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Recently Published Articles

  1. Effect of Crucible Material for Ingot Casting on Detrimental Non-Metallic Inclusions and the Resulting Mechanical Properties of 18CrNiMo7-6 Steel

    Sebastian Henschel, Johannes Gleinig, Tim Lippmann, Steffen Dudczig, Christos G. Aneziris, Horst Biermann, Lutz Krüger and Anja Weidner

    Version of Record online: 24 MAY 2017 | DOI: 10.1002/adem.201700199

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    The effect of crucible material on the distribution of non-metallic inclusions in 18CrNiMo7-6 steel (AISI 4317) is studied. The resulting quasi-static strength and ductility, the dynamic fracture toughness, and the fatigue life time are evaluated. The treatment in a carbon-bonded alumina crucible results in lowest ductility due to a relatively high inclusion content. However, the highest fatigue strength is observed for this treatment.

  2. A Combinatorial Approach for Assessing the Magnetic Properties of High Entropy Alloys: Role of Cr in AlCoxCr1–xFeNi

    Tushar Borkar, Varun Chaudhary, Bharat Gwalani, Deep Choudhuri, Calvin V. Mikler, Vishal Soni, Talukder Alam, Raju V. Ramanujan and Rajarshi Banerjee

    Version of Record online: 24 MAY 2017 | DOI: 10.1002/adem.201700048

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    Laser Engineered Net Shaping (LENS™) process is used for making a compositionally graded magnetic AlCoxCr1–xFeNi HEA (0 ≤ x ≤1). The size scale of phase separation wave, which is affected by the composition, critically affects the magnetic properties like saturation magnetization and coercivity.

  3. Activation Energy and High Temperature Oxidation Behavior of Multi-Principal Element Alloy

    Harpreet Singh Grewal, Ramachandran Murali Sanjiv, Harpreet Singh Arora, Ram Kumar, Aditya Ayyagari, Sundeep Mukherjee and Harpreet Singh

    Version of Record online: 24 MAY 2017 | DOI: 10.1002/adem.201700182

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    Al0.1CoCrFeNi high entropy alloy shows significantly high activation energy and oxidation resistance. High activation energy lowers the mean jump rate of oxygen atom resulting in sluggish diffusion.

  4. Sandwich Structures Consisting of Aluminum Foam Core and Fiber Reinforced Plastic Top Layers

    Drebenstedt Claudia, Susi Rybandt, Drossel Welf-Guntram, Trautmann Maik and Wagner Guntram

    Version of Record online: 23 MAY 2017 | DOI: 10.1002/adem.201700066

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    Aluminum as core and fiber reinforced thermoplastic top layers are combined by compression molding to a new sandwich structure without additional adhesives. Evaluations by tensile tests regarding the bonding depending on the surface pretreatments are conducted. Finally, a demonstrator is realized.

  5. Formation of Corundum, Magnesium Titanate, and Titanium(III) Oxide at the Interface between Rutile and Molten Al or AlSi7Mg0.6 Alloy

    Anton Salomon, Claudia Voigt, Olga Fabrichnaya, Christos G. Aneziris and David Rafaja

    Version of Record online: 22 MAY 2017 | DOI: 10.1002/adem.201700106

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    Interfacial reactions between rutile and molten pure Al or molten AlSi7Mg0.6 alloy are studied. Microstructural analyses are verified by thermodynamic calculations. TiO2 is reduced leading to the formation of corundum with small amounts of intermediate Ti2O3 (pure Al) or intermediate MgTiO3 preceding corundum (AlSi7Mg0.6). Depending on the contact area, the respective oxide formation inhibits the formation of Al3Ti or (Al,Si)3Ti.

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