naa a22 4500 510770665 CHVBK 20180411083212.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.1007/s11837-013-0776-z doi (NATIONALLICENCE)springer-10.1007/s11837-013-0776-z Aluminum Alloying Effects on Lattice Types, Microstructures, and Mechanical Behavior of High-Entropy Alloys Systems [Elektronische Daten] [Zhi Tang, Michael Gao, Haoyan Diao, Tengfei Yang, Junpeng Liu, Tingting Zuo, Yong Zhang, Zhaoping Lu, Yongqiang Cheng, Yanwen Zhang, Karin Dahmen, Peter Liaw, Takeshi Egami] The crystal lattice type is one of the dominant factors for controlling the mechanical behavior of high-entropy alloys (HEAs). For example, the yield strength at room temperature varies from 300MPa for the face-centered-cubic (fcc) structured alloys, such as the CoCrCuFeNiTi x system, to about 3,000MPa for the body-centered-cubic (bcc) structured alloys, such as the AlCoCrFeNiTi x system. The values of Vickers hardness range from 100 to 900, depending on lattice types and microstructures. As in conventional alloys with one or two principal elements, the addition of minor alloying elements to HEAs can further alter their mechanical properties, such as strength, plasticity, hardness, etc. Excessive alloying may even result in the change of lattice types of HEAs. In this report, we first review alloying effects on lattice types and properties of HEAs in five Al-containing HEA systems: Al x CoCrCuFeNi, Al x CoCrFeNi, Al x CrFe1.5MnNi0.5, Al x CoCrFeNiTi, and Al x CrCuFeNi2. It is found that Al acts as a strong bcc stabilizer, and its addition enhances the strength of the alloy at the cost of reduced ductility. The origins of such effects are then qualitatively discussed from the viewpoints of lattice-strain energies and electronic bonds. Quantification of the interaction between Al and 3d transition metals in fcc, bcc, and intermetallic compounds is illustrated in the thermodynamic modeling using the CALculation of PHAse Diagram method. The Minerals, Metals & Materials Society, 2013 Tang Zhi Department of Materials Science and Engineering, The University of Tennessee, 37996, Knoxville, TN, USA aut Gao Michael National Energy Technology Laboratory, 97321, Albany, OR, USA aut Diao Haoyan Department of Materials Science and Engineering, The University of Tennessee, 37996, Knoxville, TN, USA aut Yang Tengfei Department of Materials Science and Engineering, The University of Tennessee, 37996, Knoxville, TN, USA aut Liu Junpeng State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, 100083, Beijing, People's Republic of China aut Zuo Tingting State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, 100083, Beijing, People's Republic of China aut Zhang Yong State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, 100083, Beijing, People's Republic of China aut Lu Zhaoping State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, 100083, Beijing, People's Republic of China aut Cheng Yongqiang Chemical and Engineering Materials Division, Oak Ridge National Laboratory, 37831, Oak Ridge, TN, USA aut Zhang Yanwen Department of Materials Science and Engineering, The University of Tennessee, 37996, Knoxville, TN, USA aut Dahmen Karin Department of Physics, University of Illinois at Urbana-Champaign, 61801, Urbana, IL, USA aut Liaw Peter Department of Materials Science and Engineering, The University of Tennessee, 37996, Knoxville, TN, USA aut Egami Takeshi Department of Materials Science and Engineering, The University of Tennessee, 37996, Knoxville, TN, USA aut JOM Springer US; http://www.springer-ny.com 65/12(2013-12-01), 1848-1858 1047-4838 65:12<1848 2013 65 11837 https://doi.org/10.1007/s11837-013-0776-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11837-013-0776-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tang Zhi Department of Materials Science and Engineering, The University of Tennessee, 37996, Knoxville, TN, USA aut NATIONALLICENCE 700 1- Gao Michael National Energy Technology Laboratory, 97321, Albany, OR, USA aut NATIONALLICENCE 700 1- Diao Haoyan Department of Materials Science and Engineering, The University of Tennessee, 37996, Knoxville, TN, USA aut NATIONALLICENCE 700 1- Yang Tengfei Department of Materials Science and Engineering, The University of Tennessee, 37996, Knoxville, TN, USA aut NATIONALLICENCE 700 1- Liu Junpeng State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, 100083, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Zuo Tingting State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, 100083, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Zhang Yong State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, 100083, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Lu Zhaoping State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, 100083, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Cheng Yongqiang Chemical and Engineering Materials Division, Oak Ridge National Laboratory, 37831, Oak Ridge, TN, USA aut NATIONALLICENCE 700 1- Zhang Yanwen Department of Materials Science and Engineering, The University of Tennessee, 37996, Knoxville, TN, USA aut NATIONALLICENCE 700 1- Dahmen Karin Department of Physics, University of Illinois at Urbana-Champaign, 61801, Urbana, IL, USA aut NATIONALLICENCE 700 1- Liaw Peter Department of Materials Science and Engineering, The University of Tennessee, 37996, Knoxville, TN, USA aut NATIONALLICENCE 700 1- Egami Takeshi Department of Materials Science and Engineering, The University of Tennessee, 37996, Knoxville, TN, USA aut NATIONALLICENCE 773 0- JOM Springer US; http://www.springer-ny.com 65/12(2013-12-01), 1848-1858 1047-4838 65:12<1848 2013 65 11837 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer