Dry Cold Forging of Pure Titanium Wire to Thin Plate with Use of β-SiC Coating Dies

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ID: 117860
2020
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Abstract
Dense β-SiC coating with 3C-structure was utilized as a dry cold forging punch and core-die. Pure titanium T328H wires of industrial grade II were employed as a work material. No adhesion or galling of metallic titanium was detected on the contact interface between this β-SiC die and titanium work, even after this continuous forging process, up to a reduction in thickness by 70%. SEM (Scanning Electron Microscopy) and EDX (Electron Dispersive X-ray spectroscopy) were utilized to analyze this contact interface. A very thin titanium oxide layer was in situ formed in the radial direction from the center of the contact interface. Isolated carbon from β-SiC agglomerated and distributed in dots at the center of the initial contact interface. Raman spectroscopy was utilized, yielding the discovery that this carbon is unbound as a free carbon or not bound in SiC or TiC and that intermediate titanium oxides are formed with TiO2 as a tribofilm.
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aizawa2020materialsdry Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Tatsuhiko Aizawa;Tomoaki Yoshino;Tatsuya Fukuda;Tomomi Shiratori;Aizawa, Tatsuhiko;Yoshino, Tomoaki;Fukuda, Tatsuya;Shiratori, Tomomi;
Journal Materials (Basel, Switzerland)
Year 2020
DOI
10.3390/ma13173780
URL
https://www.mdpi.com/1996-1944/13/17/3780/htm
Keywords
titanium sic-coated sic die dry cold forging high reduction rate surface area extension rate contact interface titanium oxide debris film carbon isolation

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