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Microstructure evol...
Microstructure evolution-based design of thermal post-treatments for EBM-built Alloy 718
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- Goel, Sneha, 1993- (author)
- Högskolan Väst,Avdelningen för avverkande och additativa tillverkningsprocesser (AAT),PTW,University West
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- Zaninelli, Enrico (author)
- Department of Engineering Enzo Ferrari, University of Modena and Reggio Emilia, 41100, Modena, Italy (ITA),Universita Degli Studi Di Modena E Reggio Emilia,University of Modena and Reggio Emilia
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- Gårdstam, Johannes (author)
- Quintus Technologies AB, 72166, Västerås, Sweden
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- Klement, Uta, 1962 (author)
- Chalmers University of Technology, Gothenburg, Sweden,Chalmers tekniska högskola
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- Joshi, Shrikant V., 1960- (author)
- Högskolan Väst,Avdelningen för avverkande och additativa tillverkningsprocesser (AAT),PTW,University West
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(creator_code:org_t)
- 2020-12-10
- 2020
- English.
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In: Journal of Materials Science. - : Springer Science and Business Media LLC. - 0022-2461 .- 1573-4803. ; 56:2, s. 5250-5268
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Abstract
Subject headings
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- Alloy 718 samples were fabricated by electron beam melting (EBM) additive manufacturing process. The work focused on systematic investigation of response of the material to various thermal post-treatments, involving hot isostatic pressing (HIPing), solution treatment (ST) and two-step aging, to tailor post-treatment procedure for EBM-built Alloy 718. Results showed that HIPing at lowered temperature can be used for attaining desired defect closure while preserving grain size. Subjecting the material to ST, with or without prior HIPing, mainly caused precipitation of δ phase at the grain boundaries with prior HIPing decreasing the extent of δ phase precipitation. Moreover, results suggest that the utility of ST, with prior HIPing, could be dictated by the need to achieve a certain δ phase content, as the typically targeted homogenization after ST had already been achieved through HIPing. Detailed investigation of microstructural evolution during subsequent aging with and without prior HIPing showed that a significantly shortened aging treatment (‘4 + 1’ h), compared to the ‘standard’ long treatment (‘8 + 8’ h) traditionally developed for conventionally produced Alloy 718, might be realizable. These results can have significant techno-economic implications in designing tailored post-treatments for EBM-built Alloy 718.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Keyword
- Alloy 718
- Electronic Beam Mealting
- Production Technology
- Produktionsteknik
Publication and Content Type
- ref (subject category)
- art (subject category)
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