A5031084708- Shape Memory Alloy Transformations
- Magnetic and transport properties of perovskites and related materials
Hebei University of Technology
2023-2024
Shanghai Jiao Tong University
2012
Using empirical data, a map of composition versus magnetic properties was developed to design Ni-Mn-In shape-memory alloys. By the aid this map, five alloys with desired were designed. A linear dependence martensitic transformation temperature (Tm) and alloy revealed. from austenite martensite could be achieved at an electron concentration ∼7.9. As such, series alloys, which work different conditions, can designated under guidance contour maps derived Tm thermal hysteresis.
Single-phase Mn50Ni40In10−xCux (x = 0, 1, 2, 4, 6, 8, and 10) Heusler alloys were synthesized by melt-spinning method. Martensitic transformation is retained within the whole composition range studied. The substitution of Cu for In leads to a drastic increase in martensitic temperature TM from below room above 750 K, enhances antiferromagnetic character martensite. related increasing electron concentration e/a decreasing cell volume V with doping. energy difference between martensite...
Magnetic shape memory alloys Mn2NiGa1−xCux (x = 0–0.7) melt-spun ribbons were synthesized, and their crystal structure, martensitic transformation, magnetic transport properties studied. In Mn2NiGa1−xCux, unusual composition dependences of these observed: the lattice parameter increases with Cu-doping, though Cu has a smaller atomic radius compared Ga. The transformation temperature decreases increasing content at first reaches minimum x 0.3 then rapidly as further. variation tendency...