Paper Titles
Evaluation of Critical Fracture Stress in Low Alloy Steels by Finite Element Analysis of Small Punch Test
p.416
Empirical Correlation between Parameters from Small Punch and Tensile Curves of Mn-Mo-Ni Low Alloy Steels by Using Test and FE Analysis
p.420
Structural Strength and Buckling Analysis for a Steel Derrick after its Members Removed Partly
p.424
Strengthening of Cu-Ti2SnC Composites due to Microstructural Changes in the Material
p.429
Impact Toughness of Titanium Alloys with Different Strengthening Methods
p.433
Strength Calculation of the Screw Conveyor of a Decanter Centrifuge under Normal Operation Conditions
p.438
The Effect of Heat Treatment on the Properties of LF9 Alloy
p.442
Creep Behavior of Functionally Graded Material under In-Plane Bending Moment
p.449
Experimental Study on Residual Stress of K24 Superalloy in Laser Cladding Zone by Laser Shock Processing
p.453

Impact Toughness of Titanium Alloys with Different Strengthening Methods

Article Preview

Abstract:

In present paper effect of alloying elements and strengthening particle on the impact toughness were investigated. Load and energy in the impact tests were also discussed in detail for Ti-2Al, Ti-2Sn,Ti-2Zr, Ti-1Mo and Ti/TiC. Impact tests were carried out at room temperature (293K) and low temperature (83K) using a 300J capacity impact machine. Ti-1Mo, Ti-2Zr,Ti-2Sn alloys exhibit high impact toughness even at low temperature, while Ti-2Al and Ti/TiC only have high toughness at room temperature. At room temperature, general yielding occurred in all the materials, but it occurred only in Ti-1Mo, Ti-2Zr and Ti-2Sn at low temperature. It seemed that strengthening titanium couldn’t affect the elastic energy (Ei) effectively, but bring about more changes to Ep (propagation energy of crack) than to Ei (initiation energy of crack). As for the effect of alloying elements on the impact toughness, it seems to be related to the comprehensive result of the concentration and electronegative property of alloying elements. The interface between the TiC particles and matrix resulted in low toughness, especially at cryogenic temperature.

You might also be interested in these eBooks
Progresses in Fracture and Strength of Materials and Structures View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 353-358)

Pages:

433-437

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.353-358.433

Citation:

Cite this paper

Online since:

September 2007

Authors:

Qiao Yan Sun, Lin Xiao, J. Sun

Keywords:

Fracture, Impact Toughness, 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] E.W. Collings.: Applied Superconductivity, Metallurgy and physics of titanium alloys.V. 2.N.Y. Press, (1986): p.257.

Google Scholar

[2] Q.Y. Sun, S.J. Song, R.H. Zhu, H.C. Gu. Journal of Materials Science, Vol. 37, (2002), pp.2543-2547.

Google Scholar

[3] Q.Y. Sun, H.C. Gu. Materials Science and Engineering A, Vol. 316, (2001), pp.80-86.

Google Scholar

[4] W. L Server, Journal of Testing and Evaluation, JTEVA, Vol. 6, No. 1, (1978), pp.29-34.

Google Scholar

[5] T. Mohandas a, D. Banerjee a, V.V. Kutumba Rao b Materials Science and Engineering A Vol. 254, (1998), pp.147-154.

Google Scholar

[6] Hirofumi Yoshimuraa, Jun Nakahigashib: Journal of Alloys and Compounds. Vol. 293-295 (1999), pp.858-861.

Google Scholar