Electron Microscopy of Stress-Induced Martensite and Pretransition Microstructures in Ni62.5Al37.5
- 1 January 1991
- journal article
- Published by Springer Nature in MRS Proceedings
Abstract
Static configurations of stress-induced martensite and pretransition microstructures in Ni62.5A137.5 have been studied with conventional as well as high resolution electron microscopy using single crystal TEM specimens containing defect sites of extremely high stress intensity. From images of different regions around such defects it can be concluded that the austenite lattice develops transverse displacement modulations with increasing amplitude and correlation directly related to the {110} shear-plus-shuffle displacements required to form the martensite structures. Different steps in this transition sequence are presented and discussed.Keywords
This publication has 8 references indexed in Scilit:
- Neutron-scattering and electron-microscopy studies of the premartensitic phenomena in alloysPhysical Review B, 1991
- Molecular-dynamics study of incommensurate phases in a three-dimensional crystalPhysical Review B, 1991
- Premartensitic microstructures in NiAl ordered β2 phase: I - Effects induced by coolingScripta Metallurgica et Materialia, 1990
- Electron microscopy and neutron scattering studies of premartensitic behavior in ordered NiAl β2 phaseMaterials Science and Engineering: A, 1990
- On the interpretation of high resolution electron microscopy images of premartensitic microstuctures in the Ni-Al β2 PhaseUltramicroscopy, 1990
- Crystal structure of stress-induced and thermal martensites in 63.1at%NiAl alloyScripta Metallurgica, 1983
- REVIEW—Transformation Toughening in Ceramics: Martensitic Transformations in Crack‐Tip Stress FieldsJournal of the American Ceramic Society, 1980
- Anomalies in the electron diffraction patterns of nickel-rich β′-NiAl alloysScripta Metallurgica, 1977