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Showing 1 to 10 of 10 for “"UFG"”.
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Characterizing Plastic Deformation Mechanisms in Metal Thin Films using In Situ Transmission Electron Microscopy Nanomechanics
… Nanocrystalline (NC) and ultrafine-grained (UFG) metal thin films show increased strength when compared to their coarse-grained equivalents, and as a result, have been proposed as viable solutions to high-strength MEMS materials. The increased yield strength is generally attributed to the …
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Investigating the Effect of Austenite Grain Size and Grain Boundary Character on Deformation Twinning Behavior in A High-Manganese TWIP Steel: A TEM In-Situ Deformation Study
… ultrafine-grained metals. The ultrafine-grained (UFG) high manganese austenitic twinning-induced plasticity (TWIP) steels have been found to overcome the strength-ductility trade-off but their underlying mechanism of discontinuous yielding behavior has not been well understood. In this study, our …
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Effect of incremental equal channel angular pressing (I-ECAP) on the microstructural characteristics and mechanical behaviour of commercially pure titanium
… and is capable of achieving ultrafine grain (UFG) structure in metals. UFG materials are characterized by an average grain size of <1 μm and with mostly high angle grain boundaries. These materials exhibit exceptional improvements in strength, superplastic behaviour and in case for titanium, …
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Stress corrosion cracking behavior of friction stir processed ultrafine grained light metal alloys
… behavior was proposed. Ultrafine fine grained (UFG) microstructure showed one order magnitude lower corrosion rate.</p> <p>Grain refinement achieved through different FSP parameters showed lower corrosion currents for Al-Mg alloy as compared to the base alloy. The significant increment in linear …
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Construcción de periodismo digital: una aproximación académica y práctica
… Cañas (UCA), Universidad Francisco Gavidia (UFG), Universidad Tecnológica de El Salvador (UTEC) y Universidad Don Bosco (UDB).
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Investigation of operating parameters in a vertical stirred mill
… mill (Deswik mill), in an ultrafine grinding (UFG) application of MG2 reef in the bushveld igneous complex. The operating variables that were investigated are stirrer speed, solids concentration, media size and media filling. The Kwade stress energy model was tested on the grinding results. The …
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Effect of nano-scale twinning on the fracture, fatigue and wear properties of copper
… nano scale growth twins in ultra fined grained (UFG) Cu through pulsed electro deposition leads to an increase in strength while maintaining a significant amount of ductility. Besides, introduction of deformation twins by the process of dynamic plastic deformation (DPD) involving repeated …
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Microstructure and mechanical properties of aluminium based nanocomposites strengthened with alumina and silicon carbide
… HEMM was used to fabricate Ultra-Fine Grained (UFG) and nanostructured Al- (2.5-10) vol. %Al₂O₃ composites with a dispersion of nano alumina within the matrix and Al-4wt%Cu- (2.5-10) vol%SiC with two different sizes of SiC in the micro and nano ranges. A UFG structure in the Al and …
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Cryomilling and Spark Plasma Sintering of 2024 Aluminium Alloy
… of dislocations within nanocrystalline/UFG, resulting in increased strain hardening and enhancement of strain rate sensitivity of the flow stress. Hot workability of metals depends on several parameters. Temperature and strain rate affect the flow stress and the strain rate sensitivity. …
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Statisches und zyklisches Verformungsverhalten fein- und ultrafeinkörniger Werkstoffzustände eines metastabilen austenitischen Stahls
Ein metastabiler austenitischer Stahl der Zusammensetzung 16Cr-7Mn-6Ni wurde einerseits über die Methode der Rückumwandlung in Werkstoffzustände verschiedener Korngrößen überführt und andererseits additiv über das Electron Beam Melting (EBM)-Verfahren gefertigt. Das statische und das zyklische …