About this Abstract |
Meeting |
MS&T21: Materials Science & Technology
|
Symposium
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Additive Manufacturing of Metals: Microstructure, Properties and Alloy Development
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Presentation Title |
Mechanical Properties and Metallurgical Characteristics of H13 Tool Steel Additively Manufactured in Low Vacuum and Heated Condition |
Author(s) |
Shinji Matsushita, Hirotsugu Kawanaka, Hyakka Nakada, Steven James Osma, Yusuke Yasuda, Seung Hwan Park |
On-Site Speaker (Planned) |
Shinji Matsushita |
Abstract Scope |
Additive manufacturing of H13 tool steel is expected to be utilized for producing casting dies with cooling channels. However, as a challenge for application of H13 tool steel to AM, H13 tool steel has high hardness after solidification and cracks are likely to occur during building. Thus, we have developed the original selective laser melting machine equipped with low vacuum system and heating device, which make it possible to build products without cracks suppressing oxidation in high temperature condition. In this study, first of all, we investigated the recoating condition in which the powders were not spattered in the low vacuum environment. Secondly, we evaluated the mechanical and metallurgical characteristics of H13 tool steel additively manufactured under low vacuum and high temperature conditions, 80℃ and 300℃. Finally, we considered the optimization of material recipe by using kernel ridge regression model, one of machine learning techniques. |