Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Christopher N Machio"'
Publikováno v:
Materials Today: Proceedings. 38:503-507
The initially spherical titanium (Ti) powder particles were flattened to ‘pan-cake” shape during Ball milling (BM) of the Ti-Ni powder mixture. Ultrafine Ni particles coated the pancakes of Ti particles after the final milling process of 8 h (h).
Publikováno v:
The International Journal of Advanced Manufacturing Technology. 106:1723-1735
The poor machinability of titanium-based alloys has until now been addressed by either choosing a suitable tool material, management of the heat generated during machining or by thermally assisted machining. This article reports on a new technique, c
Modelling and optimization of surface roughness during AISI P20 milling process using Taguchi method
Autor:
Ilesanmi Daniyan, Leonard Masu, L.R. VanStaden, Ronald Machaka, Christopher N Machio, Isaac Tlhabadira
Publikováno v:
The International Journal of Advanced Manufacturing Technology. 102:3707-3718
Surface roughness Ra is a parameter normally used to indicate the level of surface irregularities during machining operations. This work aims to model the cutting process, correlate and optimise the critical process parameters using the Taguchi metho
Publikováno v:
Materials & Design, Vol 90, Iss, Pp 757-766 (2016)
The effects of die wall lubricants on the cold compaction of titanium hydride powder are studied. Three commonly-used die wall powder metallurgy lubricants – zinc stearate, Acrawax® C dispersion and Mirror Glaze® – are compared. The influence o
Publikováno v:
Journal of Alloys and Compounds. 848:156494
The effect of Ni and Cu on the α→β phase transformation temperature, possible retention of the β-phase, and mechanical properties of Ti, Ti–13Cu, Ti–4.5Ni and Ti–13Cu–4.5Ni (compositions in wt. %) alloys were investigated. The alloys wer
Publikováno v:
Materials Science Forum. :121-128
The paper captures the effect of structure and the applicability of compaction models using the cold compaction of a TiH2-SS316L composite powder prepared by high energy mechanical milling. The composite blend was cold pressed uniaxially to pressures
Publikováno v:
IOP Conference Series: Materials Science and Engineering. 655:012020
In this study, the conventional powder metallurgy route of pressing and sintering was employed to study the effects of the particle size of blended elemental Ti-6Al-4V powders on the properties of powder mixtures, green and sintered densities. The -4
Autor:
D. S. Konadu, Christopher N Machio, Sanja Potgieter-Vermaak, J.H. Potgieter, J.W. van der Merwe
Publikováno v:
ISRN Corrosion. 2013:1-10
The effect of varying VC content on the corrosion behavior of WC-10 wt% Co hardmetals in sodium chloride (NaCl) and synthetic mine water (SMW) solutions has been investigated using anodic polarization scans and surface analytical methods. It is shown
Publikováno v:
Powder Technology. 207:387-395
Copyright: 2010 Elsevier. This is the post print version of the work. The definitive version is published in Power Technology, Vol. 207(1-3)
Publikováno v:
IOP Conference Series: Materials Science and Engineering. 430:012014
Machining is an integral shaping process for most titanium alloys based components. However, the ease of machining (machinability) of Titanium and its alloys is generally poor because the alloys have low thermal conductivity, high strength at high te