Paper Titles
Influence of Extrusion Temperature on Microstructure, Texture and Fatigue Performance of AZ80 and ZK60 Magnesium Alloys
p.187
Development of New Types of Magnesium Alloys Containing Sr or RE Elements
p.191
Structure and Mechanical Properties of Mg-Zn-RE System Alloys
p.199
Hydrogen Evolution Behavior in an Al-Mg-Si Alloy Affected by Hydrogen Embrittlement
p.203
Tensile Properties and Deformation-Fracture Behavior of Ti-6Al-4V Alloy at Cryogenic Temperature
p.207
Study on Al Alloy Surfaces Treated by Ion Beams
p.211
Determination of Sr Content in Mg-Sr Alloys Using Faas
p.215
High Temperature Tensile Properties of a Mg-8%Li Alloy Shear-Strained by Torsion Working and ECAP
p.219
Recycling of Mg-Al-Ca Based Alloy by Vacuum Distillation
p.223

Tensile Properties and Deformation-Fracture Behavior of Ti-6Al-4V Alloy at Cryogenic Temperature

Article Preview

Abstract:

Tensile properties and deformation-fracture behavior at temperatures ranging from 123K to 293K of a Ti-6Al-4V alloy sheet with a thickness of 1.5mm has been studied, and the effects of testing temperature, specimen orientation and heat-treatment were investigated. An increase in strength and a decrease in fracture strain were found with decreasing tension temperature, and the anisotropy in tensile properties was observed at room and cryogenic temperatures both in the annealed and solution treated and aged (STA) specimens. TEM examinations indicated that plastic deformation occurred within both α and β phases in the STA specimens testing at either room or cryogenic temperature. The dominant deformation mechanism varied from dislocation slip at room temperature to twinning at 123K. SEM observations showed that the amount of dimples and tearing grains on fractured surfaces of the specimens decreased as testing temperature was decreased.

You might also be interested in these eBooks
PRICM 6 View Preview

Info:

Periodical:

Materials Science Forum (Volumes 561-565)

Pages:

207-210

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.561-565.207

Citation:

Cite this paper

Online since:

October 2007

Authors:

Shang Li Dong, Y.C. Xin, G. Lu, D.Z. Yang, S.Y. He, En-Hou Han

Keywords:

Cryogenic Temperature, Deformation, Fracture, Tension, TiAl

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2007 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] C. Leyens, M. Perters: Titanium and Titanium Alloys-Fundamentals and Applications. (WIlEY-VCH Publishers, Germany 2002).

Google Scholar

[2] Information on http: /www. titanium. org.

Google Scholar

[3] D.R. Salmon: Low Temperature Data Handbook, Titanium and Titanium Alloys (NPL Rep, QU53, N 8023448, 1979).

Google Scholar

[4] O.M. Ivasishin, P.E. Markovsky and G.A. Pakharenk: Mater. Sci. Eng. Vol A196 (1995), p.65.

Google Scholar

[5] F.S. Silva: Mater. Sci. Forum Vol. 455-456 (2004), p.861.

Google Scholar

[6] U. Osamu; I. Keisuke: Mater. Sci. Eng. Vol A176 (1994), p.397.

Google Scholar

[7] N. Kotobu; Y. Tetsumi; O. Toshio; ISIJ ISIJ International Vol. 31, n. 8 (1991), p.882.

Google Scholar

[8] E. D. Tabachnikova, V.Z. Bengus and A. V. Podolskiy: TMS Annual Meeting V. 2006, Ultrafine Grained Materials IV (2006), p.369 (a) (b) (c) (d).

Google Scholar