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1.489 Aktuelle Fachpublikationen in Advanced Engineering Materials

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Multiscale Modeling of Microstructure‐Property Relationships of Polycrystalline Metals during Thermo‐Mechanical Deformation

19.01.2018 | Marko Knezevic, Irene J. Beyerlein, Advanced Engineering Materials, 2018

The plastic deformation of polycrystalline metals is primarily carried by the crystallographic glide of dislocations and growth of deformation twins. According to the thermodynamic theory of slip, dislocation motion is thermally activated, while deformation twinning is an athermal process. ...

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Improvement of the Electrical Conductivity between Electrode and Sheet in Spot Welding Process by Direct Laser Interference Patterning

19.01.2018 | Stefan Heilmann, Christoph Zwahr, Alexander Knape, Jörg Zschetzsche, Andrés Fabián Lasagni, Uwe Füssel, Advanced Engineering Materials, 2018

The effort of automotive industry is the increasingly use of aluminum alloys to reduce the weight of the car. Regarding the lifetime of electrodes and the process reliability resistance, spot welding is not applied for joining of aluminum sheets. Instead, more expensive processes must be used, ...

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Polysilazane‐Type Coatings on Mo–Si–B Alloys: A Thermodynamic Assessment of the Phase Composition

16.01.2018 | Iryna Smokovych, Michael Scheffler, Advanced Engineering Materials, 2018

Thermodynamic analysis is conducted to identify the most probable phase composition of a polysilazane‐type coating system on Mo–Mo3Si(A15)–Mo5SiB2(T2) alloy. The Free Gibbs Energy of chemical reactions between these constituents and resulting phases are calculated. Silicon nitrides, silicon ...

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Latent Heat Thermal Energy Storage Systems with Solid–Liquid Phase Change Materials: A Review

15.01.2018 | Nan Zhang, Yanping Yuan, Xiaoling Cao, Yanxia Du, Zhaoli Zhang, Yewei Gui, Advanced Engineering Materials, 2018

This paper provides a review of the solid–liquid phase change materials (PCMs) for latent heat thermal energy storage (LHTES). The commonly used solid–liquid PCMs and their thermal properties are summarized here firstly. Two major drawbacks that seriously limit the application of PCMs in an ...

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Porous Titanium Implants: A Review

15.01.2018 | Krzysztof Pałka, Rafał Pokrowiecki, Advanced Engineering Materials, 2018

Titanium and its alloys are commonly used in almost all disciplines of medicine because of their sufficient biocompatibility and meeting of mechanical requirements. However, dense metallic biomaterials represent only an interfacial connection with host tissue, may develop stress shielding which ...

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Heterogeneous Strain Distribution and Saturation of Geometrically Necessary Dislocations in a Ferritic–Pearlitic Steel during Lubricated Sliding

15.01.2018 | Mathias Linz, Manel Rodríguez Ripoll, Christoph Pauly, Johannes Bernardi, Andreas Steiger‐Thirsfeld, Friedrich Frane ..., Advanced Engineering Materials, 2018

The microstructural evolution of ferritic–pearlitic steel is studied during unidirectional sliding under boundary lubrication using a ball‐on‐flat configuration. Dislocation activity as a function of distance to surface is determined using orientation gradients by electron backscatter ...

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Oxidation Behavior between 700 and 1300 °C of Refractory TiZrNbHfTa High‐Entropy Alloys Containing Aluminum

15.01.2018 | Chia‐Hsiu Chang, Michael S. Titus, Jien‐Wei Yeh, Advanced Engineering Materials, 2018

Refractory alloys without Cr, Al, and Si additions exhibit very poor high temperature oxidation resistance and thus significantly limit their applications. With an aim to improve the poor oxidation resistance of strong and ductile refractory TiZrNbHfTa high‐entropy alloys (HEAs), this study ...

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Grain Size Depending Dwell‐Fatigue Crack Growth in Inconel 718

15.01.2018 | Jonas Saarimäki, Mattias Lundberg, Johan J. Moverare, Advanced Engineering Materials, 2018

Inconel 718 is a commonly used superalloy for turbine discs in the gas turbine industry. Turbine discs are normally subjected to dwell‐fatigue as a result of long constant load cycles. Dwell‐times have been shown to give rise to increased crack propagation rates in superalloys at elevated ...

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On the Mechanical Properties of Aluminum Matrix Syntactic Foams

11.01.2018 | Imre Norbert Orbulov, Attila Szlancsik, Advanced Engineering Materials, 2018

Metal matrix syntactic foams (MMSFs, often referred as composite metal foams (CMFs)) are lightweight materials with high specific strength. MMSFs are on the borderline between metal matrix composites and metal foams. On one hand MMSFs are composites, because they are filled by hollow particles ...

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Solid State Porous Metal Production: A Review of the Capabilities, Characteristics, and Challenges

04.01.2018 | Mark A. Atwater, Laura N. Guevara, Kris A. Darling, Mark A. Tschopp, Advanced Engineering Materials, 2018

Porous metals have been under development for nearly a century, but commercial adoption remains limited. This development has followed two primary routes: liquid state or solid state processing. Liquid state foaming introduces porosity to a liquid or semi‐solid metal, and solid state foaming ...

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