Understanding the Effects of CoAl2O4 Inoculant Additions on Microstructure in Additively Manufactured Inconel 718 Processed Via Selective Laser Melting
| العنوان: | Understanding the Effects of CoAl2O4 Inoculant Additions on Microstructure in Additively Manufactured Inconel 718 Processed Via Selective Laser Melting |
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| المؤلفون: | Sammy Tin, I-Ting Ho, Kai-Chun Chang, Tzu-Hou Hsu, An-Chou Yeh, Dhruv Tiparti |
| المصدر: | Metallurgical and Materials Transactions A. 52:2630-2641 |
| بيانات النشر: | Springer Science and Business Media LLC, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | 010302 applied physics, Recrystallization (geology), Materials science, Zener pinning, Economies of agglomeration, Metallurgy, 0211 other engineering and technologies, Metals and Alloys, 02 engineering and technology, Condensed Matter Physics, Microstructure, 01 natural sciences, Mechanics of Materials, Agglomerate, 0103 physical sciences, Slag (welding), Selective laser melting, Inconel, 021102 mining & metallurgy |
| الوصف: | The effect of varying amounts of CoAl2O4 inoculant ranging from 0 to 2 wt pct on the microstructure evolution of Inconel 718(IN718) fabricated by selective laser melting (SLM) was evaluated. Characterization of the as-built microstructure revealed that addition of CoAl2O4 resulted in a modest degree of grain refinement with a slight increase in microstructural anisotropy. Increasing the total CoAl2O4 content beyond 0.2 wt pct resulted in severe agglomeration of the non-metallic particles and the formation of slag inclusions measuring up to 100 μm in size present in the as-built microstructure. In addition to large agglomerates, the inoculant was chemically reduced to form a fine dispersion of submicron-sized Al2O3 particles throughout the IN718 matrix. The fine dispersion of oxides significantly hindered grain recrystallization during the post-fabrication heat treatment due to a Zener pinning effect. The findings from this study indicate in order to effectively utilize CoAl2O4 as a grain refining inoculant for additive manufacturing, the process parameters need to be optimized to avoid agglomeration of the non-metallic particles and other process-related defects. |
| تدمد: | 1543-1940 1073-5623 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::06f2a35c6145ed2390600b8909e6a098 https://doi.org/10.1007/s11661-021-06255-z |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........06f2a35c6145ed2390600b8909e6a098 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 15431940 10735623 |
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