Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/104537
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Title: Deformation-induced phase changes of Zn-Al alloy during ultra-precision raster milling
Authors: Zhang, SJ 
To, S 
Issue Date: Feb-2017
Source: International journal of advanced manufacturing technology, Feb. 2017, v. 88, no. 5-8, p. 1755-1761
Abstract: Metal cutting is a complex material removal process with elastic deformation (ED) and plastic deformation (PD) together taking place in chip formation and surface generation. PD consists of shear PD (SPD) and normal PD (NPD) intrinsically relevant to cutting mechanism, such as pure cutting and ploughing. In ultra-precision machining, PD induces phase changes of Zn-Al alloy once, i.e., phase decomposition. In this study, the distinctive effects of SPD and NPD in surface generation on phase changes of Zn-Al alloy in ultra-precision raster milling (UPRM) with horizontal cutting under up-cutting mode were firstly discussed. At the machined surfaces of Zn-Al alloy, NPD and SPD both results in phase changes, but only NPD changes preferred crystal orientation; and PD under high-speed cutting induces phase changes twice, i.e., four-phase transformation occurs after phase decomposition, namely twin phase changes, which were firstly observed.
Keywords: Normal plastic deformation
Phase change
Shear plastic deformation
Ultra-precision raster milling
Zn-Al alloy
Publisher: Springer UK
Journal: International journal of advanced manufacturing technology 
ISSN: 0268-3768
EISSN: 1433-3015
DOI: 10.1007/s00170-016-8871-2
Rights: © Springer-Verlag London 2016
This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use(https://www.springernature.com/gp/open-research/policies/accepted-manuscript-terms), but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1007/s00170-016-8871-2.
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