نتایج جستجو برای: dilatometry
تعداد نتایج: 290 فیلتر نتایج به سال:
The mineralogical transformation of clay material is critical to the firing process for brick manufacturing. In this study, a series in-situ integrated techniques are used study properties two mixtures routinely production bricks at local factory in Queensland, Australia. In-situ XRD, thermal expansion/contraction, weight loss, and microstructural evolution bodies high temperature have been inv...
The quenching and partitioning (Q&P) process is a heat treatment process, aiming at the creation of steel microstructures composed martensite retained austenite. Herein, thermal stability microstructure investigated upon reheating microstructures, created with different Q&P settings, in routes, using dilatometry thermomagnetometry to quantitatively monitor phase fractions. Analysis derivative c...
U-7.5Nb-2.5Zr cladded in Zircaloy-4 is one of the most studied fuel prototypes. The Nb and Zr are added to U stabilize body-centered cubic (BCC) gamma phase grant mechanical swelling resistance. undergoes α′′ transformation, generating compressive stresses due volume reduction. also can transform a combination α + γ2 (equilibrium phases), which known be hard brittle. This work had objective tes...
Abstract Advanced medium-Mn sheet steels show an opportunity for the development of cost-effective and light-weight automotive parts with improved safety optimized environmental performance. These utilize strain-induced martensitic transformation metastable retained austenite to improve strength–ductility balance. The improvement mechanical performance is related tailored thermal stabilities au...
Sintering of metal powders is a well-established industrial process for specific applications, which allow a cheap series production of metal parts even with complex shape. The residual porosity, always present in sintered power compacts, limits their mechanical strength. On the other hand, for several products such porosity is needed. Products of that kind are for example: metal filters showin...
The effect of configuration of an asymmetric bulky initiator 2,2’-[1,1’-binaphtyl-2,2’-diyl10 bis-(nitrylomethilidyne)]diphenoxy aluminum isopropoxide (Ini) on structure of copolymer of 11 asymmetric monomer L,L-lactide (Lac) with symmetric comonomer trimethylene carbonate (Tmc) 12 was studied using polarimetry, dilatometry, SEC and 13C NMR. When the S-enantiomer of Ini was 13 used the distribu...
Glass-ceramic materials, obtained by sinter-crystallization of melted alkaline-olivine basaltic tuffs, were investigated. The kinetics of bulk crystallization was evaluated by differential thermal analysis (DTA) at different heating rates. The phase formation and the sintering behavior of glass powders (<75 lm) were studied in air and in nitrogen atmospheres by DTA and dilatometry, respectively...
We use calorimetry and dilatometry under hydrostatic pres7 sure, X-ray powder diffraction and available literature data in a series 8 of composition-related orientationally disordered (plastic) crystals to 9 characterize both the plastic and melting transitions and investigate 10 relationships between associated thermodynamic properties. First, gen11 eral common trends are identified: (i) The t...
Because of its relatively high solubility in aqueous media and its rapid transformation to hydroxyapatite, amorphous calcium phosphate (ACP) has been utilized as the filler phase of resin-based bioactive composites that have remineralization potential. The objectives of this study were to determine how various methacrylate resins and various types of ACP fillers affect acrylic vinyl conversion ...
The focus of this work is to analyze the sintering kinetics Ti12.5Ta12.5Nb alloy by dilatometry. mixture powders was achieved mixing individual Ti, Ta and Nb, which were then axially pressed. Sintering performed at 1260 °C using different heating rates. microstructure determined X-ray diffraction scanning electron microscopy. Results show that densification solid state diffusion relative densit...
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