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Recently Published Articles

  1. Enhancing Mechanical Properties of TiZrAlV by Engineering a Multi-Modal-Laminated Structure

    Yindong Shi, Lina Wang, Ming Li, Guosheng Zhang, Defeng Guo and Xiangyi Zhang

    Article first published online: 17 AUG 2015 | DOI: 10.1002/adem.201500194

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    High strength and high ductility is the prerequisite for structural materials for their applications. An excellent combination of tensile properties, i.e., an ultimate tensile strength of ≈1 630 MPa and an elongation to failure ≈6.6%, has been achieved in a new β-metastable TiZrAlV alloy. This is attributed to the formation of a refined β microstructure with grain size of ≈10 µm and a multi-modal-laminated structure that consists of large microscale primary αp grains (2 µm and 9.5 vol%), submicroscale (300 nm and 21 vol%), and nanoscale (50 nm and 65 vol%) α precipitates.

  2. High-Strain-Rate Superplasticity in Mg–Y–Nd Alloy Prepared by Submerged Friction Stir Processing

    Genghua Cao, Datong Zhang, Fang Chai, Wen Zhang and Cheng Qiu

    Article first published online: 6 AUG 2015 | DOI: 10.1002/adem.201500221

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    A fine-grained Mg–Y–Nd alloy is prepared by submerged friction stir processing. Due to its fine microstructure and high thermal stability, which are beneficial to grain boundary sliding during superplastic deformation, excellent high-strain-rate superplasticiy is achieved in this material, with an elongation of 549% at 1 × 10−1 s−1 and 758 K.

  3. Sintering Behavior of Lanthana-Bearing Nanostructured Ferritic Steel Consolidated via Spark Plasma Sintering

    Somayeh Pasebani, Indrajit Charit, Darryl P. Butt, James I. Cole, Yaqiao Wu and Jatuporn Burns

    Article first published online: 3 AUG 2015 | DOI: 10.1002/adem.201500294

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    The work reported herein investigates the effect of milling time on the spark plasma sintering kinetics and microstructural evolution of 14LMT alloy, a nanostructured ferritic steel, containing lanthanum instead of yttrium. The predominance of grain boundary diffusion during sintering is noted. Microstructure is characterized by SEM/EBSD and TEM, and mechanical property by Vickers microhardness technique.

  4. The Organic Power Transistor: Roll-to-Roll Manufacture, Thermal Behavior, and Power Handling When Driving Printed Electronics

    Francesco Pastorelli, Thomas M. Schmidt, Markus Hösel, Roar R. Søndergaard, Mikkel Jørgensen and Frederik C. Krebs

    Article first published online: 3 AUG 2015 | DOI: 10.1002/adem.201500348

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    The footprint of organic electronic technologies is important when united in complex circuitry. We describe the area requirements for roll-to-roll processed electrochromics, solar cells, and printed organic power transistors in joint operation of a large area window shading application and find that organic power transistors and OPVs can drive electrochromics while taking up very little area.

  5. Comparison of TiAl-Based Intermetallics Joints Brazed with Amorphous and Crystalline Ti–Zr–Cu–Ni–Co–Mo Fillers

    Li Li, Xiaoqiang Li, Zhifeng Li, Ke Hu, Shengguan Qu and Chao Yang

    Article first published online: 31 JUL 2015 | DOI: 10.1002/adem.201500190

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    The room temperature shear strength of the joint brazed with the amorphous filler is always much higher than that with the crystalline filler, and the maximum joint shear strength is 202 MPa at a brazing temperature of 1 000 °C. The differences in performance of the joints are related to the microstructure characteristics of the brazing seams.