Search Results - "Higginson, R. L."

Whisker growth morphology of high temperature oxides grown on 304 stainless steel by Higginson, R.L., Green, G.

“…► The oxidation of as-cast 304 stainless steel is related to the surface finish. ► Nodular growth was seen at extended oxidation times. ► Whisker growths…”
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Precipitation of NbC in a model austenitic steel by Rainforth, W.M., Black, M.P., Higginson, R.L., Palmiere, E.J., Sellars, C.M., Prabst, I., Warbichler, P., Hofer, F.

“…A model Fe–30 wt% Ni, 0.1 C, 1.61 Mn, 0.1 Nb microalloyed steel, that simulates conventional microalloyed C–Mn steels, but does not transform from the…”
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Using a plasma FIB system to characterise the porosity through the oxide scale formed on 9Cr-1Mo steel exposed to CO2 by Coghlan, L., Shin, Aya, Pearson, Jonathan, Jepson, Mark. A. E., Higginson, R. L.

“…Focused ion beam microscopy and scanning electron microscopy have been used to characterise the porosity of the oxide scale of an experimental 9Cr–1Mo steel…”
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Phase determination and microstructure of oxide scales formed on steel at high temperature by WEST, G. D., BIROSCA, S., HIGGINSON, R. L.

“…Summary Even in simple low‐alloy steels the oxide scales that form during hot working processes are often a complex mixture of three iron oxide phases:…”
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Microstructural and microtextural characterization of oxide scale on steel using electron backscatter diffraction by Birosca, S., Dingley, D., Higginson, R. L.

“…Summary High‐temperature oxidation of steel has been extensively studied. The microstructure of iron oxides is, however, not well understood because of the…”
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Effects of processing parameters on relative density, microhardness and microstructure of recycled Ti–6Al–4V from machining chips produced by equal channel angular pressing by Shi, Q., Tse, Y.Y., Higginson, R.L.

“…Ti–6Al–4V was recycled from machining chips by using equal channel angular pressing (ECAP). Samples were pressed through a die up to 8 passes at moderate…”
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Complex precipitation behaviour in a microalloyed plate steel by Poths, R.M, Higginson, R.L, Palmiere, E.J

“…EDX analysis has been used to detect precipitates containing titanium and niobium, which have been found at reheat temperatures up to 1250 deg C. Elemental…”
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Disagglomeration in thixoformed wrought aluminium alloy 2014 by Liu, D., Atkinson, H.V., Higginson, R.L.

“…Thixoforming is a type of semi-solid metal processing, which involves the processing of alloys in the semi-solid state. Disagglomeration of solid globules…”
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Modelling carburisation in 9Cr-1Mo ferritic steel tube substrates in experimental CO2 atmospheres by Karunaratne, M.S.A., Yan, S., Thomson, R.C., Coghlan, L., Higginson, R.L.

“…[Display omitted] •Both geometry and chemistry play a vital role in breakaway oxidation initiation.•Carbide precipitation impedes carbon diffusion leading to…”
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Texture development in oxide scales on steel substrates by Higginson, R.L., Roebuck, B., Palmiere, E.J.

“…Oxide scale growth and microstructures on steels are complex and depend on a large number of variables e.g. temperature, time, atmosphere and alloying…”
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Characterisation of multicomponent scales by electron back scattered diffraction (EBSD) by Burke, D.P, Higginson, R.L

“…Synthetic scales were prepared on small samples of Interstitial Free (IF) steel. it is found that diagram that Electron Back Scattered Diffraction (EBSD) can…”
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Microstructural characterization of autogenous laser welds on 316L stainless steel using EBSD and EDS by KELL, J., TYRER, J. R., HIGGINSON, R. L., THOMSON, R. C.

“…Summary This research is concerned with autogenous welding of 316L stainless steel and the microstructure generated by such a process. Autogenous welding does…”
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An investigation into the use of electron back scattered diffraction to measure recrystallised fraction by Black, M.P, Higginson, R.L

“…Electron Back-Scattered Diffraction (EBSD) is a very valuable tool in the study of recrystallisation kinetics. By careful mapping of partially recrystallised…”
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The use of holographic optical elements (HOE's) to investigate the use of a flat irradiance profile in the control of heat absorption in wire-fed laser cladding by Goffin, N.J., Higginson, R.L., Tyrer, J.R.

“…•Holographic optics were used to compare Gaussian and flat square laser beams.•The flat square beam gave wetting at a reduced power density.•The flat square…”
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Using wire shaping techniques and holographic optics to optimize deposition characteristics in wire-based laser cladding by Goffin, N. J., Higginson, R. L., Tyrer, J. R.

“…In laser cladding, the potential benefits of wire feeding are considerable. Typical problems with the use of powder, such as gas entrapment, sub-100% material…”
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The effect of strain path reversal during hot rolling on austenitic stainless steel by Higginson, R.L, Sellars, C.M

“…During flat rolling the metal undergoes complex strain paths due to the interaction of the stock with the rolls. These changes in strain path affect the stored…”
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The effect of electroplating parameters and substrate material on tin whisker formation by Ashworth, M.A., Wilcox, G.D., Higginson, R.L., Heath, R.J., Liu, C., Mortimer, R.J.

“…•Effect of electrodeposition parameters on tin whisker growth has been evaluated.•Reduced whisker growth from deposits prepared at higher deposition current…”
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The effect of microstructure on the oxidation and carburisation of 9Cr-1Mo steel exposed to CO2 by Coghlan, L., Yan, S., Shin, A., Pearson, J., Jepson, M.A.E., Higginson, R.L.

“…[Display omitted] •Substrate carbide distribution is dictated by the substrate microstructure.•Formation of carbides leads to elemental segregation, dependant…”
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Dispersion of complex carbides at the oxidation front during the oxidation of 9Cr-1Mo steel by Coghlan, L., Yan, S., Shin, Aya, Pearson, J., Jepson, M.A.E, Higginson, R.L.

“…[Display omitted] •Multi-elemental complex carbides develop in 9Cr-1Mo steel exposed to CO2.•Both M7C3 and M23C6 have been identified in a multi-component…”
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In situ observation of the oxidation of S32101 duplex stainless steel at 900°C by Jepson, M.A.E., Higginson, R.L.

“…► The oxidation of duplex stainless steel has been studied in situ using an ESEM. ► Different oxide structures and morphologies form on the different phases. ►…”
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