نتایج جستجو برای: triple phase microstructure
تعداد نتایج: 678431 فیلتر نتایج به سال:
This work aims to clarify the influence of aging temperature and time on the microstructure and mechanical properties of the TiNb alloy for biomedical applications. The ingot of Ti27Nb2Ta3Zr alloy was subjected to the arc melting, hot-forging and heat treatment respectively. Microstructure characterization was investigated by optical microscope (OM), X-ray diffraction (XRD), scanning electr...
Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine Department of Radiology, Kangwon National University College of Medicine Department of Radiology, Korea University Guro Hospital Received October 12, 2007 ; Accepted November 2, 2007 Address reprint requests to : Seung Hoon Kim, M.D., Department of Radiolgy, Samsung Medical...
In this study, the effect of mechanical alloying on the microstructure and phase constituents of Mg-6Al-1Zn-1Si system was investigated. To understand the thermal behavior, isothermal annealing was performed at three different temperatures of 350, 400 and 450 °C for 1h. The results showed the grain size initially decreases with increasing the milling time up to 35h and then slightly increases. ...
superparamagnetic single phase zinc ferrite nanoparticles have been prepared by coprecipitation method at 20 °c without any subsequent calcination. the composition, crystallite size, microstructure and magnetic properties of the prepared nanoparticles were investigated using x-ray diffraction (xrd), field emission scanning electron microscope (fesem), transmission electron microscope (tem), fou...
Three-dimensional near-field high-energy X-ray diffraction microscopy has been used to observe the formation of new twinned grains in high purity Ni during annealing at 800 !C. In the fully recrystallized microstructure annealed at 800 !C, twinned grains form along triple lines. Both the grain boundary character and the grain boundary dihedral angles were measured before and after the twin form...
Background: Positioning the legs in performing spike technique significantly contributes to the development and prevention of lower limb injuries. The present study aimed to evaluate and compare the feedback and feedforward activaties of selected lower limb muscles during triple jump spike with and without toe-in landing in female volleyball players. Methods: In this controlled-laboratory stud...
Background: Reflex Sympathetic Dystrophy Syndrome (RSDS) is a rarely described complication which characterized by pain, edema, movement and vasomotor disorders, trophic changes in the skin and patchy demineralization of bone in extremities. There are numerous risk factors such as trauma, surgery, myocardial infraction and drugs. Cyclosporine (CsA) is one of the drugs which can induce RSDS. Ca...
In the present research, the effect of the homogenization process and annealing temperature were investigated for the 1.4470 ferritic-austenitic stainless steel in the as-cast condition. In this regard, microstructural evolutions, hardness, and impact energy of the steel was evaluated with different heat treatment conditions. The results show that the minimum volume fraction of austenite phase ...
We investigated the utility of triple-phase helical computed tomography (CT) in differentiating between benign and malignant splenic masses in dogs. Forty-two dogs with primary splenic masses underwent triple-phase helical CT scanning (before administration of contrast, and in the arterial phase, portal venous phase, and delayed phase) prior to splenectomy. Tissue specimens were sent for pathol...
Phase transformations and the resulting microstructural evolution of near-Ti2AlNb and Ti-12Al38Nb O 1 bcc orthorhombic alloys were investigated. For the near-Ti2AlNb alloys, the processing temperatures were below the bcc transus, while, for Ti-12Al-38Nb, the processing temperature was supertransus. Phase evolution studies showed that these alloys contain several constituent phases, namely, bcc,...
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