The effect of Ni-based fillers on corrosion resistance welded super austenitic stainless steel (SASS) was examined. use for gas tungsten arc SASS leads to the formation fine Cr-Mo enriched phase in its weld unmixed zone, which makes it more susceptible localized corrosion. metallographic observations showed that pits were initiated around precipitated and they propagated along base metal. degre...

McLean R, Williams S, Mann J. (Department of Human Nutrition; Department of Preventive and Social Medicine, Dunedin School of Medicine, University of Otago; Department of Preventive and Social Medicine; Department of Medicine, Dunedin School of Medicine, University of Otago, Dunedin, New Zealand.) Monitoring population sodium intake using spot urine samples: Validation in a New Zealand populati...

METEORITES. A. Morlok, M. Anand and M. M. Grady Department of Earth and Planetary Sciences, Faculty of Science, Kobe University, Nada, Kobe 657-8501, Japan Department of Earth Sciences, The Open University, Walton Hall, Milton Keynes MK7 6AA, UK Planetary and Space Sciences Research Institute, The Open University, Walton Hall, Milton Keynes, MK7 6AA...

2014 We discuss the rôle of disorder and of the lower critical dimension in producing a 1/f spectrum. We present a numerical simulation for a bidimensional Ising spin glass, showing a 1/f spectrum in a remarkable range of temperatures and frequencies. J. Physique 45 (1984) 657-663 AVRIL 1984, Classification Physics Abstracts 11. ION 05.50

A conceptual design is presented for a high power pion production target for neutrino factories and muon colliders that is based on a rotating metal band of either inconel alloy 718, titanium alloy 6Al-4V grade 5 or nickel. The band is 5 meters in diameter and is tangentially intercepted by a pulsed proton beam inside a 20 Tesla tapered solenoidal magnetic pion capture channel. The mechanical l...

We describe a closed-loop control system ensuring full penetration in welding by controlling the focus position and power of a 4-kW Nd:YAG laser. A focus position monitoring system was developed based on the chromatic aberration of the focusing optics. With the laser power control system we can determine the degree of penetration by analyzing the keyhole image intensity profile. We demonstrate ...

The demand for components made from high performance materials like titanium or nickel-based alloys as well as strain-hardening stainless steel is steadily increasing. However, conventional forming operations conducted on these materials are generally very laborious and time-consuming. This is where the limitations of metal spinning also become apparent. Using a laser to apply heat localized to...

Notches were machined in specimens of Inconel 718 by a broaching process, where differing broaching runs led to differing extents of sub-surface deformation and surface roughness. Fatigue tests were carried out at 600 ̊C with a trapezoidal loading waveform at 0.25Hz. The broaching process that led to the more severe sub-surface deformation (but lower surface roughness) showed the worst fatigue p...

This paper demonstrates the effectiveness of optimizing multiple characteristics of electrical discharge machining (EDM) of Inconel 718 using copper electrodes having different shapes via Taguchi method-based Grey analysis. The modified algorithm adopted here is used successfully for both detraining the optimum settings of machining parameters and for combining multiple quality characteristic i...

1 his paper provides a U-J;P,G work for selecting heat exchangers materials especially those used in nuclear power plants. Typical examples of materials selection for heat exchanger tubing of nuclear power plants and condensers are presented. The paper brings out also, the importance of continued intensive R & D in materials in order to enhance the reliability and reduce cost by improving upon ...