Advanced Engineering Materials

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Recently Published Articles

  1. Quantitative Analyses of MWCNT-Ti Powder Mixtures using Raman Spectroscopy: The Influence of Milling Parameters on Nanostructural Evolution

    Khurram S. Munir, M. Qian, Yuncang Li, Daniel T. Oldfield, Peter Kingshott, De Ming Zhu and Cuie Wen

    Article first published online: 20 MAY 2015 | DOI: 10.1002/adem.201500142

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    Harsh ball milling conditions create structural disorders such as non-sp2 defects in the form of open edges and vacancies in the C–C system of MWCNTs. These open edges (existing along the side walls) and vacancies provide the potential sites for the formation of interfacial reaction products of titanium carbides (TiC).

  2. Ultrafine Grained Structures Resulting from SPD-Induced Phase Transformation in Al–Zn Alloys

    Xavier Sauvage, Maxim Yu. Murashkin, Boris B. Straumal, Elena V. Bobruk and Ruslan Z. Valiev

    Article first published online: 19 MAY 2015 | DOI: 10.1002/adem.201500151

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    We have investigated microstructures resulting from the concomitant mechanisms of grain refinement and phase separation in Al–Zn alloys processed by SPD. We show that a higher processing temperature could give rise to a finer structure because of a competition between the classical discontinuous precipitation of Zn and SPD-induced dynamic precipitation.

  3. Reasons for Volume Contraction after Long-Term Annealing of Waspaloy

    Svenja Kinzel, Johannes Gabel, Rainer Völkl and Uwe Glatzel

    Article first published online: 19 MAY 2015 | DOI: 10.1002/adem.201500159

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    The influence of long-term annealing on sample length and microstructure of Ni-base alloy Waspaloy is investigated. Sample contraction during annealing is caused by microstructural changes. Changes in the volume fraction of γ′ phase and matrix are accompanied by compositional differences which influence the lattice parameter. Another contribution to length change is given by carbide transformation.

  4. Anisotropic Spreading Behavior of PAO Oil on Laser-Patterned Stainless Steel Surfaces

    Andreas Rosenkranz, Simon Fleischmann, Carsten Gachot and Frank Mücklich

    Article first published online: 18 MAY 2015 | DOI: 10.1002/adem.201500115

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    We study the spreading behavior of line-like surface patterns produced by laser interference patterning. This study demonstrates that smaller periodicities and larger aspect ratios lead to an enhanced anisotropic spreading behavior due to a larger number of pinning centers.

  5. Additive Manufacturing and Characterization of René 80 Superalloy Processed Through Scanning Laser Epitaxy for Turbine Engine Hot-Section Component Repair

    Ranadip Acharya, Rohan Bansal, Justin J. Gambone, Max A. Kaplan, Gerhard E. Fuchs, Suman Das and N. G. Rudawski

    Article first published online: 15 MAY 2015 | DOI: 10.1002/adem.201400589

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    Scanning laser epitaxy produces thick, crack-free deposits of René 80, a high γ′ “non-weldable” superalloy, atop investment cast substrates of the same alloy in a single pass. Microstructural refinement and increased hardness are observed in the deposit compared to the as-cast substrate.