Parameters Optimization of γ-Ti-46.6Al-1.4Mn-2Mo Alloy by Hot-Pressing Sintering and its Microstructures

Abstract:

Article Preview

In order to obtain the maximum relative density of γ-Ti-46.6Al-1.4Mn-2Mo alloy, the effects of the sintering temperature, heating preservation time and compacting force prepared by hot pressing were studied using Back Propagation (BP) Neural Network. The process parameters were optimized by Genetic Algorithm (GA) contributed by the use of Matlab. The results show that the optimum preparation process for Ti-46.6Al-1.4Mn-2Mo alloy are hot-pressing sintering temperature of 1374oC, heating preservation time of 291 min, compacting force of 37Mpa. The relative density of Ti-46.6Al-1.4Mn-2Mo alloy prepared under the condition is 96.11% (predicted value is 96.87%) with the relative error was only 0.78%. The microstructures of Ti-46.6Al-1.4Mn-2Mo alloy are studied by X-ray, optical microscope and SEM.

Info:

Periodical:

Edited by:

M. Ashraf Imam, F. H. (Sam) Froes and Ramana G. Reddy

Pages:

92-99

Citation:

X. G. Li et al., "Parameters Optimization of γ-Ti-46.6Al-1.4Mn-2Mo Alloy by Hot-Pressing Sintering and its Microstructures", Key Engineering Materials, Vol. 551, pp. 92-99, 2013

Online since:

May 2013

Export:

Price:

$38.00

[1] Y.W. Kim, Gamma titanium aluminides, JOM, 39(1995)27.

[2] Y.W. Kim, F.H. Fores, High Temperature Aluminides and Inter-metallics, TMS, Warrendale, PA, 1990, p.465.

[3] Y. WU, S.K. Hwang, K. Hagihara, Y. Umakoshi, Isothermal oxidation behavior of two-phase TiAl-Mn-Mo-C-Y alloys fabricated by different processes, Intermetallics, 14 (2006) 9-23.

DOI: https://doi.org/10.1016/j.intermet.2005.02.014

[4] Nursel. Ozturk, Ferruh. Ozturk, Hybid neural network and genetic algorithm based machining feature recognition, Journal of Intelligent Manufacturing, 15 (2004) 287-298.

DOI: https://doi.org/10.1023/b:jims.0000026567.63397.d5

[5] Jingbo Xu, Huimin Lu, Qiang Li, Optimization of process parameters of preparing foamed Al-Si alloy based on GA-based BP neural network, TMS, San Diego, CA, 2011, pp.521-525.

DOI: https://doi.org/10.1007/978-3-319-48179-1_88

[6] C.P. Gazzara, D.R. Messier, Determination of Phase Content of Si3N4 by X-ray Diffraction Analysis, U.S. Army Report No. AMMRC-TR-75-4, (1975).

[7] S.G. Pyo, S.M. Choi, M.S. Yoo, J.K. Oh, S.K. Whang, N.J. Kim, Nucleation and growth of α phase in hot extruded Ti-46. 6Al-2Mo-1. 4Mn intermetallic alloy produced by hot extrusion of elemental powders, Materials Science and Engineering, A374 (2004).

DOI: https://doi.org/10.1016/j.msea.2004.01.053

[8] T.K. Lee, E.I. Mosunov, S.K. Hwang, Consolidation of a gamma TiAl-Mn-Mo alloy by elemental powder metallurgy, Materials Science and Engineering, A239-240 (1997), 540-545.

DOI: https://doi.org/10.1016/s0921-5093(97)00628-x

[9] T.K. Lee, J.H. Kim, S.K. Hwang, Direct consolidation of γ-TiAl-Mn-Mo from elemental powder mixtures and control of porosity through a basic study of powder reactions, Metallurgical and materials transactions A, 28A(1997), 2723-2729.

DOI: https://doi.org/10.1007/s11661-997-0029-2

Fetching data from Crossref.
This may take some time to load.