Study on the influence of temperature on the surface asperity in micro cross wedge rolling

Lu, HN; Wei, DB; Jiang, ZY; Wu, D; Zhao, XM

Study on the influence of temperature on the surface asperity in micro cross wedge rolling

Lu, HN Wei, DB

Jiang, ZY Wu, D Zhao, XM

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Publication Type:: Conference Proceeding
Citation:: AIP Conference Proceedings, 2013, 1532 pp. 1032 - 1037
Issue Date:: 2013-06-07

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Field	Value	Language
dc.contributor.author	Lu, HN	en_US
dc.contributor.author	Wei, DB https://orcid.org/0000-0002-4247-8905	en_US
dc.contributor.author	Jiang, ZY	en_US
dc.contributor.author	Wu, D	en_US
dc.contributor.author	Zhao, XM	en_US
dc.date.issued	2013-06-07	en_US
dc.identifier.citation	AIP Conference Proceedings, 2013, 1532 pp. 1032 - 1037	en_US
dc.identifier.isbn	9780735411562	en_US
dc.identifier.issn	0094-243X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/32981
dc.description.abstract	When the common deformation processes are scaled down to micro/meso dimensions, size effect is the particular phenomena in microforming, which is related to the dominant influence of single grains inside the micropart. The conventional cross wedge rolling (CWR) is introduced into the micro scale in order to take the advantages of CWR. The micro cross wedge rolling (MCWR) has to confront with the phenomena of size effect that occurs in the common microforming processes inevitably. One of the approaches to compensate size effect is to increase the deforming temperature. An increased formability is achieved because more slip systems of polycrystal metal are activated at the elevated temperature. This reduces the anisotropic material behavior resulting in a more homogeneous forming with improved reproducibility. In this study, a YAG laser beam is applied to heat the workpiece. Finite element model (FEM) associated with a material constitutive formulation considering dislocation mechanics is set up to simulate the MCWR of pure copper utilizing the laser heating. The surface asperity as an indication of material heterogeneity in micro scale is quantitatively analysed. The simulation results show a good agreement with experimental results in terms of the surface asperity. © 2013 AIP Publishing LLC.	en_US
dc.relation.ispartof	AIP Conference Proceedings	en_US
dc.relation.isbasedon	10.1063/1.4806948	en_US
dc.title	Study on the influence of temperature on the surface asperity in micro cross wedge rolling	en_US
dc.type	Conference Proceeding
utslib.citation.volume	1532	en_US
utslib.for	0910 Manufacturing Engineering	en_US
dc.location.activity	Shenyang, PEOPLES R CHINA
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	open_access
pubs.publication-status	Published	en_US
pubs.volume	1532	en_US

Abstract:

When the common deformation processes are scaled down to micro/meso dimensions, size effect is the particular phenomena in microforming, which is related to the dominant influence of single grains inside the micropart. The conventional cross wedge rolling (CWR) is introduced into the micro scale in order to take the advantages of CWR. The micro cross wedge rolling (MCWR) has to confront with the phenomena of size effect that occurs in the common microforming processes inevitably. One of the approaches to compensate size effect is to increase the deforming temperature. An increased formability is achieved because more slip systems of polycrystal metal are activated at the elevated temperature. This reduces the anisotropic material behavior resulting in a more homogeneous forming with improved reproducibility. In this study, a YAG laser beam is applied to heat the workpiece. Finite element model (FEM) associated with a material constitutive formulation considering dislocation mechanics is set up to simulate the MCWR of pure copper utilizing the laser heating. The surface asperity as an indication of material heterogeneity in micro scale is quantitatively analysed. The simulation results show a good agreement with experimental results in terms of the surface asperity. © 2013 AIP Publishing LLC.

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