Composition dependence of ductility in boron-doped,nickel-base L12 alloys |
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| Affiliation: | 1. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;;2. Department of Materials Engineering, Baotou Vocational & Technical College, Baotou 014030, China;;3. The fifth Branch Company, Inner Mongolia First Machinery Group Corporation Limited, Baotou 014032, China;1. Arts et Métiers ParisTech, CNRS PIMM, 75013 Paris, France;2. Montpellier University, CNRS LMGC, 34095 Montpellier, France;3. Paris Ouest Nanterre University, LEME EA 4416, 92410 Ville d’Avray, France;4. Erlangen-Nürnberg University, Germany;1. Light Alloy Research Institute, Central South University, Changsha 410083, China;2. Department of Materials Engineering, Hunan University of Humanities, Science and Technology, Loudi 417000, China;3. School of Materials Science and Engineering, Central South University, Changsha 410083, China;1. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China;2. Guangdong University of Technology, Guangzhou, 510006, China;3. College of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin, 150001, China;1. Université Lille 1 sciences et technologies, UMET – UMR CNRS 8207/ENSCL/Université de Lille, team Métallurgie Physique et Génie des Matériaux, Bâtiment C6, 59655 Villeneuve d’Ascq, France;2. Valeo Engine Electrical Systems, 2 rue André Boulle, 94046 Créteil, France;3. Max-Planck-Institut für Eisenforschung, Abteilung Mikrostrukturphysik und Umformtechnik, Max-Planck-Strasse 1, 40237 Düsseldorf, Germany |
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| Abstract: | The effect of boron doping on the ductility and fracture morphology of the Ni3X (X = Al, Ga, Si, Ge) system has been examined. For the boron-doped binary alloys, the ductility varies as Ni3Al ~ Ni3Ga Ni3SiNi3Ge. The boron-doped ternary alloys follow the same trend of decreasing ductility with increasing Si and Ge content. The data is consistent with both the valency/size effect and electronegativity models for grain boundary cohesive strength. |
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