Physical properties of polycrystalline Ni52Mn26Al22 around martensitic transformation |
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| Authors: | Vijay Kumar Srivastava Ratnamala Chatterjee |
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| Affiliation: | 1. Institut Pprime, UPR 3346, CNRS—University of Poitiers, SP2MI-BP 30179, 86962 Chasseneuil-Futuroscope, France;2. CSIC—University of Sevilla, Avenida Américo Vespucio, 49, 41092 Sevilla, Spain;1. CAS Key Laboratory of Magnetic Materials and Devices, Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China;2. University of Chinese Academy of Sciences, 19 A Yuquan Rd, Shijingshan District, Beijing 100049, PR China;1. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, No. 30 Xueyuan Rd, Haidian District, Beijing 100083, People''s Republic of China;2. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, People''s Republic of China |
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| Abstract: | Electrical resistivity and magnetic properties on Ni52Mn26Al22 polycrystalline Heusler alloy are investigated in detail. The progress of transformation of this alloy was also followed by heat flux measurements. The transformations were found to be broad and hysteretic. Using Deng & Ansell’s phenomenological theory, the energy consumed for phase boundary motion in this polycrystalline alloy was found to be (31.5 J/mol). The broad transition as compared to Ni–Mn–Ga observed in this polycrystalline alloy, is discussed in light of a phenomenological model. |
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