Structure and Properties of Ti55Al45 Alloys Prepared by Mechanical Alloying and Spark Plasma Sintering

Yao Dong Liu; Jing Xing; Di Ai; Song Zhe Jin

doi:10.4028/www.scientific.net/AMR.308-310.2547

Paper Titles

GTWZ-6012 Type Aerial Work Platform Hydraulic Legs of Stress Analysis and Calculation
p.2527

Thermal Study on High-Power White LED down Light
p.2531

Research on Whirling Vibration of CPP Propulsion Shafting
p.2537

The Monitoring System of Waste Heat Recovery Based on S7-300 PLC and WinCC
p.2543

Structure and Properties of Ti55Al45 Alloys Prepared by Mechanical Alloying and Spark Plasma Sintering
p.2547

Analysis to Dynamic Characteristics Influence on Bearing-Load Sensor to the Rotor System
p.2551

Study on the Freezing Resistance of HFCC
p.2555

Polynomial Moving Fitting Method for Edge Identification
p.2560

Microstructural Observation of SiC Surface Alloyed Carbon Steel
p.2565

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 308-310Structure and Properties of Ti55Al45 Alloys...

Structure and Properties of Ti55Al45 Alloys Prepared by Mechanical Alloying and Spark Plasma Sintering

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.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 308-310)

Pages:

2547-2550

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.308-310.2547

Citation:

Cite this paper

Online since:

August 2011

Authors:

Yao Dong Liu, Jing Xing, Di Ai, Song Zhe Jin

Keywords:

Compaction Pressure, Mechanical Alloying (MA), Microstructure, Spark Plasma Sintering (SPS)

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] Kim Y-W. Ordered intermetallic alloys, part Ⅲ{TTP}8546 : gamma titanium aluminides [J]. JOM, 46(1994) 30-39.

DOI: 10.1007/bf03220745

Google Scholar

[2] PENG Chao-qun, HUANG Bai-yun, HE Yue-hui. [J]. The Chinese Journal of Nonferrous Metals, 11(2001) 527-540. (in Chinese)

Google Scholar

[3] Keller M M, Jones P E, Porter W J, et al. The development of low-cast TiAl automotive valves [J]. JOM, 49(1997) 42-44.

DOI: 10.1007/bf02914683

Google Scholar

[4] Matsubara T, Shibutani T, Uenishi K, Kobayashi KF. Intermetallics 8(2000)815.

Google Scholar

[5] ZhengMing Sun, Hitoshi Hashimoto. [J]. Intermetallics 11(2003) 825-834.

Google Scholar

[6] P.L. Martin and D.A. Hardwick, in Intermetallic Compounds, ed. J.H. Westbrook and R.L. Fleischer, vol.I, p.637, John,Wiley,New York(1994).

Google Scholar

[7] T.ItsukaiChi, K.Masuyama, M.Umemoto, I.Okane, and J.G. Cabanas-Moreno, J.Mater. Res.8 (1993) 1817.

Google Scholar

[8] 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. p.5.437-5.442. (1998)

Google Scholar

[9] Ameyama K,Okada O Tokizane M,Nakata K,Hishinuma A.Japn Soc Power Metall 40(1993)341.

Google Scholar

[10] Uenishi K, Matsubara T, Kambara M, Kobayashi KF. Scripta Mater 44(2001)2093.

Google Scholar

[11] N.Q. Wu, G. X. Wang, W. Li, J. M. Wu and Z. Z. Li, Mater.Lett.32(1997)259.

Google Scholar