Damage and plastic deformation accumulation in fretting fatigue occurs within a depth of a few crystallographic grains. Therefore, more accurate assumptions concerning length scale, damage volume, and the material model are needed to establish a more solid physical foundation necessary for next generation fretting fatigue damage prediction. Major thrusts include: (1) development and implementat...

Fiber reinforced metal composites were fabricated by diffusion welding. The matrices used were commercially pure titanium (CPTi) and two kinds of titanium alloys (Ti-6A1-4V and Ti-21V-4A1), and the filaments were two kinds of SiC-CVD fiber. The structure and the distribution of elements in reaction zone between matrix and filament both in as-fabricated state and in heat-treated state were inves...

To secure the total hip replacement (THR) components, introduced in 1960s, polymethyl methacrylate (PMMA) bone cement was used as a fixation. The polymerizes and becomes firm to hold implant place. However, failure of may lead fractures dislocations which is detrimental patient’s well-being whether short-term or long-term. Hence, aim this study find suitable mixtures for compromising Young Modu...

The critical current density in NbJSn conductors is described with an improved scaling formula for the temperature, magnetic field and strain dependence. In an earlier study it is concluded that the largest uncertainties in this description arise from the temperature dependence that is described with various slightly different empirical relations. For the optimization of the numerical codes, us...

A dual phase Ti-6A1-4V alloy was tested in uniaxial tension over a large quasi-static loading range (10−5–10−1 s−1) in ambient environment. As strain rate increases, strength of the alloy was found to increase at the expense of ductility. In the low strain-rate region, strain rate sensitivity of the material experienced a gradual decrease during plastic deformation. In the high strain-rate regi...

PURPOSE The purpose of this study was to assess the surface characteristics and the biocompatibility of zirconium (Zr) coating on Ti-6Al-4V alloy surface by radio frequency (RF) magnetron sputtering method. MATERIALS AND METHODS The zirconium films were developed on Ti-6Al-4V discs using RF magnetron sputtering method. Surface profile, surface composition, surface roughness and surface energy...

This work investigated the microstructure and elevated-temperature (400-475C) tensile and tensile-creep deformation behavior of a powder metallurgy (PM) rolled Ti-6Al-4V-1B(wt.%) alloy. The PM rolled Ti-6Al-4V-1B alloy exhibited a duplex microstructure, and it did not exhibit a strong α-phase texture compared with the PM extruded Ti-6Al-4V-1B alloy. The PM rolled Ti6Al-4V-1B alloy exhibited gre...

Porous Ti-6Al-4V scaffolds fabricated by means of selective laser melting (SLM), having controllable geometrical features and preferable mechanical properties, have been developed as a class of biomaterials that hold promising potential for bone repair. However, the inherent bio-inertness of the Ti-6Al-4V alloy as the matrix of the scaffolds results in a lack in the ability to stimulate bone in...

The purpose of this research is to understand how the process parameters surrounding the Direct Metal Deposition (DMD) process affect the properties of the deposition. The powder used in this research is pre-alloyed titanium powder (Ti-6Al4V), containing 6% wt. aluminum and 4% wt. vanadium. The DMD process involves injecting metallic powder into a weld pool created by a high power industrial la...