The Orientation Relationships and Crystal Habits in the Martensite Transformation of a Cu-Al Alloy
- 1 December 1964
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 3 (12), 749-756
- https://doi.org/10.1143/jjap.3.749
Abstract
The orientation relationships in a Cu-11.9% Al alloy have been studied with thin foils containing β' martensite (orthorhombic lattice) and β1 phase (ordered B. C. C.) produced by heating in an electron microscope. The crystal habits and other related phenomena have also been observed. On heating β' martensite plate, β1 crystals nucleate in the inner region of the martensite at about 400°C and they grow very straight and all parallel. The growth is not jerky but continuous. Stacking faults in the β' martensite are not annealed out even at such high temperatures. It is found that the orientation relationships are (110)β1 //(128̄)β', [11̄1]β1 //[21̄0]β'. The boundary plane between two variants of martensite is (128̄)β', which is parallel to (110)β1 in the parent phase.Keywords
This publication has 4 references indexed in Scilit:
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- Electron Microscope Study of the Crystal Structure of the Martensite in a Copper-Aluminium AlloyJapanese Journal of Applied Physics, 1963
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