This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Structure and Properties of Ti55Al45 Alloys Prepared by Mechanical Alloying and Spark Plasma Sintering
Technical Paper
2008-01-1418
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Amorphization and crystallization behaviors of Ti55Al45 powders during mechanical alloys (MA) and subsequent Spark Plasma Sintering are studied. It is found that the nanocrystallization process of the Ti-Al alloy proceeds and the sintering temperature can control the microstructure of alloy. The sintering of the compacts is carried out at the temperatures of 1100-1200 °C with a compaction pressure of 30MPa and a heating rate of 30°C min-1. Specimens with high densities and approaching the equilibrium state can be obtained in short time of 180s by spark sintering than conventional sintering. Such shorter high temperature is important to prevent grain growth. The microstructures of the alloy contains equiaxed gamma TiAl with sub-micron grain size and small amount alpha Ti3Al phase.
Authors
Topic
Citation
Liu, Y. and Miao, S., "Structure and Properties of Ti55Al45 Alloys Prepared by Mechanical Alloying and Spark Plasma Sintering," SAE Technical Paper 2008-01-1418, 2008, https://doi.org/10.4271/2008-01-1418.Also In
References
- Kim Y-W. Ordered intermetallic alloys, part III: gamma titanium aluminides JOM 46 1994 30 39
- PENG Chao-qun HUANG Bai-yun HE Yue-hui The Chinese Journal of Nonferrous Metals 11 2001 527 540
- Keller M M Jones P E Porter W J et al. The development of low-cast TiAl automotive valves JOM 49 1997 42 44
- Matsubara T Shibutani T Uenishi K Kobayashi KF. Intermetallics 8 2000 815
- Sun ZhengMing Hashimoto Hitoshi Intermetallics 11 2003 825 834
- Martin P.L. Hardwick D.A. Intermetallic Compounds Westbrook J.H. Fleischer R.L. I 637 John,Wiley New York 1994
- ItsukaiChi T. Masuyama K. Umemoto M. Okane I. Cabanas-Moreno J.G. J.Mater.Res. 8 1993 1817
- PENG Chao-qun Effects of Cyclic Heat Treatment on Microstructures and Mechanical Properties of TiAl-based Alloys Changsha Central South University 2001
- Yang L.W. Cheng J.Y. Luoh T. Sun P.L. Kao P.W. Scripta Materialia 51 2004 47 51
- WANG Jian-nong New Processing Technology and Microstructure Control of TiAl-based Alloys Key Fundamental Problems Research of High Performance Intermetallic Structural Materials 2000-05
- Szewczak E. Presz A. Witek A. Wyrzykowski J.W. Matyja H. Nanostructured Materials 12 1-4 1999 167 170
- Park Y.H. et al. Microstructure and mechanical properties of HIPed compacts of mechanically alloyed Ti-Al powder
- Oliker V.E, Kresanov V.S. Sirovatka V.L. Gridasova T. Ya. Timofeeva I.I. Bykov A.I. Powder Metallurgy and Metal Ciramics 42 1-2 2003 38 49
- Abe, T Hashimoto, H Um, T Park, Y H Sun, Z M. PM98: 1998 Powder Metallurgy World Congress & Exhibition Granada; Spain 18-22 Oct. 1998 5.437 5.442 1998
- Ameyama K Okada O Tokizane M Nakata K Hishinuma A. Japn Soc Power Metall 40 1993 341
- Suryanarayana C. Chen Guo-Hao Frefer Abdulbaset Froes F. H. Materials Science and Engineering A 158 1 15 October 1992 93 101
- Ivasishin O. M. Demidik A. N. Savvakin D. G. Poroshk. Metall. 9-10 632 69 1999
- Uenishi Keisuke Matsubara Toshio Shibutani Tomohide Kobayash Kojiro F. Intermetallics 10 2002 105 111
- Uenishi K Matsubara T Kambara M Kobayashi KF. Scripta Mater 44 2001 2093
- Wu N.Q. Wang G. X. Li W. Wu J. M. Li Z. Z. Mater.Lett. 32 1997 259