Martensitic transformations, thermal expansion and mechanical properties of titanium-niobium alloys

Autor:	I. A. Korms, G.V. Yudin, L.P. Khromova, N. B. D’yakonova, Yu.L. Rodionov
Rok vydání:	2003
Předmět:	Materials science Metallurgy Niobium General Physics and Astronomy Thermodynamics chemistry.chemical_element Atmospheric temperature range Thermal expansion Condensed Matter::Materials Science Lattice constant chemistry Phase (matter) Martensite Orthorhombic crystal system Texture (crystalline)
Zdroj:	Journal de Physique IV (Proceedings). 112:1051-1054
ISSN:	1155-4339
Popis:	Thermal expansion in quenched and cold rolled Ti - Nb alloys (30-50 w.% Nb) was studied and temperature ranges were determined, in which anomalies associated with the sample expansion and compression occur. Phase transformations were studied by means of X-ray diffraction in the temperature range -190 < T < +150°C. Cold rolling results in significant decrease of thermal expansion along the rolling direction. Thermal coefficient of linear expansion varies with niobium content for deformed alloys assuming negative values for alloys with 34 - 38 % Nb the minimum value being -1.3.10 -5 K -1 . Anomalies of TCLE are connected to temperature dependences of lattice constants of orthorhombic martensite, volume fractions of the phases and texture of the alloys.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::41c2f56713623acd12b369df4267b0f6 https://doi.org/10.1051/jp4:20031062 Zobrazit plný text záznamu