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Microstructure evol...
Microstructure evolution and mechanical response-based shortening of thermal post-treatment for electron beam melting (EBM) produced Alloy 718
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- Goel, Sneha, 1993- (author)
- Högskolan Väst,Avdelningen för avverkande och additativa tillverkningsprocesser (AAT),PTW
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- Zaninelli, Enrico (author)
- Universita Degli Studi Di Modena E Reggio Emilia,University of Modena and Reggio Emilia,Department of Engineering Enzo Ferrari, University of Modena and Reggio Emilia, Modena (ITA)
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- Gundgire, Tejas (author)
- Högskolan Väst,Avdelningen för avverkande och additativa tillverkningsprocesser (AAT),PTW
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- Ahlfors, Magnus (author)
- Quintus Technologies AB,Quintus Technologies AB, Västerås (SWE)
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- Ojo, Olanrewaju (author)
- University of Manitoba,Department of Mechanical Engineering, University of Manitoba, Winnipeg (CAN)
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- Klement, Uta, 1962 (author)
- Chalmers tekniska högskola,Chalmers University of Technology,Chalmers University of Technology, Gothenburg, (SWE)
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- Joshi, Shrikant V., 1960- (author)
- Högskolan Väst,Avdelningen för avverkande och additativa tillverkningsprocesser (AAT),PTW
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(creator_code:org_t)
- Elsevier BV, 2021
- 2021
- English.
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In: Materials Science and Engineering. - : Elsevier BV. - 0921-5093 .- 1873-4936. ; 820
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Abstract
Subject headings
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- Electron beam melting (EBM) produced Alloy 718 was subjected to thermal post-treatment involving hot isostatic pressing (HIPing) and heat treatment (HT). Subjecting the material to HIPing at 1120 °C led to significant densification. Study of microstructure evolution during HT (comprising of solution treatment and aging) showed possibility of significantly shortening the HT duration, particularly the time for two-step aging from the standard (8 h + 8 h) long cycle to possibly a shortened (4 h + 1 h) cycle. Another approach for shortening the post-treatment cycle by integrating the HIPing with HT inside the HIP vessel was also successfully implemented. The above observations were further substantiated by tensile response of the material subjected to the varied post-treatment cycles; out of all the post-treatments steps, tensile behaviour was observed to be mainly affected by the aging treatment. Further prospects for shortening the post-treatment protocol are also described, such as shortening of HIPing duration for the typical 4 h to 1 h cycle as well as possible elimination of solution treatment step from the entire post-treatment protocol specifically when prior HIPing is performed. Heat treatment with prior HIPing was found to be crucial for improving fatigue life, because subjecting EBM Alloy 718 to only HT, irrespective of the short or standard long protocol, rendered inferior fatigue response.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
Keyword
- Additive manufacturing
- Mechanical properties
- Alloy 718
- Post-treatment
- Microstructure evolution
- Electron beam melting
- Production Technology
Publication and Content Type
- art (subject category)
- ref (subject category)
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