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Winiarski B, Gheysen J, Pyka G, Hannard F, Arseenko M, Villanova J, Brinek A, Chirazi A, Jiang L, Simar A. Correlative Microscopy Discovers Self-Healing of AM-Build Al-Mg Alloy. Microsc Microanal 2023; 29:1981-1982. [PMID: 37612913 DOI: 10.1093/micmic/ozad067.1026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- B Winiarski
- Thermo Fisher Scientific, Brno, Czech Republic
| | - J Gheysen
- Université Catholique de Louvain, Louvain-la-Neuve, Belgique
| | - G Pyka
- Université Catholique de Louvain, Louvain-la-Neuve, Belgique
| | - F Hannard
- Université Catholique de Louvain, Louvain-la-Neuve, Belgique
| | - M Arseenko
- Université Catholique de Louvain, Louvain-la-Neuve, Belgique
| | - J Villanova
- ESRF - The European Synchrotron Radiation Facility, Grenoble, France
| | - A Brinek
- CEITEC - Central European Institute of Technology, Brno, Czech Republic
| | - A Chirazi
- Thermo Fisher Scientific, Bordeaux, France
| | - L Jiang
- Thermo Fisher Scientific, Hillsboro, Oregon, USA
| | - A Simar
- Université Catholique de Louvain, Louvain-la-Neuve, Belgique
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Han S, Lezaack MB, Pyka G, Netto N, Simar A, Wahab MA, Hannard F. On the Competition between Intergranular and Transgranular Failure within 7xxx Al Alloys with Tailored Microstructures. Materials (Basel) 2023; 16:ma16103770. [PMID: 37241397 DOI: 10.3390/ma16103770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/25/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023]
Abstract
7xxx aluminium series reach exceptional strength compared to other industrial aluminium alloys. However, 7xxx aluminium series usually exhibit Precipitate-Free Zones (PFZs) along grain boundaries, which favour intergranular fracture and low ductility. In this study, the competition between intergranular and transgranular fracture is experimentally investigated in the 7075 Al alloy. This is of critical importance since it directly affects the formability and crashworthiness of thin Al sheets. Using Friction Stir Processing (FSP), microstructures with similar hardening precipitates and PFZs, but with very different grain structures and intermetallic (IM) particle size distribution, were generated and studied. Experimental results showed that the effect of microstructure on the failure mode was significantly different for tensile ductility compared to bending formability. While the tensile ductility was significantly improved for the microstructure with equiaxed grains and smaller IM particles (compared to elongated grains and larger particles), the opposite trend was observed in terms of formability.
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Affiliation(s)
- Sutao Han
- Institute of Mechanics, Materials and Civil Engineering, UCLouvain, 1348 Louvain-la-Neuve, Belgium
- Soete Laboratory, Department of Electrical Energy, Metals, Mechanical Constructions and Systems, Faculty of Engineering and Architecture, Ghent University, B-9052 Gent, Belgium
| | - Matthieu B Lezaack
- Institute of Mechanics, Materials and Civil Engineering, UCLouvain, 1348 Louvain-la-Neuve, Belgium
| | - Grzegorz Pyka
- Institute of Mechanics, Materials and Civil Engineering, UCLouvain, 1348 Louvain-la-Neuve, Belgium
| | - Nelson Netto
- Institute of Mechanics, Materials and Civil Engineering, UCLouvain, 1348 Louvain-la-Neuve, Belgium
| | - Aude Simar
- Institute of Mechanics, Materials and Civil Engineering, UCLouvain, 1348 Louvain-la-Neuve, Belgium
| | - Magd Abdel Wahab
- Soete Laboratory, Department of Electrical Energy, Metals, Mechanical Constructions and Systems, Faculty of Engineering and Architecture, Ghent University, B-9052 Gent, Belgium
| | - Florent Hannard
- Institute of Mechanics, Materials and Civil Engineering, UCLouvain, 1348 Louvain-la-Neuve, Belgium
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