Science and Engineering, Hanoi University of Science and Technology, No. 1, Dai Co Viet Street, Hai Ba Trung District, Hanoi 100000, Vietnam

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Thai-Hung Le

School of Materials Science and Engineering, Hanoi University of Science and Technology, No. 1, Dai Co Viet Street, Hai Ba Trung District, Hanoi 100000, Vietnam

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Quoc-Khanh Dang

School of Materials Science and Engineering, Hanoi University of Science and Technology, No. 1, Dai Co Viet Street, Hai Ba Trung District, Hanoi 100000, Vietnam

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, and

Jin-Chun Kim

School of Materials Science and Engineering, University of Ulsan, Ulsan 44610, Korea

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https://doi.org/10.1142/S0217979220401372Cited by:0 (Source: Crossref)

This article is part of the issue:

Special Issue on the Physics and Mechanics of New Materials and Their Application
Guest Editors: Yun Hae Kim, Banh Tien Long, I. A. Parinov and S.-H. Chang

Abstract

In this paper, selective laser sintering (SLS) was applied to join two materials by printing Ti–6Al–4V powder on a Ti substrate without any support parts. The characteristics of the interface between the as-built Ti–6Al–4V sample and the substrate were investigated. The analysis indicates that a heat-affected zone (HAZ) and the fish-scale type were formed at the joining area. The combination of smaller grains, acicular $α^{'}$ martensite, and lamellar $(α + β)$ structures was observed inside the interface zone. The hardness value at the interface area was measured by about 320 HV which is higher than 280 HV of the substrate and smaller than 369 HV of the as-built sample. The results predict that the SLS process is a promising method for manufacturing of hybrid materials.

Keywords:

PACS: 61.82.Bg, 68.35.-p, 68.35.Gy, 68.37.-d, 81.20.-n

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