INTERFEROMETRIC SYNTHETIC APERTURE RADAR (INSAR) TECHNOLOGY AND GEOMORPHOLOGY INTERPRETATION

Geomorphology is briefly the study of landforms and their formative processes on the surface of the planet earth as human habitat. The landforms evolution and the formative processes can best be studied by technologies with main application in study of elevation. Interferometric Synthetic Aperture Radar (InSAR) is the appropriate technology for this application. With phase differences calculations in radar waves, the results of this technology can extensively be interpreted for geomorphologic researches. The purpose of the study is to review the geomorphologic studies using InSAR and also the technical studies about InSAR with geomorphologic interpretations. This study states that the InSAR technology can be recommended to be employed as a fundamental for geomorphology researches

Kinetic transitions during non-partitioned ferrite growth in Fe-C-X alloys

ISI Document Delivery No.: 447GT Times Cited: 0 Cited Reference Count: 24 Zurob, H. S. Hutchinson, C. R. Brechet, Y. Seyedrezai, H. Purdy, G. R. Natural Science and Engineering Research Council of Canada (NSERC) ; Tohoku University H.S.Z. and G.R.P. acknowledge the financial support of the Natural Science and Engineering Research Council of Canada (NSERC). The authors gratefully acknowledge Dr. T. Furuhara (Tohoku University) for provision of the Fe-2%Mn alloy. Pergamon-elsevier science ltd OxfordFerrite growth behavior in Fe-C-Mn alloys has been Studied using controlled decarburization experiments. The recently reported transition from LENP (local equilibrium-negligible partitioning) kinetics, at lower temperatures, to PE (paraequilibrium) kinetics, at higher temperatures, is shown to behave self-consistently over a range of Mn contents and temperatures and long-lived intermediate states between LENP and PE persist over a well-defined range of temperature and composition. A simple model which quantitatively describes the experimental observations over a range of composition and temperature is proposed. A key feature of this model is the introduction of an alloying element capacity of the moving alpha/gamma interfaced X-Mn*. The introduction of this quantity is purely guided by the experimental data and, at present, there is no physically based method for calculating it. Once X-Mn* is defined, multiple-jump kinetic analysis quantitatively describes the experimental observations over an impressive range of growth behaviors. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved

The influence of low temperature clustering on strengthening precipitation in ams alloy

Heat-treatable 6000 series aluminum alloys are the most commonly extruded materials in the world. The precipitation process in these alloys is both complex and well characterized. The earliest clustering stage has been shown to have a large effect on subsequent strengthening precipitation, however little is known about the influence of clustering as a function of composition and processing parameters. The current work examines this influence considering the factors of relative and absolute magnesium and silicon content, and the extent of natural aging. Billets were cast and extruded prior to heat-treatment, and the hardening response was evaluated with hardness, conductivity, and transmission electron microscopy (TEM). This work advances the current understanding of Al-Mg-Si precipitation by correlating the kinetics of age hardening to composition and processing, and may lead to further optimization of 6000 series alloy strength and toughness