Investigation of quench hardening behavior of directed energy deposited 22MnB5 steel for local reinforcement of hot stamping parts
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Date
2022-11
Publication Type
Journal Article
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yes
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Abstract
In this study, 22MnB5 sheet metals are reinforced using Directed Energy Deposition (DED) in order to investigate the quench-hardening behavior of additively manufactured 22MnB5. Therefore, the hardness and element loss of the DED-material are examined. When compared to conventional materials, the DED-material requires faster cooling rates to achieve full martensite transformation. Titanium inhibits the formation of boron nitrides in conventional 22MnB5 sheet material (Ti). However, the Ti/N-ratio in DED-material is very low, owing to a high mill scale of Ti during the DED-process. Possible solutions and optimizations are discussed for this purpose.
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published
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Journal / series
Volume
39
Pages / Article No.
223 - 231
Publisher
Elsevier
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Edition / version
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Date collected
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Subject
22MnB5; Directed Energy Deposition; Hardenability; Critical cooling rate; Dilatometry; Boron nitride; Mill scale
Organisational unit
09706 - Bambach, Markus / Bambach, Markus