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Prof.L.A.CornishPosition: Professor:SchoolofChemicalandMetallurgicalEngineering Director:DST-NRFCentreofExcellenceinStrongMaterials Director:AfricanMaterialsScienceandEngineeringNetwork (AMSEN)Qualifications: BSc(Hons)(Birmingham),MSc(Birmingham),PhD(Birmingham) DiplomainManagementStudies(DIHE,Bournemouth), BA(OpenUniversity)Phone: 011-717-6876Email: lesley.cornish@wits.ac.zaOrganisationalUnit: DST-NRFCentreofExcellenceinStrongMaterials SchoolofChemicalandMetallurgicalEngineeringRoom: RichardWard,Room402

ResearchInterestsAlloydevelopmentandderivationofphasediagrams,bothexperimentallyandbycomputation,toenablethedevelopmentofalloysforspecificapplications,including:structural,andshapememory.Characterisationofalloysformicrostructureandphaseanalysis.EspeciallyinterestedinWC-Cobasedalloys,steels,andplatinum-basedalloys.

PublicationsRecentPublications:K.Maweja,L.A.CornishandN.Can,Transformationandalloyingmechanismsinsub-stoichiometrictitaniumcarbonitrides-tungstenhighenergyballmilledpowders,InternationalJournalforRefractoryMetalsandHardMetals,29(2)(2011)312-319.

K.Maweja,L.A.CornishandN.Can,AnnealingbehaviourofTi(C,N)-Wmechanicalallowedpowderspre-reactedwithAl,InternationalJournalforRefractoryMetalsandHardMetals,29(4)(2011)445-451.

K.Maweja,L.A.CornishandN.Can,Formationmechanismofnanocrystallinetungsten-titaniumaluminidesbyballmillingofTi(C,N)–Wpowdersatsubzerotemperatures,PowderTechnology,211(2-3)(2011)221-225.

K.D.Njoroge,G.O.Rading,J.M.Kihiu,M.J.WitcombandL.A.Cornish,Dynamicanalysisofdislocationcoresintheα-Felatticeusingtheembeddedatommethod:theFelattice,InternationalJournalofComputationalEngineeringResearch,2(3),851-859(May-June2012).

A.M.Venter,T.Pirling,T.Buslap,A.Streuwer,T.P.Ntsoane,O.P.Oladijo,L.A.CornishandN.Sacks,SystematicinvestigationofresidualstrainsassociationwithWC-Co,SurfaceCoatingsandTechnology,206(19-20)(2012)4011-4020.

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O.P.Oladijo,A.M.Venter,L.A.CornishandN.Sacks,X-raydiffractionMeasurementofResidualStressinWC-CoThermally-SprayedCoatingsontoMetalSubstrates,SurfaceCoatingsandTechnology,206(23)(2012)4725-4729.

J.K.Odusote,L.A.Cornish,L.H.ChownandR.M.Erasmus,IsothermalOxidationBehaviourofaTwo-phaseγ/γʹPrecipitation-hardenedQuaternaryPt-basedAlloyinAirat1350°C,OxidationofMetals,78(1-2)(2012)123-143.

J.K.Odusote,L.A.CornishandL.H.Chown,OxidationKineticsandMechanismsofGrowthofAluminaScaleonPrecipitation-HardenedPt-Al-Cr-RuAlloys,CorrosionScience,63(2012)119-128.

K.Maweja,N.Can,L.A.Cornish,EffectsoftungstenandaluminiumontheoxidationandphaseformationinmechanicallymilledTi(C,N)-W-Alsystems,JournaloftheEuropeanCeramicSociety,32(13)(2012)3583-3592.

K.Maweja,N.Can,L.A.Cornish,PolycrystallinecubicboronnitridesinteredwithTi(C,N)-W-Almechanicallyalloyedbinders,JournaloftheEuropeanCeramicSociety,32(13)(2012)3593-3601.

O.P.Oladijo,N.Sacks,L.A.CornishandA.M.Venter,Effectofsubstrateonthe3bodyabrasionwearofHVOF17wt%Cocoatings,InternationalJournalforRefractoryMetalsandHardMetals,35(2012)288-294.

F.M.L.Mulaudzi,L.A.Cornish,G.A.SlabbertandM.J.Papo,MetaldustingonAlloys602CAand800,J.SouthAfricanInstituteofMiningandMetallurgy,7A(July2012)589-600.

I.A.Mwamba,L.A.CornishandE.vanderLingen,Microstructural,mechanicalandoxidationpropertyevolutionofgamma-TiAlalloywithpreciousmetaladditions,J.SouthAfricanInstituteofMiningandMetallurgy,7A(July2012)517-526.

B.O.Odera,L.A.Cornish,M.B.Shongwe,G.O.RadingandM.J.Papo,As-CastandHeatTreatedAlloysofthePt-Al-VSystematthePt-RichCorner,J.SouthAfricanInstituteofMiningandMetallurgy,7A(July2012)505-515.

O.A.Olaseinde,J.W.vanderMerwe,L.A.CornishandP.A.Olubambi,ElectrochemicalstudiesofFe-21Cr-1Niduplexstainlesssteelswith0.15wt%rutheniumatdifferenttemperatures,J.SouthAfricanInstituteofMiningandMetallurgy,7A(July2012)535-538.

M.B.Shongwe,L.A.Cornish,M.J.WitcombandM.JPapo,TEMstudiesofPt-Al-Cr-Rualloys,J.SouthAfricanInstituteofMiningandMetallurgy,7A(July2012)551-558.

B.O.Odera,L.A.Cornish,M.J.PapoandG.O.Rading,Electrolyticetchingofplatinum-aluminiumbasedalloys,PlatinumMetalsReview,56(4)(Oct2012)257-261.

R.Süss,L.A.CornishandM.J.Witcomb,InvestigationofIsothermalSectionsat600˚Cand1000˚CinthePt-Al-CrSystem,J.Mining&Metallurgy,B-Metallurgy,48(3)B(2012)367-374.

G.A.Slabbert,F.M.L.Mulaudzi,L.A.Cornish,M.J.Papo,V.MoruduandJ.Zhang,Theeffectofthematrixstructureonthemetaldustingrateinhydrocarbonenvironments,J.SouthAfricanInstituteofMiningandMetallurgy,113(2)(February2013)81-90.

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I.A.Mwamba,L.A.CornishandE.vanderLingen,AcomparativeassessmentofTi-47.5at.%Alcathodicallymodifiedbypreciousmetaladdition,J.SouthAfricanInstituteofMiningandMetallurgy,113(2)(February2013)98-104.

F.M.L.Mulaudzi,L.A.Cornish,G.A.Slabbert,M.J.PapoandJ.Zhang,AstudyofmetaldustingcorrosiononFe-andNi-basedalloys,J.SouthAfricanInstituteofMiningandMetallurgy,113(2)(February2013)121-128.

J.K.Odusote,L.A.Cornish,L.H.ChownandR.M.Erasmus,DeterminationofstressinaluminascaleusingphotostimulatedCr3+luminescencepiezospectroscopy,CorrosionScience,70(2013)276-284.

J.K.Odusote,L.A.Cornish,L.H.ChownandR.M.Erasmus,DeterminationofstressinaluminascaleusingphotostimulatedCr3+luminescencepiezospectroscopy,CorrosionScience,70(2013)276-284.

R.M.Genga,L.A.CornishandG.Akdogan,EffectofMo2CadditionsonthepropertiesofSPSmanufacturedWC-TiC-Nicementedcarbides,InternationalJournalofRefractoryMetalsandHardMaterials,41(2013)12-21.

J.K.Odusote,L.A.Cornish,L.H.ChownandR.M.Erasmus,AssessmentoftheoxidationbehaviourofaPt-basedalloyforhightemperatureapplications,J.MaterialsEngineeringandPerformance,22(11)(2013)3466-3475.

A.M.Venter,O.P.Oladijo,V.Luzin,L.A.CornishandN.Sacks,PerformancecharacterizationofmetallicsubstratescoatedbyHVOFWC-Co,ThinSolidFilms,549(2013)330-339.

AndrewM.Venter,O.PhilipOladijo,LesleyA.CornishandNatashaSacks,CharacterisationoftheresidualstressinHVOFWC-Cocoatingsandsubstrates,MaterialScienceForum,768-769(2014)280-285.

AndrewM.Venter,VladimirLuzin,O.PhilipOladijo,LesleyA.CornishandNatashaSacks,StudyofinteractivestressesinthinWC-Cocoatingofthickmildsteelsubstrateusinghigh-precisionneutrondiffraction,MaterialsScienceForum,772(2014)161-165.

O.P.Oladijo,A.M.VenterandL.A.Cornish,CorrelationbetweenresidualstressesandabrasivewearofWC-17Cocoatings,InternationalJournalofRefractoryMetalsandHardMaterials,44(2014)68-76.

O.A.Olaseinde,J.W.vanderMerweandL.A.Cornish,Characterisationandcorrosionbehaviourofselectedduplexstainlesssteelsinacidicandacidic-chloridesolutions,AdvancesinChemicalEngineeringandScience(OpenAccess),4(2014)89-93.

J.K.Odusote,L.A.Cornish,L.H.ChownandR.M.Erasmus,MeasurementofthestressinoxidescalesdevelopeduponoxidationofaPt-basedalloyinairat1250°C,InternationalJournalofAppliedCeramicTechnology,11(3)(2014)602-610.

I.A.Mwamba,L.A.CornishandE.vanderLingen,EffectofplatinumgroupmetalsonmicrostructureandhightemperatureoxidationbehaviourofTi-47.5at.%Al,CorrosionEngineeringandTechnology,49(3)(2014)180-188.

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A.I.Popoola,L.H.ChownandL.A.Cornish,TheoreticalinvestigationsofPt3X(X=Al,Sc,Hf,Zr)groundstate,TurkishJournalofPhysics,38(1)(2014)10-16.

B.O.Odera,L.A.Cornish,M.J.PapoandG.O.Rading,ExperimentalSolidificationProjection,LiquidusSurfaceProjectionandIsothermalSectionat1000°CforthePt-Cr-VSystem,J.PhaseEquilibriaandDiffusion,35(4)(2014)476-489.

S.I.Hango,L.A.Cornish,L.H.Chown,J.W.vanderMerweandF.P.L.Kavishe,Erosion-Corrosionofhardfacingmaterialsexposedtominewaterconditions,InternationalScienceandTechnologyJournalofNamibia(ISTJN),4(2014)90-105.

K.D.Njoroge,G.O.Rading,J.M.Kihiu,M.J.WitcombandL.A.Cornish,Theimpactofinterstitialcarbonondislocationmotionintheα-Felattice,InternationalJournalofComputationalEngineeringResearch,4(12)(2014)5-9.

R.M.Genga,L.A.Cornish,G.Akdogan,C.PoleseandJ.Garrett,Abrasionwear,thermalshockandimpactresistanceofWC-cementedcarbidesproducedbyPECSandLPS,InternationalJournalofRefractoryMetalsandHardMaterials,49(2015)133-142.

R.M.Genga,L.A.Cornish,G.AkdoganandJ.Westraadt,MicrostructureandmaterialpropertiesofSPSmanufacturedWC-NbC-CoandWC-TiC-Nicementedcarbides,InternationalJournalofRefractoryMetalsandHardMaterials,49(2015)240-248.

K.D.Njoroge,G.O.Rading,J.M.Kihiu,M.J.WitcombandL.A.Cornish,Thedislocationcoremisfitpotential,ComputationalMaterialsScience,100(PB)(2015)195-202.

B.O.Odera,M.J.Papo,R.Couperthwaite,G.O.Rading,D.BillingandL.A.Cornish,High-orderadditionstoplatinum-basedalloysforhightemperatureapplications,J.SouthAfricanInstituteofMiningandMetallurgy,115(March2015)241-250.

S.H.Coetzee,L.A.Cornish,M.J.WitcombandP.K.Jain,Liquidussurfaceprojectionandisothermalsectionat1200°CofNi-Ru-Y,J.PhaseEquilibriaandDiffusion,36(2)(2015)149-168.

O.A.Olaseinde,L.A.CornishandJ.W.vanderMerwe,Effectsofrutheniumadditiononthephasesof2101duplexstainlesssteels,InternationalJournalofMetallurgicalEngineering,4(1)(2015)6-11.

L.A.Cornish,R.Süss,S.Motha,A.M.Ukpong,M.B.Shongwe,M.J.Witcomb,L.H.ChownandA.Watson,ApplicationofaThermodynamicDatabasetoPredictthePhasesandMicrostructureofPt-Al-Cr-RuAlloys,MaterialsToday:Proceedings,2(2015)4090-4099.

R.A.Couperthwaite,L.A.Cornish,I.A.MwambaandM.J.Papo,EffectofProcessingRouteontheMicrostructureandPropertiesofanFe-AlAlloywithAdditionsofPreciousMetals,MaterialsToday:Proceedings,2(2015)3932-3942.

D.E.P.Klenam,C.Polese,L.H.Chown,S.KwofieandL.A.Cornish,MechanicalbehaviourofpackcarburisedAISI316Lausteniticstainlesssteel,J.SAIMM,115(December2015)1183-1191.

U.Curle,L.A.CornishandG.Govender,RelatingmechanicalpropertiesofAl-Zn-Mg-Cualloyscomposition,J.MaterialsandDesign,99(2016)211-218.

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Awards:F.E.IPrizetotheAuthorsoftheBestPaperonAnyAspectofElectronMicroscopyPublishedinaRecognisedInternationalJournalduringthetwelvemonthsending30June2006,R.Süss,L.A.CornishandM.J.Witcomb,“InvestigationofAs-castAlloysinthePt-Cr-RuSystem”,J.AlloysandCompounds,Vol.416(1-2),June2006,p.80-92.

MaterialsScienceInternationalTeamCertificateformanycontributionsandscientificcollaboration,for“Non-FerrousMetalSystems”andtheMSITWorkplace,February2007.

JointF.E.IPrize(PhysicalSciences)totheAuthorsoftheBestPaperonAnyAspectofElectronMicroscopyPublishedinaRecognisedInternationalJournalduringthetwelvemonthsending30June2007.A.Douglas,J.H.Neethling,R.Santamarta,D.SchryversandL.A.Cornish,“UnexpectedorderingbehaviourofPt3Alintermetallicprecipitates”,J.AlloysandCompounds,432(2007)96–102.

MaterialsScienceInternationalTeamCertificateforoutstandingcontributionstothecriticalevaluationofdataandknowledgeonternaryiron-containingsystems,for“IronSystems”andtheMSITWorkplace,February2009.

FellowoftheRoyalSocietyofSouthAfrica,November2009.InductedSeptember2010.

FEIPrize(PhysicalSciences)forthebestpaperonanyaspectofelectronmicroscopythatwaspublishedbyanyoneinSouthAfricainaninternationaljournalduringthe12monthsending30June2008,R.Süss,L.A.CornishandM.J.Witcomb,“Investigationofisothermalsectionsat1000oCand600oCinthePt-Cr-Rusystem”,J.AlloysandCompounds,457,310-322(2008).

‘TopDocument'fortheJanuary2009issue,asbeingthe'mostpopulardocuments'onthePlatinumMetalsReviewsite:L.A.Cornish,R.Süss,A.Douglas,L.H.ChownandL.Glaner,ThePlatinumDevelopmentInitiative:Platinum-BasedAlloysforHighTemperatureandSpecialApplications:PartI,PlatinumMetalsReview,53(1)(2009)2-10.

FEIPrize(PhysicalSciences)forthebestpaperonanyaspectofelectronmicroscopythatwaspublishedbyanyoneinSouthAfricainaninternationaljournalduringthe12monthsending30June2010,R.Süss,L.A.CornishandM.J.Witcomb,“InvestigationofAs-castAlloysinthePt-Al-CrSystem”,J.AlloysandCompounds,490(2010)124-144.

PartoftheteamthatwasaR&DMagazine2011,R&D100Winners,forNovelplatinum/chromiumalloyforthemanufactureofimprovedcoronarystents(LifeSciences);Primarydeveloper:NationalEnergyTechnologyLaboratory,USA;byBostonScientificCorporationInc.andCarpenterSpecialtyAlloys,MinitubesZACTechnisud,AccellentInc.,forworkdonewhilstatMintek.

CorrosionInstituteofSouthernAfricaResearchAward2011,fortheUniversityoftheWitwatersrandtoadvancecorrosionresearchandcapacitybuildinginSouthAfrica,togetherwithDrA.Mngomezulu,CEO,Mintek,forcollaborationfortheapplicationtoSARChIforaChairincorrosion.

Winnerofthe2012/2013NationalScienceandTechnologyForum“EskomResearchCapacityDeveloperoverthelast5to10years”award(female).

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SupervisionAward:FacultyofEngineeringandtheBuiltEnvironment,inrecognitionofoutstandingcontributionstopostgraduatesupervision,March2015.

SpecialInterestsPlatinum-basedalloysforapplicationinaggressiveenvironments

WC-Cobasedalloys

Steels

AffiliationsMemberoftheSouthAfricanInstituteofFoundrymen(SAIF)

MemberoftheSouthAfricanInstituteofMiningandMetallurgy(SAIMM)

MemberoftheMicroscopySocietyofSouthernAfrica(MSSA)

MemberoftheCorrosionInstituteofSouthAfrica(CorrISA)

FellowoftheRoyalSocietyofSouthAfrica(RSSAf)

OtherInterestsBirdwatching,Photography,Conservation,Hiking,Travelling,Reading.

RecentTeachingCHMT3025,CrystalStructureandAnalysis

CHMT2015,MaterialsEngineering.

CHMT1000IntroductiontoProcessEngineering.

CHMT4004ResearchProject.

CHMT4017StructureandPropertiesofEngineeringMaterials