Influence of oxynitriding on the wear resistance of VT14 titanium alloy

The wear resistance and wear characteristics of cluster-gradient architecture (CGA) nanostructured topocomposites are studied. The specifics of tribocontact interaction under microcutting conditions is considered. The reasons for retention of high wear resistance of this class of nanostructured topocomposites are studied. The mechanisms of energy dissipation from the tribocontact zone, due to the nanogeometry and the structural-phase structure of CGA topocomposites are analyzed. The role of triboactivated deformation and diffusion processes in providing increased wear resistance of carbide-based topocomposites is shown. They are tested under the conditions of blade processing of heat-resistant titanium alloy.

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Effect of pre-treatment with fine particle peening on surface properties and wear resistance of gas blow induction heating nitrided titanium alloy

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2018.11.088 ◽

2019 ◽

Vol 359 ◽

pp. 476-484 ◽

Cited By ~ 8

Author(s):

Shogo Takesue ◽

Shoichi Kikuchi ◽

Hiroyuki Akebono ◽

Yoshitaka Misaka ◽

Jun Komotori

Keyword(s):

Wear Resistance ◽

Titanium Alloy ◽

Surface Properties ◽

Induction Heating ◽

Fine Particle ◽

Pre Treatment ◽

Nitrided Titanium

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Effect of laser rescanning on Ti6Al4V microstructure during selective laser melting

Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture ◽

10.1177/0954405420976091 ◽

2020 ◽

pp. 095440542097609

Author(s):

Weipeng Duan ◽

Meiping Wu ◽

Jitai Han

Keyword(s):

Wear Resistance ◽

Titanium Alloy ◽

Selective Laser Melting ◽

Human Body ◽

High Impact ◽

Laser Melting ◽

Heat Treated ◽

Volume Porosity ◽

Biomedical Field

TC4, which is one of the most widely used titanium alloy, is frequently used in biomedical field due to its biocompatible. In this work, selective laser melting (SLM) was used to manufacture TC4 parts and the printed parts were heat-treated using laser rescanning technology. The experimental results showed that laser rescanning had a high impact on the quality of SLMed part, and a different performance on wear resistance can be found on the basis. It can be seen that the volume porosity of the sample was 7.6 ± 0.5% without using any further processing technology. The volume porosity of the sample processed using laser rescanning strategy was decreased and the square-framed rescanning strategy had a relative optimal volume porosity (1.5 ± 0.3%) in all these five samples. With the further decreasing of volume porosity, the wear resistance decreased at the same time. As its excellent bio-tribological properties, the square-framed rescanning may be a potential suitable strategy to forming TC4 which used in human body.

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PHYSICAL PROPERTIES AND MICROSTRUCTURE PERFORMANCE OF LASER ALLOYING Zn MODIFIED AMORPHOUS-NANOCRYSTALS REINFORCED COATING

NANO ◽

10.1142/s1793292013500380 ◽

2013 ◽

Vol 08 (04) ◽

pp. 1350038 ◽

Cited By ~ 2

Author(s):

JIANQUAN LI ◽

HUASHI LIU ◽

JIANING LI ◽

GUOZHONG LI

Keyword(s):

Wear Resistance ◽

Titanium Alloy ◽

Electron Microscope ◽

Crystallization Process ◽

Laser Alloying ◽

X Ray Diffraction ◽

X Ray ◽

Amorphous Phases ◽

Transmission Electron ◽

Improve Wear Resistance

Zn was firstly used to improve wear resistance of a TA7 (Ti–5Al–2.5Sn) titanium alloy surface by mean of a laser alloying (LA) technique. The synthesis of the hard coating on a TA7 titanium alloy by LA of Co–Ti–Cr–TiB2–Zn–CeO2 pre-placed powders was investigated by means of scanning electron microscope (SEM), X-ray diffraction (XRD) and high resolution transmission electron microscope (HRTEM). Experimental results indicated lot of the nanocrystals, such as Ti–B/CoZn13 and the amorphous phases were produced in such LA coating. The nucleation and growth of the amorphous phases were retarded by the nanocrystals in a certain extent during the crystallization process of the amorphous phases. Compared with a TA7 alloy substrate, an improvement of the wear resistance was obtained for such LA composite coating.

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