Textural transitions in titanium alloys during polymorphic transformations and recrystallization of the beta-phase
| Autor: | I. V. Egiz, V. N. Fedulov, A. A. Babareko |
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| Rok vydání: | 1991 |
| Předmět: |
Phase transition
Materials science Annealing (metallurgy) Metallurgy Alloy Metals and Alloys Titanium alloy chemistry.chemical_element Recrystallization (metallurgy) engineering.material Condensed Matter Physics law.invention chemistry Mechanics of Materials Impurity law engineering Composite material Crystallization Titanium |
| Zdroj: | Metal Science and Heat Treatment. 33:224-227 |
| ISSN: | 1573-8973 0026-0673 |
| DOI: | 10.1007/bf00769348 |
| Popis: | 1. Analysis of the crystallographic texture of the α-phase in rolled sheets of titanium pseudo-α-alloys that had previously been subjected to short-term annealing at different temperatures makes it possible to determine the temperature of the polymorphic transformation of these alloys with high accuracy and investigate the recrystallization process of the high-temperature phase. The temperature Tpt=955±15 and 1018±17°C for alloys OT4 and VT20, respectively. 2. Use of x-ray photography with layer-by-layer removal of material from the surface of the specimen makes it possible to ascertain the variation in the temperature of the phase transition over a section of an article in the presence of an impurity gradient across the thickness. Thus, Tpt=1053±17°C on the surface of an alloy VT20 sheet; this is ∼35°C higher than that in the core. |
| Databáze: | OpenAIRE |
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