Characterization of copper & stainless steel interface produced by electron beam powder bed fusion
Unalloyed copper (Cu) powder was deposited and melted onto a pre-existing stainless steel substrate using electron beam powder bed fusion (EB-PBF) additive manufacturing (AM) to form dense, bimetallic structures. The AM fabricated Cu was fully dense, and with strength properties consistent with rece...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-12-01
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| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127521008339 |
| _version_ | 1819093775612379136 |
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| author | Christopher Rock Prithwish Tarafder Lawrence Ives Timothy Horn |
| author_facet | Christopher Rock Prithwish Tarafder Lawrence Ives Timothy Horn |
| author_sort | Christopher Rock |
| collection | DOAJ |
| description | Unalloyed copper (Cu) powder was deposited and melted onto a pre-existing stainless steel substrate using electron beam powder bed fusion (EB-PBF) additive manufacturing (AM) to form dense, bimetallic structures. The AM fabricated Cu was fully dense, and with strength properties consistent with recent reports on EB-PBF of Cu. The overall bimetallic structures exhibited total elongation of 25–35%, and was dominated by plastic deformation in the Cu region. Tensile failures were typically observed in the Cu portion of the bimetallic bodies demonstrating that the interface was not the source of mechanical failure. The interface region of the bimetallics contained areas of liquid phase separated Cu and Iron (Fe) + Chromium (Cr) rich regions resulting from a metastable miscibility gap in the Cu and Fe phase diagram. Metallurgical and mechanical examinations of the bimetallic structures showed the interface region transitions from an Fe rich mixture to a Cu rich mixture within a few AM layers. |
| first_indexed | 2024-12-21T23:16:52Z |
| format | Article |
| id | doaj.art-0b875ed17dc04c8c976bbcf36250c09d |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-21T23:16:52Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-0b875ed17dc04c8c976bbcf36250c09d2022-12-21T18:46:53ZengElsevierMaterials & Design0264-12752021-12-01212110278Characterization of copper & stainless steel interface produced by electron beam powder bed fusionChristopher Rock0Prithwish Tarafder1Lawrence Ives2Timothy Horn3Center for Additive Manufacturing & Logistics, North Carolina State University, United StatesCenter for Additive Manufacturing & Logistics, North Carolina State University, United StatesCalabazas Creek Research, Inc, United StatesCenter for Additive Manufacturing & Logistics, North Carolina State University, United States; Department of Mechanical & Aerospace Engineering, North Carolina State University, United States; Corresponding author.Unalloyed copper (Cu) powder was deposited and melted onto a pre-existing stainless steel substrate using electron beam powder bed fusion (EB-PBF) additive manufacturing (AM) to form dense, bimetallic structures. The AM fabricated Cu was fully dense, and with strength properties consistent with recent reports on EB-PBF of Cu. The overall bimetallic structures exhibited total elongation of 25–35%, and was dominated by plastic deformation in the Cu region. Tensile failures were typically observed in the Cu portion of the bimetallic bodies demonstrating that the interface was not the source of mechanical failure. The interface region of the bimetallics contained areas of liquid phase separated Cu and Iron (Fe) + Chromium (Cr) rich regions resulting from a metastable miscibility gap in the Cu and Fe phase diagram. Metallurgical and mechanical examinations of the bimetallic structures showed the interface region transitions from an Fe rich mixture to a Cu rich mixture within a few AM layers.http://www.sciencedirect.com/science/article/pii/S0264127521008339Additive manufacturingCuBimetallicMiscibility gapLiquid phase separationInterface |
| spellingShingle | Christopher Rock Prithwish Tarafder Lawrence Ives Timothy Horn Characterization of copper & stainless steel interface produced by electron beam powder bed fusion Materials & Design Additive manufacturing Cu Bimetallic Miscibility gap Liquid phase separation Interface |
| title | Characterization of copper & stainless steel interface produced by electron beam powder bed fusion |
| title_full | Characterization of copper & stainless steel interface produced by electron beam powder bed fusion |
| title_fullStr | Characterization of copper & stainless steel interface produced by electron beam powder bed fusion |
| title_full_unstemmed | Characterization of copper & stainless steel interface produced by electron beam powder bed fusion |
| title_short | Characterization of copper & stainless steel interface produced by electron beam powder bed fusion |
| title_sort | characterization of copper amp stainless steel interface produced by electron beam powder bed fusion |
| topic | Additive manufacturing Cu Bimetallic Miscibility gap Liquid phase separation Interface |
| url | http://www.sciencedirect.com/science/article/pii/S0264127521008339 |
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