S. Ya. Betsofen, E. I. Lukin, A. A. Ashmarin, I. O. Bannykh
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Abstract—The formation of the texture of the bcc → hcp phase transformation was studied in VT23 alloy (Ti‒5.5Al–2Mo–4.5V–1Cr–0.6Fe), Mg–8Li–1Al alloy, and high-manganese steels Fe–15.9Mn and Fe–17.7Mn. It was shown that the texture of the β-phase in the VT23 and Mg–8Li–1Al alloys contains components of bcc metals, while the texture of the α-phase is single-component {110}〈100〉 prismatic and differs from the rolling textures of titanium and other metals with the hcp lattice. Variations in the texture of the ε-phase indicate that, during cold rolling, in Fe–17.7Mn steel, only the ε → α' transformation occurs, whereas in Fe–15.9Mn steel, along with the ε → α' transformation, the reverse α' → ε transformation occurs, as a result of which the (110) texture is formed in the ε-phase in the plane of the sheet, as in titanium and magnesium alloys. The lattice deformations as a result of the bcc → hcp transformation were calculated according to the Burgers orientation relationships and were compared with the sheet deformations during rolling. The comparison showed that, for all the studied materials, only one transformation variant occurs; it is characterized by a complete correspondence of the lattice and sheet deformations, in which the {001}〈110〉 orientation of the bcc phase is transformed into the {110}〈100〉 orientation of the hcp phase.
期刊介绍：
Russian Metallurgy (Metally) publishes results of original experimental and theoretical research in the form of reviews and regular articles devoted to topical problems of metallurgy, physical metallurgy, and treatment of ferrous, nonferrous, rare, and other metals and alloys, intermetallic compounds, and metallic composite materials. The journal focuses on physicochemical properties of metallurgical materials (ores, slags, matters, and melts of metals and alloys); physicochemical processes (thermodynamics and kinetics of pyrometallurgical, hydrometallurgical, electrochemical, and other processes); theoretical metallurgy; metal forming; thermoplastic and thermochemical treatment; computation and experimental determination of phase diagrams and thermokinetic diagrams; mechanisms and kinetics of phase transitions in metallic materials; relations between the chemical composition, phase and structural states of materials and their physicochemical and service properties; interaction between metallic materials and external media; and effects of radiation on these materials.
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