Metals 2019, 9(2), 149; https://doi.org/10.3390/met9020149
Measurement and Evaluation of Calorimetric Descriptors for the Suitability for Evolutionary High-Throughput Material Development
1
Leibniz Institute for Materials Engineering IWT, University of Bremen, Badgasteiner Str. 3, 28359 Bremen, Germany
2
Department of mathematics and computer science, University of Bremen, Bibliothekstraße 5, 28359 Bremen, Germany
*
Author to whom correspondence should be addressed.
Received: 3 December 2018 / Revised: 18 January 2019 / Accepted: 25 January 2019 / Published: 29 January 2019
Abstract
A novel method for evolutionary material development by using high-throughput processing is established. For the purpose of this high-throughput approach, spherical micro samples are used, which have to be characterized, up-scaled to macro level and valued. For the evaluation of the microstructural state of the micro samples and the associated micro-properties, fast characterization methods based on physical testing methods such as calorimetry and universal microhardness measurements are developed. Those measurements result in so-called descriptors. The increase in throughput during calorimetric characterization using differential scanning calorimetry is achieved by accelerating the heating rate. Consequently, descriptors are basically measured in a non-equilibrium state. The maximum heating rate is limited by the possibility to infer the microstructural state from the calorimetric results. The substantial quality of the measured descriptors for micro samples has to be quantified and analyzed depending on the heating rate. In this work, the first results of the measurements of calorimetric descriptors with increased heating rates for 100Cr6 will be presented and discussed. The results of low and high heating rates will be compared and analyzed using additional microhardness measurements. Furthermore, the validation of the method regarding the suitability for the evolutionary material development includes up-scaling to macro level and therefore different sample masses will be investigated using micro and macro samples during calorimetry. View Full-Text
Figure 1
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
Share & Cite This Article
MDPI and ACS Style
Toenjes, A.; Sonnenberg, H.; Plump, C.; Drechsler, R.; von Hehl, A. Measurement and Evaluation of Calorimetric Descriptors for the Suitability for Evolutionary High-Throughput Material Development. Metals 2019, 9, 149.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.