W.M. Rainforth
University of Sheffield
Analytical chemistryTransmission electron microscopyComposite materialTribologyMagnetic force microscopeMetallurgyMaterials scienceScanning electron microscopeCondensed matter physicsLayer (electronics)Aluminium alloyOxideAlloyCoatingPhase (matter)Grain boundaryAluminiumCrystallographyMicrostructureAustenite
270Publications
47H-index
4,890Citations
Publications 270
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#1Yidong Xu (University of Sheffield)H-Index: 3
#5Mingwen Bai (Coventry University)H-Index: 14
Abstract null null Titanium alloys are widely used in the field of orthopaedics, however, poor tribological performance arising from the low shear resistance and weak protection of the oxide layer limits their applicability. In this work, the tribocorrosion behaviour of novel β and α + β biomedical titanium alloys were studied in bovine serum solution under open circuit potential. Ti-5Mo-Fe-3Sn and Ti-6Al-4V ELI alloys were found to have the capability to repassivate when testing at a slower sli...
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#1Righdan Namus (University of Wasit)H-Index: 4
#2John Nutter (University of Sheffield)H-Index: 5
Last. W.M. Rainforth (University of Sheffield)H-Index: 47
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Abstract Ti6Al4V is used in a wide variety of engineering applications and extensively in orthopaedics implants because of the excellent combination of the high specific strength and superior corrosion resistance. However, Ti6Al4V possesses poor tribological properties. The present work investigated the effect of reciprocating sliding speed on tribocorrosion properties of Ti6Al4V alloy under cathodic and open circuit potentials in simulated body fluid. The results showed a strong influence of th...
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#1Qinyi Guo (USTB: University of Science and Technology Beijing)
#2Xianhao LiH-Index: 1
Last. Haiwen Luo (USTB: University of Science and Technology Beijing)H-Index: 20
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#1Peng Gong (University of Sheffield)H-Index: 6
#2John Nutter (University of Sheffield)H-Index: 5
Last. W.M. RainforthH-Index: 47
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Hydrogen embrittlement is shown to proceed through a previously unidentified mechanism. Upon ingress to the microstructure, hydrogen promotes the formation of low-energy dislocation nanostructures. These are characterized by cell patterns whose misorientation increases with strain, which concomitantly attracts further hydrogen up to a critical amount inducing failure. The appearance of the failure zone resembles the “fish eye” associated to inclusions as stress concentrators, a commonly accepted...
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#1Paloma Sirvent (URJC: King Juan Carlos University)H-Index: 4
#2Miguel Ángel Garrido (URJC: King Juan Carlos University)H-Index: 16
Last. Pedro Poza (URJC: King Juan Carlos University)H-Index: 17
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Abstract Cold spray (CS) coating technique is being studied as a potential solution for repairing aircraft Ti-6Al-4V components. This work is focused on the restoration of damaged components due to wear induced by vibrations. It is known that Ti-6Al-4V CS deposition shows difficulties to obtain non-porous coatings due to the high strength of this material, that is detrimental for wear resistance. In this sense, performing a post-heat treatment leads to lower porosity CS Ti-6Al-4V coatings and im...
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#1Righdan Namus (University of Wasit)H-Index: 4
#2W.M. Rainforth (University of Sheffield)H-Index: 47
Abstract CoCrMo alloys have been widely used in metal-on-metal hip replacements. They exhibit excellent long-term survival rates; however, recently, high failure rates associated with adverse local tissue reactions have been observed. CoCrMo alloys generally work extremely well; however, sometimes their wear rate is high. This work investigated protein adsorption effects on the tribocorrosion behaviour of CoCrMo biomedical-grade alloys under different surface and media conditions. The study of t...
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#1Carl Magnus (University of Sheffield)H-Index: 8
#2Joanne Sharp (University of Sheffield)H-Index: 14
Last. W.M. Rainforth (University of Sheffield)H-Index: 47
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Abstract This article presents a microstructural study on the role of incipient residual stress relaxation in TiC-particulate/SiC-matrix ceramic composite toughened by thermal expansion mismatch and phase transformation toughening. Exhaustive microstructural studies was undertaken using scanning electron microscopy and transmission electron microscopy following a wear test. It was found that the superposition of hydrostatic tensile stress induced at the surface following the sliding contact on t...
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The current study reports the detailed analysis of an observation of the local pinning of a slowly moving austenite-ferrite interface by a single nanosized oxidic particle. The observations were made during an in situ cyclic partial phase transformation experiment on a Fe-0.1C-1.0Mn alloy close to the inversion stage at which the interface migrates at a rather low velocity. The low velocity allowed capturing the interface pinning effect over a period of no less than 16 seconds. From our observat...
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#1Carl Magnus (University of Sheffield)H-Index: 8
#2Daniel Cooper (University of Sheffield)H-Index: 2
Last. W.M. Rainforth (University of Sheffield)H-Index: 47
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Abstract MAX phase composite Ti3SiC2–TiSi2–TiC based on the Tin+1SiCn system was synthesized by spark plasma sintering (SPS) under vacuum sintering conditions. The microstructural evolution upon synthesis and Vickers indentation contact damaged were characterized using scanning electron microscopy (SEM) and optical microscopy (OM). Tribological behaviour of the SPSed MAX phase composite was investigated under dry sliding ambient conditions for evidence of intrinsic lubricity as well as to unders...
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