Thermally activated deformation of precipitation hardened beta titanium alloy single crystals

Autor:	D. A. Koss, Steven M. Tuominen
Rok vydání:	1975
Předmět:	Materials science Precipitation (chemistry) Metallurgy Alloy General Engineering Titanium alloy Slip (materials science) Work hardening Flow stress engineering.material Reduced properties Precipitation hardening engineering Composite material
Zdroj:	Materials Science and Engineering. 21:71-76
ISSN:	0025-5416
DOI:	10.1016/0025-5416(75)90200-1
Popis:	The temperature dependence of the flow stress behavior has been measured from 77 to 740 K for age-hardenable β-phase (b.c.c.) Ti - 40 V - 1 Si alloy single crystals. Upon aging solution-treated crystals, an increase in the athermal yield stress at 740 K is accompanied by a decrease in the temperature dependence of the yield stress. Direct electron microscopy observations, slip character and work hardening behavior indicate that the precipitate particles are predominantly sheared in the conditions tested. The reduced temperature dependence of the yield stress with aging appears to be a result of: (a) the relative flow stress difference of screw versus edge dislocations moving through penetrable obstacles and (b) solute association which may occur during aging.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6f83279a4cb1ac95be7283833087ac25 https://doi.org/10.1016/0025-5416(75)90200-1 Zobrazit plný text záznamu