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Reversibility and Hysteresis of Martensitic Transformations
Author(s) -
Hornbogen E.
Publication year - 1992
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221720116
Subject(s) - martensite , hysteresis , diffusionless transformation , ferromagnetism , materials science , shape memory alloy , condensed matter physics , shear (geology) , lattice (music) , crystal structure , transformation (genetics) , phase (matter) , thermodynamics , crystallography , metallurgy , chemistry , microstructure , physics , composite material , organic chemistry , biochemistry , acoustics , gene
The term martensitic is used for a diffusionless structural phase transformation β → α M which is associated with a considerable amount of lattice variant shear: γ βα ≈ 0.2. This reaction is defined as reversible if the reverse reaction α M → β faultlessly restores the original parent crystal β. Sets of factors are established which favour the reversible (or irreversible) mode. Hysteresis is due to lattice friction acting on the moving β/α M ‐transformation interfaces during a transformation cycle. It can vary by several orders of magnitude. Analogies are indicated between ferromagnetic and martensitic hysteresis.