--- _id: '24589' abstract: - lang: eng text: "Additive manufacturing, e.g. by laser powder bed fusion (LPBF), is very attractive for lightweight constructions, as complex and stress-optimised structures integrating multiple functions can be produced within one process. Unfortunately, high strength AlZnMgCu alloys tend to hot cracking during LPBF\r\nand thus have not so far been applicable. In this work the melting and solidification behaviour of\r\nAlZnMgCu alloy powder variants with particle surface inoculation was analysed by Differential Fast\r\nScanning Calorimetry. The aim is to establish a method that makes it possible to assess powder modifications in terms of their suitability for LPBF on a laboratory scale requiring only small amounts of powder.\r\nTherefore, solidification undercooling is evaluated at cooling rates relevant for LPBF. A method for the\r\ntemperature correction and normalisation of the DFSC results is proposed. Two ways of powder modification were tested for the powder particles surface inoculation by titanium carbide (TiC) nanoparticles:\r\nvia wet-chemical deposition and via mechanical mixing.\r\nA low undercooling from DFSC correlates with a low number of cracks of LPBF-manufactured cubes. It\r\nappears that a reduced undercooling combined with reduced solidification onset scatter indicates the\r\npossibility of crack-free LPBF of alloys that otherwise tend to hot cracking." article_number: '109677' article_type: original author: - first_name: Evgeny full_name: Zhuravlev, Evgeny last_name: Zhuravlev - first_name: Benjamin full_name: Milkereit, Benjamin last_name: Milkereit - first_name: Bin full_name: Yang, Bin last_name: Yang - first_name: Steffen full_name: Heiland, Steffen last_name: Heiland - first_name: Pascal full_name: Vieth, Pascal last_name: Vieth - first_name: Markus full_name: Voigt, Markus last_name: Voigt - first_name: Mirko full_name: Schaper, Mirko last_name: Schaper - first_name: Guido full_name: Grundmeier, Guido last_name: Grundmeier - first_name: Christoph full_name: Schick, Christoph last_name: Schick - first_name: Olaf full_name: Kessler, Olaf last_name: Kessler citation: ama: Zhuravlev E, Milkereit B, Yang B, et al. Assessment of AlZnMgCu alloy powder modification for crack-free laser powder bed fusion by differential fast scanning calorimetry. Materials & Design. Published online 2021. doi:10.1016/j.matdes.2021.109677 apa: Zhuravlev, E., Milkereit, B., Yang, B., Heiland, S., Vieth, P., Voigt, M., Schaper, M., Grundmeier, G., Schick, C., & Kessler, O. (2021). Assessment of AlZnMgCu alloy powder modification for crack-free laser powder bed fusion by differential fast scanning calorimetry. Materials & Design, Article 109677. https://doi.org/10.1016/j.matdes.2021.109677 bibtex: '@article{Zhuravlev_Milkereit_Yang_Heiland_Vieth_Voigt_Schaper_Grundmeier_Schick_Kessler_2021, title={Assessment of AlZnMgCu alloy powder modification for crack-free laser powder bed fusion by differential fast scanning calorimetry}, DOI={10.1016/j.matdes.2021.109677}, number={109677}, journal={Materials & Design}, author={Zhuravlev, Evgeny and Milkereit, Benjamin and Yang, Bin and Heiland, Steffen and Vieth, Pascal and Voigt, Markus and Schaper, Mirko and Grundmeier, Guido and Schick, Christoph and Kessler, Olaf}, year={2021} }' chicago: Zhuravlev, Evgeny, Benjamin Milkereit, Bin Yang, Steffen Heiland, Pascal Vieth, Markus Voigt, Mirko Schaper, Guido Grundmeier, Christoph Schick, and Olaf Kessler. “Assessment of AlZnMgCu Alloy Powder Modification for Crack-Free Laser Powder Bed Fusion by Differential Fast Scanning Calorimetry.” Materials & Design, 2021. https://doi.org/10.1016/j.matdes.2021.109677. ieee: 'E. Zhuravlev et al., “Assessment of AlZnMgCu alloy powder modification for crack-free laser powder bed fusion by differential fast scanning calorimetry,” Materials & Design, Art. no. 109677, 2021, doi: 10.1016/j.matdes.2021.109677.' mla: Zhuravlev, Evgeny, et al. “Assessment of AlZnMgCu Alloy Powder Modification for Crack-Free Laser Powder Bed Fusion by Differential Fast Scanning Calorimetry.” Materials & Design, 109677, 2021, doi:10.1016/j.matdes.2021.109677. short: E. Zhuravlev, B. Milkereit, B. Yang, S. Heiland, P. Vieth, M. Voigt, M. Schaper, G. Grundmeier, C. Schick, O. Kessler, Materials & Design (2021). date_created: 2021-09-17T08:38:58Z date_updated: 2022-01-06T06:56:29Z department: - _id: '9' - _id: '158' - _id: '219' doi: 10.1016/j.matdes.2021.109677 keyword: - Aluminium alloy 7075 - Differential fast scanning calorimetry - Solidification - Undercooling - Additive manufacturing language: - iso: eng publication: Materials & Design publication_identifier: issn: - 0264-1275 publication_status: published status: public title: Assessment of AlZnMgCu alloy powder modification for crack-free laser powder bed fusion by differential fast scanning calorimetry type: journal_article user_id: '77250' year: '2021' ...