| Numéro |
J. Phys. Colloques
Volume 43, Numéro C4, Décembre 1982
ICOMAT-82International Conference on Martensitic Transformations |
|
|---|---|---|
| Page(s) | C4-659 - C4-660 | |
| DOI | https://doi.org/10.1051/jphyscol:19824106 | |
International Conference on Martensitic Transformations
J. Phys. Colloques 43 (1982) C4-659-C4-660
DOI: 10.1051/jphyscol:19824106
STRESS-INDUCED MARTENSITIC TRANSFORMATION AND A NEW 7-LAYER MARTENSITE PHASE IN THE 63.1Ni-Al ALLOY
V.V. Martynov1, K. Enami2, L.G. Khandros1, A.V. Tkachenko1 et S. Nenno21 Institute of Metal Physics, Academy of Sciences Ukr. SSR, Kiev, USSR
2 Department of Materials Science and Engineering, Osaka University, Suita, Japan
Abstract
It is well known that the nickel-rich Ni-Al β phase alloy exhibits the martensitic transformation and the crystal structures of the as-quenched martensites are Llo(α'2) and 2H, (1,2). However, there is no systematic investigation on the deformation behaviour and stress-induced martensitic transformation in this alloy system, other than the deformation behaviour of the α'2 martensite (3). Recently we investigated the deformation behaviour and the stress-induced martensitic transformation of the single crystals of the 63.lat.%Ni-Al alloy and found a new martensite phase having a monoclinic 7-layer structure, by means of tensile testing, in situ X-ray diffraction and optical microscopy. The detailed procedures of the preparation of the alloy are the same as described in (3). The Ms temperature of the present alloy was found to be about 253K. All experiments were done at r.t., i.e. above Ms.