Investigation into High-Temperature Interfacial Strength of Heat-Resisting Alloy Deposited by Laser Melting Process

This paper presents an investigation of the interfacial strength between a material deposited on a substrate via direct energy deposition (DED) process. Using the DED process, a powder of the hot work tool steel H13 was deposited onto a substrate of SKD61 steel, and shear tests were performed at var...

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Published inMetals and materials international Vol. 26; no. 3; pp. 384 - 394
Main Authors Son, Jong Youn, Yoon, Hi Seak, Lee, Ki Yong, Park, Sang Hu, Shim, Do Sik
Format Journal Article
LanguageEnglish
Published Seoul The Korean Institute of Metals and Materials 01.03.2020
Springer Nature B.V
대한금속·재료학회
Subjects
Bonding strength
Characterization and Evaluation of Materials
Chemistry and Materials Science
Cracking (fracturing)
Engineering Thermodynamics
Fracture mechanics
Heat and Mass Transfer
Heat resistant alloys
High temperature
Hot work tool steels
Interfacial strength
Laser beam melting
Machines
Magnetic Materials
Magnetism
Manufacturing
Materials Science
Metallic Materials
Processes
Room temperature
Shear tests
Solid Mechanics
Substrates
Temperature
재료공학
Shear test
AISI H13
Interfacial strength
Direct energy deposition
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ISSN1598-9623
2005-4149
DOI10.1007/s12540-019-00335-x

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Summary:This paper presents an investigation of the interfacial strength between a material deposited on a substrate via direct energy deposition (DED) process. Using the DED process, a powder of the hot work tool steel H13 was deposited onto a substrate of SKD61 steel, and shear tests were performed at various temperatures (25 °C, 200 °C, 400 °C, 600 °C, and 800 °C) to investigate the strength of the interface between the deposited material and the substrate. After the shear test, the fractured specimens were also analyzed. As a tested result at room temperature (25 °C), the cracks in the specimen were initiated in the deposited region; however, at high temperatures, the specimens were fractured only in the substrate regions. However, despite the difference in the location of the fracture-containing region, at no test temperature did interfacial cracking or delamination occur between the deposited material and the substrate. Thus, the interface demonstrated high bonding strength. Graphic Abstract
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ISSN:1598-9623
2005-4149
DOI:10.1007/s12540-019-00335-x