Superplastic behaviour of ultrafine-grained Ti-6Al-4V alloys

Superplastic behavior of the ultrafine-grained (UFG) Ti-6Al-4V alloy produced by high pressure torsion (HPT) has been studied. High elongations (more than 500 percent) have been observed in this alloy during tensile tests at relatively low temperatures and high strain rates. At the same time, the Su...

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Published inMaterials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 323; no. 1-2; pp. 318 - 325
Main Authors Sergueeva, A V, Stolyarov, V V, Valiev, R Z, Mukherjee, A K
Format Journal Article
LanguageEnglish
Published 31.01.2002
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Summary:Superplastic behavior of the ultrafine-grained (UFG) Ti-6Al-4V alloy produced by high pressure torsion (HPT) has been studied. High elongations (more than 500 percent) have been observed in this alloy during tensile tests at relatively low temperatures and high strain rates. At the same time, the Superplastic behavior of this alloy has several specific features such as the relatively low values of strain rate sensitivity of flow stress and significant strain hardening. Moreover, it was shown that the alloy, processed by HPT, demonstrates an outstanding room temperature strength about 1500 MPa after Superplastic deformation.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:0921-5093
DOI:10.1016/S0921-5093(01)01384-3