ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Tensile properties and deformation-fracture behavior at temperatures ranging from 123Kto 293K of a Ti-6Al-4V alloy sheet with a thickness of 1.5mm has been studied, and the effects oftesting temperature, specimen orientation and heat-treatment were investigated. An increase instrength and a decrease in fracture strain were found with decreasing tension temperature, and theanisotropy in tensile properties was observed at room and cryogenic temperatures both in the annealedand solution treated and aged (STA) specimens. TEM examinations indicated that plastic deformationoccurred within both α and β phases in the STA specimens testing at either room or cryogenictemperature. The dominant deformation mechanism varied from dislocation slip at room temperatureto twinning at 123K. SEM observations showed that the amount of dimples and tearing grains onfractured surfaces of the specimens decreased as testing temperature was decreased
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/17/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.561-565.207.pdf
