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Transient nucleatio...
Transient nucleation in selective laser melting of Zr-based bulk metallic glass
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- Ericsson, A. (author)
- Lund University,Lunds universitet,Hållfasthetslära,Institutionen för byggvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Solid Mechanics,Department of Construction Sciences,Departments at LTH,Faculty of Engineering, LTH
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- Pacheco, Victor (author)
- Uppsala University,Uppsala universitet,Oorganisk kemi
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- Sahlberg, Martin, 1981- (author)
- Uppsala University,Uppsala universitet,Oorganisk kemi
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- Lindwall, Johan (author)
- Luleå University of Technology,Luleå tekniska universitet,Material- och solidmekanik,Luleå Tech Univ, Mech Solid Mat, SE-97187 Luleå, Sweden.
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- Hallberg, H. (author)
- Lund University,Lunds universitet,Hållfasthetslära,Institutionen för byggvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Solid Mechanics,Department of Construction Sciences,Departments at LTH,Faculty of Engineering, LTH
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- Fisk, Martin, 1981- (author)
- Malmö University,Lund University,Lunds universitet,Malmö universitet,Institutionen för materialvetenskap och tillämpad matematik (MTM),Division of Solid Mechanics, Lund University, Lund, Sweden. Materials Science and Applied Mathematics, Malmö University, Malmö, Sweden,Lund Univ, Div Solid Mech, POB 118, SE-75120 Lund, Sweden.;Malmö Univ, Mat Sci & Appl Math, SE-20506 Malmö, Sweden.,Hållfasthetslära,Institutionen för byggvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Solid Mechanics,Department of Construction Sciences,Departments at LTH,Faculty of Engineering, LTH
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(creator_code:org_t)
- Elsevier, 2020
- 2020
- English.
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In: Materials & design. - : Elsevier. - 0264-1275 .- 1873-4197. ; 195
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Abstract
Subject headings
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- The crystallization rate during selective laser melting (SLM) of bulk metallic glasses (BMG) is a critical factor in maintaining the material's amorphous structure. To increase the understanding of the interplay between the SLM process and the crystallization behavior of BMGs, a numerical model based on the classical nucleation theory has been developed that accounts for the rapid temperature changes associated with SLM. The model is applied to SLM of a Zr-based BMG and it is shown that the transient effects, accounted for by the model, reduce the nucleation rate by up to 15 orders of magnitude below the steady-state nucleation rate on cooling, resulting in less nuclei during the build process. The capability of the proposed modelling approach is demonstrated by comparing the resulting crystalline volume fraction to experimental findings. The agreement between model predictions and the experimental results clearly suggests that transient nucleation effects must be accounted for when considering the crystallization rate during SLM processing of BMGs.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Keyword
- Additive manufacturing
- Selective laser melting
- Metallic glass
- Crystallization
- Classical nucleation theory
- Transient nucleation
- Solid Mechanics
- Hållfasthetslära
- Additive manufacturing
- Classical nucleation theory
- Crystallization
- Metallic glass
- Selective laser melting
- Transient nucleation
Publication and Content Type
- ref (subject category)
- art (subject category)
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