Martensitic transformation and structural states in Ni44.0Mn43.5Sn12.5-xAlx (x = 1, 2, 3 at.%) magnetic shape memory alloys prepared by vacuum hot pressing
作者： E. Villa , W. Maziarz , A. Wójcik , A. Nespoli , P. Lázpita
DOI: 10.1016/J.JALLCOM.2020.156315
关键词:
摘要: Abstract Heusler-type Ni–Mn–Sn magnetic shape memory alloys (MSMAs) that exhibit a significant magnetocaloric effect due to field-induced martensitic transformation (MT) represent promising applications within the field of solid-state cooling. However, their MT and physical properties strongly depend on intricacies fabrication technology employed. In current study, we demonstrated advantages use powder metallurgy in preparation MSMAs. Powders were vacuum hot pressed fabricate Ni44.0Mn43.5Sn12.5-xAlx (x = 1, 2, 3 at.%) The way which Al influenced behavior, structural characteristics, thermomechanical MSMAs was investigated. findings revealed temperature increases significantly response doping, by approximately 20 K/1 at.%Al. Striking nanostructural states austenite phase, giving rise unusual stress-strain behavior studied.
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