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Showing 1 to 20 of 48 for “"metallography"”.
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Crystallography and Electron Metallography of the Martensite Transformation in Iron - Aluminum - Carbon Alloys
Made available in DSpace on 2015-05-12T22:36:06Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7121259.PDF: 8667123 bytes, checksum: 9462159e0c7f97d526096a07899e4548 (MD5) Previous issue date: 1971
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The Crystallography and Electron Metallography of The (252)(F) Martensitetransformation in a Iron - Manganese - Chromium - Carbon Alloy
Made available in DSpace on 2014-12-10T17:57:53Z (GMT). No. of bitstreams: 1 7020984.pdf: 6790702 bytes, checksum: dba5ce6f6a251cfafe3aaade55db0bd5 (MD5) Previous issue date: 1970
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The Technology of Ancient and Medieval Directly Reduced Phosphoric Iron.
… (gromps), and iron artefacts were analysed by metallography, SEM-EDS, EPMA, and XRD. The effects of forging and carburising on phosphoric iron were studied by experiment and artefact analysis. The ore to slag %P ratio for solid-state reduction was determined to range from 1:1.2 to 1: 1.8. The …
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A study of alloys based on the magnesium-lithium system
… This has involved the application of optical metallography, x-ray diffraction and differential scanning calorimetry. As a result, the ternary phase diagram for these Mg-rich alloys has been drawn semi-quantitatively. This diagram has been used together with optical and electron metallography …
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Identification of nitrides in type 304 stainless steel
… utilizing both X-ray diffraction and metallography techniques. The results implied that the nitrogen combines principally with the iron in the stainless steel forming three iron nitrides - Fe₄N, Fe₃N, and Fe₂N. The alloy was selected because it contained a minimum number of elements …
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The microstructure and some phase transformation characteristics of the dual phase steel 3CR12
Oilatometry and metallography have been used to establish the phase transformation diagram of a steel containing 12% chromium and 0,03% carbon. A dual phase material with attractive mechanical properties and adequate corrosion resistance can be achieved by careful control of alloy content and heat …
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Estudo teórico da cinética do primeiro estágio de grafitização de um ferro maleável perlítico com o acompanhamento de sua morfologia no microscópio eletrônico de varredura
… could be used satisfactorily in the qualitative metallography of malleable cast irons,was achieved.
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The Effect of Phase Transformation on The Fatigue Crack Growth Rate of Austenitic Stainless Steels Tested in Argon and Hydrogen Atmospheres
… magnetic permeability and by using quantitative metallography. The phase present along the path of the fatigue crack was determined by using glancing incidence electron diffraction.
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Formation of Ti₃Al and its embrittling effects on titanium-aluminum alloys
… aluminum. The investigating tools were optical metallography, the Brown-type stress corrosion test and the Charpy V-notch Impact test. Segregated microstructures resulting from annealing in the (α+β) region were found to be extremely difficult to homogenize below the α-transus and could possibly …
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Evaluation of cracking and localized corrosion behavior of cladding materials
… the localized corrosion susceptibility. The metallography and morphology of failure were analyzed by optical microscopy and scanning electron microscopy (SEM), respectively. No cracking was observed under constant loaDing However, the SSR testing revealed enhanced ductility and reduced …
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Multifaced stone and ceramic moulds from Bronze Age Anatolia : building an analytical protocol of mould properties and behavior during the process of metal casting
… controlled casting experiments during phase II. Metallography on several phase II cast objects provides additional information on heat flow through the stone. In phase III, the protocol is modified appropriately for the non-destructive study of four archaeological moulds using x-ray diffraction …
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Characterization of Uranium Carbide Microspheres In An Inert Zirconium Carbide Matrix For Gas Fast Reactors
… was developed involving an inclined plane. Metallography was done using the LECO SS-1000 grinder/polisher system. Quantitative analysis and imagery were gathered using scanning electron microscopy (SEM), back scattering electron microscopy (BSE), electron microprobe for quantitative analysis …
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The fracture characteristics of a boron containing high strength low alloy steel
… has been carried out using quantitative metallography, scanning electron microscopy and transmission electron microscopy.The effect of heat treatment on the steel's hardenabilityand mechanical properties has been studied so thatsuggestions to produce optimum properties of RQT 701 could be …
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Stress and fatigue analysis of SVI-tested camshaft lobes
… for the most abusively ground lobe (confirmed by metallography), and temper burn for the remaining lobes. X-ray residual stress results made in the opening ramp of the tested lobes show evidence of residual stress relaxation. X-ray line width data as a function of depth does not correlate with …
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Impact fracture of embrittled stainless steels
… steel have been studied by impact testing, metallography, and SEM fractography. New data for uncharged and hydrogen-charged specimens of Types 304L and 316L austenitic stainless steels show significant hydrogen effects on the impact behavior of both materials. The Type 316L specimens showed …
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The effects of porosity on the out-of-plane tensile strength of laminated composites
… for a representative number of specimens by metallography and optical analysis methods. This data was combined with the out-of-plane tensile data and used in the theoretical model, prepared by Brown et al, to predict the out-of-plane strength as a function of porosity. The predicted strength …
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An Analysis of Microstructure and Corrosion Resistance in Underwater Friction Stir Welded 304L Stainless Steel
… loop EPR testing and oxalic acid electro-etched metallography. Results were compared to base metal, ambient FSW, and arc welds. Upper and lower sensitization localization bands were identified in the UWFSWs. Although higher sensitization levels were present in UWFSWs compared to the arc weld, …
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An investigation of wear and the performance of steels in the gold mining industry
… and transmission electron microscopy, optical metallography and microhardness studies. It was found that as the nominal load on the abrasive increased, the mode of material became more severe, the depth of deformation increased and the surface hardness increased. Attempts were made to explain …
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Effect of pattern and coating properties on defect formation in aluminum lost foam castings
… scanning electron microscopy (SEM), and optical metallography. Auger results revealed that the color of the defect changed with carbon layer thickness. SEM imaging showed the presence of wrinkles on fold surfaces while no wrinkles were found on the surface of pores"--Abstract, page iii.</p>
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