The Influence of Heat Treatment on the Elastic and Microplastic Properties of Ultrafine-Grained Titanium with Variable Content of Impurities
Technical Physics Letters(2019)
Abstract
Results of investigations of the influence of heat treatment at elevated temperatures on the elastic and microplastic properties of ultrafine-grained (UFG) titanium processed by severe plastic deformation are discussed. The samples were prepared from various batches of α-titanium (VT1-0, Grade 4, and PT3-V) with different initial polycrystalline structures and impurity compositions. Experiments showed that significant changes in the structure (grain size), elastic properties, and microplasticity characteristics only took place in the α-Ti grade of maximum purity (VT1-0). UFG titanium of Grade 4 and PT3-V showed much higher thermal stability of properties, which was probably related to the presence of large amounts of various impurities.
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Key words
ultrafine-grained titanium, Young’s modulus, internal friction, elastic properties.
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