Effect of rapid solidification on giant magnetostriction in ferromagnetic shape memory iron-based alloys |
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| Affiliation: | 1. Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo, Hirosaki 036-8561, Japan;2. Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Sendai 098-8577, Japan;3. Graduate School of Engineering, Tohoku University, 01 Aoba Aramaki Aoba, Sendai 980-8579, Japan;4. Department of Materials and Nuclear Engineering, University of Maryland, College Park, MD 20742-2115, USA;1. AVL List GmbH, Hans-List-Platz 1, 8010 Graz, Austria;2. Graz University of Technology, Inffeldgasse 16, 8010 Graz, Austria;1. School of Business, Nanjing Normal University, Nanjing, China;2. Department of Engineering Management, School of Civil Engineering, Wuhan University, Wuhan 430072, China;3. Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia;4. Machine Intelligence Institute, Iona College, New Rochelle, NY, United States;5. Faculty of Civil Engineering, Slovak University of Technology, Radlinského 11, Sk-810 05 Bratislava, Slovakia;6. Department of Algebra and Geometry, Faculty of Science, Palacký University, Olomouc, 17. listopadu 12, 77 146 Olomouc, Czech Republic;7. Faculty of Civil Engineering, Slovak University of Technology, Radlinského 11, Sk-810 05 Bratislava, Slovakia;8. Department of Statistics, Computer Science and Mathematics, Public University of Navarre, Campus Arrosadia sn, Pamplona, Spain;9. Department of Computer Science, University of Jaén, 23071 Jaén, Spain;1. Department of Biology, University of Texas at San Antonio, TX 78249, USA;2. Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX, USA;3. Neurology Section, VA North Texas Health Care System, Medical Service, Dallas, TX, USA;1. State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China;2. School of Pharmacy, Macau University of Science and Technology, Macau, China;3. Department of Ophthalmology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China;1. College of Mechanical and Electrical Engineering, China Jiliang University, Hangzhou, Zhejiang 310018, PR China;2. Key Laboratory of Intelligent Manufacturing Quality Big Data Tracing and Analysis of Zhejiang Province, China Jiliang University, 310018, PR China;1. College of Food Science, Southwest University, Chongqing, 400715, PR China;2. Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Kowloon, Hong Kong;3. State Key Laboratory of Chemical Biology and Drug Discovery and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong |
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| Abstract: | Ferromagnetic shape memory Fe–29.6 at.% Pd alloy ribbons prepared by the rapid solidification, melt-spinning method, showed a giant magnetostriction of 830 microstrain when an external magnetic field of 7 kOe was applied nearly normal to the ribbon surface at room temperature. This ribbon's magnetostriction was several times as large as conventional polycrystalline bulk's one before rapid solidification. The magnetostriction in the rolling direction depended strongly on a direction of applied magnetic field. We considered that this phenomenon is caused by a rearrangement of activated martensite twin variants just below the austenite phase transformation temperature. We investigated their basic material properties, i.e. the dependencies of magnetostriction on temperature as well as on magnetic angular orientation to the surface, magnetic properties, crystal structure, surface texture morphology and shape memory effect of Fe–29.6 at.% Pd ribbon samples by comparing with conventional bulk sample. It can be concluded that the remarkable anisotropy of giant magnetostriction of ribbon sample is caused by the unique uniaxial-oriented fine grain structure formed by the melt-spinning method. In addition, we confirmed the possibility of rapidly solidified Fe–Pt ribbon as a new kind of iron-based ferromagnetic shape memory alloys for magnetostrictive material. |
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