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Showing 1 to 20 of 147 for “"deformation mechanisms"”.
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Molecular deformation mechanisms in polyethylene.
… with details of the molecular changes caused by deformation and also establishes any conformational differences between linear and branched polyethylene before, during and after deformation. Four blends of isotopically labelled polymers of different types, rapidly quenched from the melt, have …
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Deformation Mechanisms in Pd Nanowhiskers
… instead of interacting and promoting traditional deformation behavior. Systematic experimental investigations will be crucial to developing the necessary understanding, although they remain challenging due to limited access to suitable test specimens and testing methodologies for directly …
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Deformation mechanisms beneath shallow foundations
… experiments were conducted to investigate the mechanisms governing the settlement of shallow circular foundations on clay and saturated sand models. Clay model tests were performed on soft or rm kaolin beds, depending on its pre-consolidation. Sand model tests were performed on relatively loose …
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Deformation mechanisms in rapidly solidified aluminum alloys
The deformation mechanisms of four rapidly solidified (RS) and hot extruded aluminum alloys were investigated. Al-8.8Fe-3.7Ce (all compositions in wt%) and Al-8.9Fe-6.9Ce alloys produced from RS powders and two Al-8Fe-2Mo alloys one produced from RS ribbons and the other from powders, respectively, …
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Deformation Mechanisms at Grain Boundaries in Polycrystal Plasticity
… in predicting the flow stress using alternative deformation mechanisms. The effect of boundary structure on the plastic deformation of metals is modeled by computing the aggregate response of composite grains in the visco-plastic self-consistent scheme. Assuming a planar boundary, the composite …
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Deformation mechanisms in a polycrystalline Ni-based superalloy
… raised temperature window extends into a new deformation mechanism regime that needs to be explored and understood to be able to design and optimise new and existing Ni-based disc superalloys. For this purpose, this work investigates the deformation behaviour of the established coarse-grained …
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Continuum models of deformation mechanisms in nanocrystalline metals
… continuum-scale descriptions of nanoscale deformation and failure mechanisms in nanocrystalline metals. The research has focused on three specific aspects: the influence of grain boundary mechanisms on the grain-size dependence of the yield stress, the influence of grain boundary friction …
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A theoretical investigation of deformation mechanisms in calcite
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1964.
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Atomistic simulation of plastic deformation mechanisms in crystalline polyethelene
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1994.
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High temperature deformation mechanisms and strain heterogeneities in calcite rocks
… Such marble sequences play a key role in crustal deformation processes. Despite extensive field and laboratory investigation, many questions remain concerning the mechanical behavior of these rocks. For example, the mechanical behavior of different limestones and marbles differ greatly, possibly …
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Characterization and modeling of deformation mechanisms in molybdenum-rhenium alloys
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1996.
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Deformation Mechanisms and Strain Localization in the Mafic Continental Lower Crust
… mineralogical assemblages and high-grade deformation conditions (T > 700 °C and P > 6 Kbar): the Seiland Igneous Province in northern Norway (case-study 1) and the Finero mafic complex in the Italian Southern Alps (case-study 2). Case-study 1 investigates a metagabbroic dyke embedded in a …
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Sand Deformation Mechanisms and Earth Pressures Mobilised with Retaining Wall Movements
… factors of safety, while the assessment of wall deformations is based on serviceability limit state calculations. Such an inconsistency has caused much uncertainty and hence inevitably excessive conservatism in retaining wall designs. The aim of this research is consequently to propose a design …
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Shear zones of the Maud Belt, Antarctica : kinetics and deformation mechanisms
… Land, Antarctica, have experienced at least two deformation phases related to the Grenvillian and Pan- African orogenies. Deformation is heterogeneous and strain is commonly localized within shear zones. The two study areas H.U. Sverdrupfjella and Neumayerskarvet mainly consist of paragneisses …
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Microstructural Deformation Mechanisms and Optimization of Selectively Laser Melted 316L Steel
… a novel approach is utilized to investigate the deformation mechanisms at the microstructural level in 3D printed alloys. The complex in-situ heat treatments during 3D printing leaves a unique and complicated microstructure in the as-built 3D printed metals, particularly alloys. The …
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Advances in electron imaging and diffraction of material defects and deformation mechanisms
Made available in DSpace on 2021-09-17T02:34:33Z (GMT). No. of bitstreams: 2 HSIAO-DISSERTATION-2021.pdf: 4928409 bytes, checksum: 9b5ac5f0800a349d703c04d725aeb491 (MD5) LICENSE.txt: 4210 bytes, checksum: 437e804068b0b7d4d1ada9465ca8ac7d (MD5) Previous issue date: 2021-04-21
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Advanced experimental characterization of deformation mechanisms and temperature changes on novel alloys systems
… astonishing recoverability from excessive deformation and the latter possesses exceptional strength and ductility extending to cryogenic temperatures. This work investigates the high temperature response and elastocaloric effect of SMAs and strain hardening behavior of HEAs using advanced …
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Grain boundaries and creep deformation mechanisms in a high performance nickel-based superalloy
… is focused on the description of creep deformation in the new Rolls-Royce Alloy 12-1 polycrystalline nickel-based superalloy for disc application in gas turbine engines. In particular, this study aims to progress the understanding of the effect of grain boundaries in relation to the …
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