The Impact of Diffusion on Synthesis of High-Strength Titanium Alloys from Elemental Powder Blends

Orest M. Ivasishin; Dmytro G. Savvakin

doi:10.4028/www.scientific.net/KEM.436.113

Paper Titles

The FFC Cambridge Process for Production of Low Cost Titanium and Titanium Powders
p.75

High Temperature Electrolysis of Ti and its Alloys with a DC-ESR Unit
p.85

Electrochemical Production of Titanium from Oxycarbide Anodes
p.93

Consolidation Process in Near Net Shape Manufacturing of Armstrong CP-Ti/Ti-6Al-4V Powders
p.103

The Impact of Diffusion on Synthesis of High-Strength Titanium Alloys from Elemental Powder Blends
p.113

Investigation of Pressing and Sintering Processes of CP-Ti Powder Made by Armstrong Process
p.123

Microwave Sintering and Melting of Titanium Powder for Low-Cost Processing
p.131

Microwave Sintering of Titanium
p.141

Reaction Assisted Ultrasonic Consolidated TiNi
p.149

HomeKey Engineering MaterialsKey Engineering Materials Vol. 436The Impact of Diffusion on Synthesis of...

The Impact of Diffusion on Synthesis of High-Strength Titanium Alloys from Elemental Powder Blends

Abstract:

High strength near-beta titanium alloys are being increasingly used in industry due to their excellent combination of properties. Blended elemental powder metallurgy (BEPM) allows to produce the above alloys and parts from them in a cost-effective manner. However, the alloy synthesis is complicated by a big amount (up to 18 wt.%) of alloying elements which diffusional redistribution between alloying particles and titanium matrix has a strong impact on microstructure evolution. In this paper synthesis of the high-strength alloys from the powder blends based on hydrogenated titanium was studied. It was found that hydrogen strongly affects diffusion controlled processes upon synthesis, such as chemical homogenization, densification and grain growth through its influence on phase composition and defect structure of the blends. Optimization of the processing parameters allowed to produce uniform, nearly-dense alloys with reduced grain size, which mechanical properties met the requirements of corresponding specifications.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Key Engineering Materials (Volume 436)

Pages:

113-121

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.436.113

Citation:

Cite this paper

Online since:

May 2010

Authors:

Orest M. Ivasishin, Dmytro G. Savvakin

Keywords:

Alloying Element, Density, Diffusion, Hydrogenated Titanium Powder, Mechanical Property, Microstructure, Synthesis, Titanium Alloy

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

References

[1] F.H. Froes, D. Eylon, in: Titanium Technology: Present Status and Future Trends, edited by F.H. Froes, D. Eylon, H.B. Bomberger, Titanium Development Assosiation (1985), pp.49-59.

DOI: 10.1520/stp18390s

Google Scholar

[2] S. Abkowitz, S.M. Abkowitz, P.F. Weihrauch, M.G.H. Wells: PM in Aerospace, Defense and Demanding Applications, F.H. Froes, ed., Metal Powder Industries Federation, Princeton, NJ (1993) p.241.

Google Scholar

[3] O.M. Ivasishin, D.G. Savvakin, F.H. Froes, V.S. Moxson, K.A. Bondareva: Materials Technology (2002) vol. 17, No 1, pp.20-25.

Google Scholar

[4] O.M. Ivasishin, D.G. Savvakin, X.O. Bondareva, O.I. Dekhtyar, in: Proceedings of 10th World Confer. On Titanium Ti-2003, WILEY-VCH Verlag, Weinheim (2004) v. 1, pp.495-502.

Google Scholar

[5] O.M. Ivasishin, D.G. Savvakin, V.S. Moxson, V.A. Duz, C. Lavender, in: Proceedings of 11th World Conference on Titanium Ti-2007, Edited by M. Niinomi, S. Akiyama et al., Japan Institute of Metals (2007), pp.757-760.

Google Scholar

[6] O.M. Ivasishin, D. Eylon, V.I. Bondarchuk, D.G. Savvakin: Defect and Diffusion Forum, Vol. 277 (2008) pp.177-185.

DOI: 10.4028/www.scientific.net/ddf.277.177

Google Scholar

[7] Y. Liu, L.F. Chen, H.P. Tang et al: Material Science and Engineering A 418 (2006) pp.25-35.

Google Scholar

[8] O.M. Ivasishin, V.T. Cherepin, V.N. Kolesnik, N.M. Gumenyak: submitted to Instruments and Experimental Techniques (2009).

Google Scholar

[9] G. Lütjering, J.C. Williams: Titanium. Springer-Verlag, Berlin (2003).

Google Scholar

[10] Information on http: /www. timet. com.

Google Scholar

[11] Ya. E. Geguzin: Physics of Sintering. Moscow, Nauka, publisher, 1967 (in Russian).

Google Scholar

[12] A. San-Martin, F.D. Manchester, in: Bull. Alloy Phase Diagrams 8(1), Feb. (1987).

Google Scholar