Journal of the Japan Institute of Metals and Materials · 1978 · 37 citations · 0 references
Natural SciencesMaterials EngineeringMaterials ScienceMaterials CharacterizationMechanical Behavior Of MaterialsMetallurgyAlloysCrystal LatticeCrystal SystemsDeformation MechanismsMetalsMicrostructure EvolutionDeformationMicroscopyStress-induced Phase TransformationTitanium AlloysTwin FormationTwinned MartensiteTwinning AnalysisX-ray Diffraction Analysis
The stress-induced products formed by cold-rolling in Ti-11∼20%Mo and Ti-16%V binary alloys have been examined by means of optical microscopy, X-ray diffraction and transmission electron microscopy.Plate-like products in a Ti-11%Mo alloy with a meta-stable β phase were {332} twins and a small amount of orthorhombic martensites, and those in Ti-13%Mo, 15%Mo and 16%V alloys with a meta-stable β phase were {332} twins. Meanwhile, plate-like products in a Ti-20%Mo alloy with a stable β phase were {112} deformation twins. It is considered that the unusual {332} twinning in bcc crystals is associated with the unstability of atoms in a meta-stable β phase rather than with the presence of the ω phase formed during quenching.