List of Speakers SYMPOSIUM: Light Metals for Transportation

hosted byOctober 27-31, 2013, Montreal, QuebecList of SpeakersRevised: Monday, April 22, 2013SYMPOSIUM:Light Metals for TransportationMicrostructural analysis of samples post-forming showed a dimpled fracture surface with dimple size increasing withtemperature. Voids close to the surface were shown to initiate at Fe-containing particles.The Effects of Mg, Mo and Cr on the Microstructure and Elevated Temperature Mechanical Properties of an Al-Si-Cu-Mg Engine AlloyID: 71759Type: StudentSpeaker: Amir Rezaei Farkoosh, McGill University, CanadaAuthor(s): A. Rezaei Farkoosh, X. Chen, M. PekguleryuzHigh temperature Al-Si casting alloys are on the way to becoming an appropriate replacement for cast iron in Dieselengines. As a result of improvements in engine performance and demands for higher pressures and temperatures, theexisting aluminum alloys have reached strength limits. This has triggered efforts in alloy development to design Al alloyswith enhanced elevated-temperature performance. In the present work, the influence of Mg, Mo and Cr modifications onthe solidification, precipitation and elevated temperature mechanical properties of a Sr-modified Al7Si0.5Cu0.3Mg (inwt.%) alloy has been investigated. It is observed that the strength increases with increased Mg alloying. The presence ofMo leads to nano-scale dispersoid formation which results in improved high-temperature strength, creep resistance andaging response.Thermodynamic Database for Copper Production and TreatmentID: 71690Type: StudentPosterSpeaker: Denis Shishin, Ecole Polytechnique of Montreal, CanadaAuthor(s): D. ShishinModern cars, trucks and trains are “computers on wheels”. No electronics is possible without copper, amazing metal withunique properties. It is also considered a perspective additive for light alloys. This presentation focuses on the creation ofthe large thermodynamic database for copper production and treatment. This database, created for use by FactSagesoftware, covers the Al-Ca-Cu-Fe-Mg-Ni-O-S-Si chemical system and the following phases: liquid metal, slag, oxysulfidematte, spinel, numerous metallic, oxide and sulfide solid solutions.The Calphad-style optimization procedure is usedduring the database development. All available thermodynamic and phase diagram data are evaluated simultaneously inorder to obtain one set of model equations for the Gibbs energies of all phases as functions of temperature andcomposition. From these equations, all of the thermodynamic properties and the phase diagrams can be back-calculated.In this way, all the data are rendered self-consistent and consistent with thermodynamic principles.Thermodynamic Modeling and Optimization of the Al-Mn-Zn SystemID: 73861Type: PosterSpeaker: Chander Shekhar, Concordia University, CanadaAuthor(s): C. Shekhar, M. MedrajThe paper presents accurate and consistent thermodynamic description of Al-Mn-Zn ternary system and reportedconstituent ternary phases. Three intermetallic ternary compounds and increased solubility limits of the component binarycompounds were considered in the modeling. Among the ternary intermetallic compounds, t3 having complex solubilityrange has been modeled using compound energy formulism whereas t1 and t2 have been considered as thestoichiometric phases. Along the binaries, models based on compound energy formulism have been developed forconstituent binary system to accommodate recently experimentally obtained solubility ranges. Liquid phase in the systemhas been modeled using Modified Quasi-chemical Model. The results from the experiments were compared with thePage 15 of 17