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From “Grain Refiners” To “Aluminium Based In-Situ Composites” In Ternary Al-Ti-B System

Published: 2014
Authors: M. Chakraborty

There has been a considerable interest in the ternary Al-Ti-B system amongst the aluminium casting fraternity.

Material Resources / Publications

Processing And Properties Of Aluminium Based Composites Reinforced With In-Situ Tib2 Particles

Published: 2014
Authors: A. Mandal, S. Deepak Kumar, M. Chakraborty

The present work highlights the synthesis, processing and characterization of Aluminium based in-situ metal matrix composites (MMCs) reinforced with titanium diboride (TiB2) particles created by an exothermic reaction of K2TiF6 and KBF4 with molten aluminium.

Material Resources / Publications

Horizontal Single Belt Casting Of Aa6111 Auto-Alloy, Including Predictions And Measurements Of Interfacial Heat Transfer And Solidification During The First Critical Moments Of Melt-Substrate Contact

Published: 2014
Authors: Roderick I L Guthrie, Mihaiela Isac

Near Net Shape Casting (NNSC) processes currently include CASTRIP's Twin Roll Casting, and Hazelett's Twin Belt Casting. A more recent NNSC process is the HSBC (Horizontal, Single Belt Casting).

Material Resources / Publications

Influence Of Sn-Solubility On Suppression Of Natural Aging In An Aa6061 Aluminum Alloy

Published: 2014
Authors: M. Werinos, H. Antrekowitsch, W. Fragner, T. Ebner, P.J. Uggowitzer, S. Pogatscher

It has been shown that minute additions of Sn to Al-Mg-Si alloys suppress and/or reduce the negative effect of natural pre-aging on artificial aging. This is of great importance for their application in precipitation hardened lightweight structures, particularly in automotive components. Sn not only retards the hardness increase during natural aging, it also enhances artificial aging kinetics and maximum hardness.

Material Resources / Publications

Carbon Dioxide Capture Properties Of One-Dimensional Nanoporous Octahedral Molecular Sieve

Published: 2014
Authors: Izaak Williamson, Eric B. Nelson, Lan Li

The efficient separation and storage of CO2 from electric power plant flue gases can reduce the amount of CO2 released into the atmosphere and mitigate globabl warming.

Material Resources / Publications

Computer Aided Design Of Innovative Incremental Forming Process

Published: 2014
Authors: Joanna Szyndler, Konrad Perzynski, Franciszek Grosman, Lukasz Madej

The main aim of the present work is a detailed analysis of the material flow during the innovative incremental forging process. Description of the investigated incremental forging technology as well as details of the developed numerical models are presented with in the paper.

Material Resources / Publications

Multiscale Modeling Of Static Recrystallization During Multi-Pass Hot Rolling

Published: 2014
Authors: K. Muszka, M. Sitko, K. Perzynski, L. Madej, E.J. Palmiere

Hot rolling is one of the most commonly used metal forming operation to manufacture long and flat products. In multi-pass rolling proper assessment of the interactions between strain state and microstructure evolution plays a crucial role. Thus, the main subject of the present work is to use multiscale numerical model of hot rolling combining Finite Element (FE) and Cellular Automata (CA) approaches to model multi-pass rolling process.

Material Resources / Publications

Discrete Dislocation Dynamics Simulations Of Metal Crystals In A Cylinder

Published: 2014
Authors: Maosheng Li , Chan Gao , Jianing Xu

Mechanical properties of material are closely related to the motion of dislocations, and predicting the interactions and resulting collective motion of dislocations is a major task in understanding and modeling plastically deforming materials. A discrete dislocation dynamics model is used to describe the orientation substructure with in the microstructure.

Material Resources / Publications

Multi-Scale Modeling And Characterization Of Random Microstructures With Gaussian Correlations

Published: 2014
Authors: Ankit Saharan, Sohan Kale, and Martin Ostoja-Starzewski

Scale dependent homogenization is used to estimate the effective properties of heterogeneous materials with Gaussian correlated microstructures. Separation of scales (Micro, Meso, Macro) in these microstructures leads to the problem of determination of Representative Volume Element (RVE) that corresponds to the effective properties of materials.

Material Resources / Publications

Numerical Simulation Of Wave Propagation And Dispersion In Sensing Block And Hopkinson Bar Test

Published: 2014
Authors: Khlif. M , Bradai. Ch , Masmoudi. N

The mixed system composed by a Sensing block system and a Hopkinson bar is a new method to investigate mechanical properties of materials under high strain rates. In practice, however, wave dispersion distorts pulse shape and may limit the accuracy of results. Using finite element simulation, it is shown in this work that a half sinusoidal pulse decreases wave dispersion. Moreover, it is also demonstrated that the higher the rise time the lower the wave dispersion.

Material Resources / Publications

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