Effect of deformation on structure and mechanical behavior of polycrystalline Ni-Mn-Ga alloys

Deformation of polycrystalline Ni-Mn-Ga alloys was studied for both the L21 parent phase and 10 M martensitic state. The effect of deformation by compression up to the fracture on mechanical behavior and structure change was studied for the inhomogeneous as-cast state and after annealing at 900 deg...

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Bibliographic Details
Published in:The European physical journal. ST, Special topics Special topics, 2008-05, Vol.158, p.93-98
Main Authors: Morawiec, H, Goryczka, T, Lelatko, J, Prusik, K, Drdzen, A
Format: Article
Language:English
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Summary:Deformation of polycrystalline Ni-Mn-Ga alloys was studied for both the L21 parent phase and 10 M martensitic state. The effect of deformation by compression up to the fracture on mechanical behavior and structure change was studied for the inhomogeneous as-cast state and after annealing at 900 deg C for 50 hours. The structure, after deformation of the parent phase, observed by TEM reveals the presence of 10 M and 14 M martensite in the matrix, whereas the deformation of 10 M martensite does not show the change of the structure type. The stress-strain curves were analyzed and compared with the earlier published results.
ISSN:1951-6355
1951-6401
DOI:10.1140/epist/e2008-00659-1