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Scien.e Chin. Chemistry 2012年第8期55卷 1598-1607页

作者： HOWLETT P. C. GRAMET S. LIn.J. EFTHIMIADIS J. CHEn.X. B. birbilis n. FORSYTH M. ARC Cen.re of Excellen.e for Electromaterials Scien.e Institute for Frontier Materials Deakin Univerxlty Burwood Campus Burwood Victoria 3125 Australia CAST Cooperative Research Cen.re Department of Materials Engineering Monash University Melbourne Victoria 3800 Australia

This work reveals the performan.e of a trihexyl(tetradecyl)phosphon.um bis(trifluoromethan.sulfon.l)amide ([P6,6,6,14][n.f2]) ion.c liquid (IL) con.ersion.coatin. upon.AZ91D. Such con.ersion.coatin.s represen. a n.vel aven.e for chromate replacemen.. An.optimization.of coatin. performan.e was pursued by careful alloy pretreatmen. to gen.rate a surface on.which the coatin. performs best, as the AZ91 substrate is distin.tly differen. from pure or dilute Mg alloys. The results reveal that a fun.tion.l con.ersion.coatin. can.be achieved, retardin. an.dic dissolution.kin.tics, causin. a sign.fican. decrease in.corrosion.rate. The coatin. efficacy is closely tied to the pretreatmen. performed, which dictates both the microstructural an. electrochemical heterogen.ity of the surface. The resultin. coatin.s were foun. to con.ain.MgxFx an. phosphon.um cation.related compon.n.s, the proportion. of which were depen.en. on.the pretreatmen..

关键词： AZ91D corrosion con.ersion.coatin. ion.c liquid pretreatmen.

A machin. learn.n. approach for accelerated design.of magn.sium alloys. Part A:Alloy data an. property space

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Journ.l of Magn.sium an. Alloys 2023年第11期11卷 3620-3633页

作者： M.Ghorban. M.Boley P.n.H.n.kashima n.birbilis Departmen. of Materials Scien.e an. En.in.erin. Monash UniversityVIC3800Australia Faculty of In.ormation.Techn.logy Monash UniversityVIC3800Australia College of En.in.erin. an. Computer Scien.e Australian National UniversityACT2601Australia Faculty of En.in.erin. Science and the Built EnvironmentDeakin UniversityVIC3125Australia

Typically, magn.sium alloys have been.design.d usin. a so-called hill-climbin. approach, with rather in.remen.al advan.es over the past cen.ury. Iterative an. in.remen.al alloy design.is slow an. expen.ive, but more importan.ly it does n.t harn.ss all the data that exists in.the field. In.this work, a n.w approach is proposed that utilises data scien.e an. provides a detailed un.erstan.in. of the data that exists in.the field of Mg-alloy design.to date. In.this approach, first a con.olidated alloy database that in.orporates 916 datapoin.s was developed from the literature an. experimen.al work. To an.lyse the characteristics of the database, alloyin. an. thermomechan.cal processin. effects on.mechan.cal properties were explored via composition.process-property matrices. An.un.upervised machin. learn.n.(ML) method of clusterin. was also implemen.ed, usin. un.abelled data, with the aim of revealin. poten.ially useful in.ormation.for an.alloy represen.ation.space of low dimen.ion.lity. In.addition. the alloy database was correlated to thermodyn.mically stable secon.ary phases to further un.erstan. the relation.hips between.microstructure an. mechan.cal properties. This work n.t on.y in.roduces an.in.aluable open.source database, but it also provides, for the first-time data, in.ights that en.ble future accelerated digital Mg-alloy design.

关键词： Magn.sium Alloy design Mg-alloy database Data an.lysis Data visualisation Un.upervised machin. learn.n.

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Lithium mappin. in.a Mg-9Li-4Al-1Zn.alloy usin. electron.en.rgy-loss spectroscopy

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Journ.l of Magn.sium an. Alloys 2023年第4期11卷 1170-1179页

作者： Yu Zhan. Laure Bourgeois Yu Chen.Zhuoran.Zen. n.ck birbilis Philip n.H.n.kashima Departmen. of Materials Scien.e an. En.in.erin. Monash UniversityVIC 3800Australia Mon.sh Cen.re for Electron.Microscopy Monash UniversityVIC 3800Australia College of En.in.erin. an. Computer Scien.e Australian National UniversityACT 2601Australia Faculty of Scien.e Engineering and Built EnvironmentDeakin UniversityVIC 3125Australia

Magn.sium-lithium alloys with high lithium con.en. have been.attractin. sign.fican. atten.ion.because of their low den.ity,high formability an. corrosion.*** properties are depen.en. on.the distribution.of lithium,which is difficult to map in.the presen.e of *** this work,a ratio spectrum-imagin. method with electron.en.rgy-loss spectroscopy(EELS)is demon.trated,which en.bles the mappin. of *** application.to LAZ941(Mg-9Li-4Al-1Zn.in.wt.%),this techn.que revealed that a key precipitate in.the microstructure,previously thought by some to be Mg_(17)Al_(12),is in.fact rich in.*** result was corroborated with a structural in.estigation.by high-an.le an.ular dark-field scan.in. tran.mission.electron.microscopy(HAADF-STEM),showin. this phase to be Al_(1-x)Zn.(x)Li,with xn.icates the poten.ial offered by this techn.que for mappin. lithium in.materials.

关键词： Lithium mappin. Magn.sium alloys Electron.en.rgy-loss spectroscopy(EELS) High-an.le an.ular dark-field scan.in. tran.mission.electron.microscopy(HAADF-STEM)

cardiGAn.A gen.rative adversarial n.twork model for design.an. discovery of multi prin.ipal elemen. alloys

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Journ.l of Materials Scien.e & Techn.logy 2022年第30期125卷 81-96页

作者： Z.Li W.T.n.sh S.P.O’Brien.Y.Qiu R.K.Gupta n.birbilis College of En.in.erin. an. Computer Scien.e The Australian National UniversityA.C.T.Acton 2601Australia Departmen. of Materials Scien.e an. En.in.erin. Monash UniversityClaytonVictoria 3800Australia Departmen. of Materials Scien.e an. En.in.erin. North Carolina State UniversityRaleighNC 27695USA

Multi-prin.ipal elemen. alloys(MPEAs),in.lusive of high en.ropy alloys(HEAs),con.in.e to attract sign.fican. research atten.ion.owin. to their poten.ially desirable *** MPEAs remain.un.er exten.ive research,tradition.l(***)alloy production.an. testin. are both costly an. timecon.umin.,partly due to the in.fficien.y of the early discovery process which in.olves experimen.s on.a large n.mber of alloy *** is in.uitive to apply machin. learn.n. in.the discovery of this n.vel class of materials,of which on.y a small n.mber of poten.ial alloys have been.probed to *** this work,a proof-of-con.ept is proposed,combin.n. gen.rative adversarial n.tworks(GAn.)with discrimin.tive n.ural n.tworks(n.s),to accelerate the exploration.of n.vel *** applyin. the GAn.model herein.it was possible to directly gen.rate n.vel composition. for MPEAs,an. to predict their *** verify the predictability of the model,alloys design.d by the model are presen.ed an. a can.idate produced-as *** suggests that the model herein.offers an.approach that can.sign.fican.ly en.an.e the capacity an. efficien.y of developmen. of n.vel MPEAs.

关键词： Alloy design Machin. learn.n. Gen.rative adversarial n.twork n.ural n.twork Multi-prin.ipal elemen. alloy High en.ropy alloys

Effect of multiaxial deformation.on.structure, mechan.cal properties, an. corrosion.resistan.e of a Mg-Ca alloy

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Journ.l of Magn.sium an. Alloys 2022年第1期10卷 284-298页

作者： n.Yu.Yurchen.o n.D.Stepan.v G.A.Salishchev V.n.Serebryan. n.S.Martyn.n.o E.A.Lukyan.va L.L.Rokhlin.n.birbilis S.V.Dobatkin.Y.Z.Estrin Belgorod State n.tion.l Research Un.versity BelgorodRussia Federal State Budget In.titution.of Scien.e A.A.Baikov Institute of Metallurgy and Materials Science.Russian Academy of SciencesMoscowRussia n.tion.l Un.versity of Scien.e an. Techn.logy"MISiS" MoscoicRussia Departmen. of Materials En.in.erin. Monash UniversityClaytonVIC 3800Australia Departmen. of Mechan.cal En.in.erin. The University of Western AustraliaMedian ds WA 6009、Australia

This article provides a report on.the effect of multiaxial deformation.MAD) on.the structure, texture, mechan.cal characteristics, an. corrosion.resistan.e of the Mg-0.8(wt.)% Ca alloy. MAD was carried out on.the alloy in.the as-cast an. the an.ealed states in.multiple passes, with a stepwise decrease in.the deformation.temperature from 450 to 250 ℃ in.50 ℃ steps. The cumulative true strain.at the en. of the process was 22.5. In.the case of the as-cast alloy, this resulted in.a refin.d microstructure characterized by an.average grain.size of 2.7 μm an. a fraction.of high-an.le boun.aries(HABs) of 57.6%. The correspon.in. values for the an.ealed alloy were 2.1 μm an. 68.2%. The predomin.n. mechan.sm of structure formation.was associated with discon.in.ous an. con.in.ous dyn.mic recrystallization.actin. in.con.ert. MAD was also shown.to lead to the formation.of a rather sharp prismatic texture in.the as-cast alloy, whilst in.the case of the an.ealed on. the texture was weaken.d. A displacemen. of the basal poles {00.4} from the periphery to the cen.er of a pole figure was observed. These chan.es in.the microstructure an. texture gave rise to a sign.fican. improvemen. of the mechan.cal characteristics of the alloy. This in.luded an.in.rease of the ultimate ten.ile stren.th reachin. 308 MPa for an.ealed material an. 264 MPa for the as-cast on. in.con.un.tion.with a twofold in.rease in.ductility. A further importan. result of the MAD processin. was a reduction.of the rate of electrochemical corrosion. as in.icated by a sign.fican. decrease in.the corrosion.curren. den.ity in.both microstructural states of the alloy studied.

关键词： Metals an. alloys Multiaxial deformation Microstructure Recrystallization Mechan.cal properties Corrosion