Microstructure evolution and constitutive modelling of microsize structures

Given the small dimensions to be replicated for micro components, knowledge into their microstructure evolution is crucial for dimensional and property control. Constitutive model is useful to predict the final shape of the sintered micro components. In this paper, the microstructure evolution of 31...

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Main Authors: Liu, Lin., Loh, Ngiap Hiang., Tay, Bee Yen.
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2013
Subjects:
Online Access:https://hdl.handle.net/10356/101643
http://hdl.handle.net/10220/16810
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1016432020-03-07T13:22:20Z Microstructure evolution and constitutive modelling of microsize structures Liu, Lin. Loh, Ngiap Hiang. Tay, Bee Yen. School of Mechanical and Aerospace Engineering A*STAR SIMTech DRNTU::Engineering::Mechanical engineering Given the small dimensions to be replicated for micro components, knowledge into their microstructure evolution is crucial for dimensional and property control. Constitutive model is useful to predict the final shape of the sintered micro components. In this paper, the microstructure evolution of 316L stainless steel microsize structures of Φ60 µm that was fabricated by micro metal injection moulding was examined via SEM and XRD. A constitutive model is established to simulate densification of the microsize structures and the contribution of lattice diffusion (Nabarro-Herring creep) is considered. The predictive capability of the model is verified by comparing the theoretical calculations with the experimental results. The influences of boundary energy on modelling results are discussed. It is found that the modelling results agree reasonably well with the experimental results. 2013-10-24T07:54:07Z 2019-12-06T20:42:04Z 2013-10-24T07:54:07Z 2019-12-06T20:42:04Z 2012 2012 Journal Article Liu, L., Loh, N. H., & Tay, B. Y. (2012). Microstructure evolution and constitutive modelling of microsize structures. International journal of materials and product technology, 45(1-4), 64-73. https://hdl.handle.net/10356/101643 http://hdl.handle.net/10220/16810 10.1504/IJMPT.2012.051321 en International journal of materials and product technology
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Mechanical engineering
spellingShingle DRNTU::Engineering::Mechanical engineering
Liu, Lin.
Loh, Ngiap Hiang.
Tay, Bee Yen.
Microstructure evolution and constitutive modelling of microsize structures
description Given the small dimensions to be replicated for micro components, knowledge into their microstructure evolution is crucial for dimensional and property control. Constitutive model is useful to predict the final shape of the sintered micro components. In this paper, the microstructure evolution of 316L stainless steel microsize structures of Φ60 µm that was fabricated by micro metal injection moulding was examined via SEM and XRD. A constitutive model is established to simulate densification of the microsize structures and the contribution of lattice diffusion (Nabarro-Herring creep) is considered. The predictive capability of the model is verified by comparing the theoretical calculations with the experimental results. The influences of boundary energy on modelling results are discussed. It is found that the modelling results agree reasonably well with the experimental results.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Liu, Lin.
Loh, Ngiap Hiang.
Tay, Bee Yen.
format Article
author Liu, Lin.
Loh, Ngiap Hiang.
Tay, Bee Yen.
author_sort Liu, Lin.
title Microstructure evolution and constitutive modelling of microsize structures
title_short Microstructure evolution and constitutive modelling of microsize structures
title_full Microstructure evolution and constitutive modelling of microsize structures
title_fullStr Microstructure evolution and constitutive modelling of microsize structures
title_full_unstemmed Microstructure evolution and constitutive modelling of microsize structures
title_sort microstructure evolution and constitutive modelling of microsize structures
publishDate 2013
url https://hdl.handle.net/10356/101643
http://hdl.handle.net/10220/16810
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