Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Hannes Engelhardt"'
Publikováno v:
Practical Metallography. 56:655-668
Cu alloys with relatively small contents of Zn and Al will oxidize heavily during heat treatment in air. Using shielding gas, however, will lead to the evaporation of Zn. A gas-tight coating, which also prevents oxidation, is required when heat treat
Publikováno v:
Journal of Crystal Growth. 506:97-101
We investigate how macrosegregation formation during directional solidification can be purposefully influenced to form sequences of concentration gradients along rod shaped samples. The effects of sudden changes of the solidification velocity on solu
Autor:
Norbert Mehlmer, Thomas Brück, Mirjana Minceva, Simon Roehrer, Max Hirte, Wolfgang Mischko, Hannes Engelhardt
Publikováno v:
Green Chemistry. 20:2637-2650
Synthetic agricultural insecticides are toxic to many species and accumulate in the environment. Therefore, the development of target-specific and biodegradable insecticides and deterrents is in demand. This study describes an improved and sustainabl
Publikováno v:
Calphad. 74:102294
The e-Cu3Sn, η/η′-Cu6Sn5, Al3Ni and Al3Ni2 intermetallics have been produced as pure phases by the mushy zone resolidification in a temperature gradient. Powder XRD and SEM/EDX analysis were used for sample characterization. Heat capacity measure
Autor:
Markus Rettenmayr, Shengya He, Yunbo Zhong, Hannes Engelhardt, Chuanjun Li, Zhongming Ren, Xi Li, Tongjun Zhan, Weidong Xuan
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
Scientific Reports
Scientific Reports
For applying an alternating magnetic field (AMF) in materials processing it is of high significance to understand the physical mechanisms behind the change in diffusivity in the AMF. In this work, the effect of the AMF on interdiffusion in a Ni-Cr al
Publikováno v:
Forschung & Lehre.
Autor:
Holger Hübner, Hannes Engelhardt, Oliver Friedrich, Anja Limmer, Jan Hansmann, Rainer Buchholz, Anette Amtmann, Andreas Wierschem, Daniel Gilbert, Haider Dakhil, Deepika Malhotra
Publikováno v:
Rheologica Acta. 55:527-536
During the last decades, the rheology of cells has been studied almost entirely in single cells. While cell-to-cell variation is typically very large and most studies were carried out in the nonlinear viscoelastic regime, we quantify average linear v
Autor:
Andrea Löffler, Tilmann Hickel, Markus Rettenmayr, Jörg Neugebauer, Ali Zendegani, Joachim Gröbner, Milan Hampl, Rainer Schmid-Fetzer, Fritz Körmann, Hannes Engelhardt
Publikováno v:
Journal of Phase Equilibria and Diffusion. 37:119-126
The quaternary Q phase is an important precipitate phase in the Al-Cu-Mg-Si alloy system and its accurate thermodynamic description is crucial for further tailoring this material class for light-weight structural applications. In order to achieve an
Autor:
Hannes Engelhardt, Markus Rettenmayr
Publikováno v:
Acta Materialia. 95:212-215
An experimental procedure for determining the temperature dependence of diffusion coefficients in a single diffusion heat treatment is introduced. Diffusion in a temperature gradient in samples with initially symmetric “roof-shaped” concentration
Publikováno v:
Acta Materialia. 91:34-40
Resolidification of the mushy zone of multiphase and multicomponent alloys in a temperature gradient is investigated. Experiments of gradient annealing are conducted for a multiphase Cu-40 wt.%Al alloy and an Al-1 wt.%Mg-5 wt.%Si alloy with varying h