Hot Deformation Mechanisms in 7075Al/10%SiCp Metal Matrix Composites
Advances in Networks
Volume 1, Issue 3, May 2013, Pages: 34-39
Received: Sep. 24, 2013; Published: Nov. 30, 2013
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M. Rajamuthamilselvan, Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar, Tamilnadu, India
S. Ramanathan, Department of Manufacturing Engineering, Annamalai University, Annamalai Nagar, Tamilnadu, India
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The high-temperature deformation behavior of Al 7075/SiCp Composites was investigated by carrying out compression tests for determination of the optimum hot deformation conditions. The tests were carried out in the temperature range of 300 – 500 ◦C and strain rates ranging from 0.001 – 1.0 s-1 with a height reduction of 50%. The optimum hot-working conditions were decided from the processing map based on the dynamic materials model (DMM). Dynamic recrystallization (DRX) occurred over the entire temperature and strain rate range. However, uniformly sized grains were formed at the temperature range of 300 – 500 ◦C and strain rate range of 0.001– 0.01 s-1, which are the optimum condition for hot working of this material. The characteristic microstructures predicted from the processing map agreed well with the results of microstructural observations.
Metal-Matrix Composites (MMCS), Hot Deformation, Dynamic Recrystallization, Processing Map
To cite this article
M. Rajamuthamilselvan, S. Ramanathan, Hot Deformation Mechanisms in 7075Al/10%SiCp Metal Matrix Composites, Advances in Networks. Vol. 1, No. 3, 2013, pp. 34-39. doi: 10.11648/
Chen K.H and Huang L.P, "Strengthening-toughening of 7××× series high strength aluminium alloys by heat treatment," Trans. Nonferrous Metals Soc. of China. Vol.13.2003; 484- 490.
Wang H.B, Huang J.F and Cui H, "Microstructure evolution of ultrahigh strength spray deposited Al–Zn–Mg–Cu alloy," Acta Metall. Sin. Vol.40. 2004; 827 - 832.
Wang F, Xiong B.Q, and Zhang Y.G, "Age-hardening characteristic of an Al–Zn–Mg–Cu alloy produced by spray deposition," Rare Met. Vol. 26. 2007; 163–168.
Hui Zhang, Yusong He and Luoxing Li, "Tensile deformation and fracture behavior of spray-deposition 7075/15SiCp aluminum matrix composite sheet at elevated temperatures," Mater Character. Vol. 59. 2008; 1078–1082
Frank Su Y.H, Chen Y.C, and Chi Y.A. Tsao, "Workability of spray-formed 7075 Al alloy reinforced with SiCp at elevated temperatures," Mater. Sci. Eng. A. Vol.364. 2004; 296–304.
Yi Liu, Rui Hu, Jinshan Li, Hongchao Kou, Hongwei Li, Hui Chang, and Hengzhi Fu, "Characterization of hot deformation behavior of Haynes230 by using processing maps," J Mater Process Tech.Vol.209. 2009; 4020–4026.
Prasad Y.V.R.K, "Processing maps: a status report," J Mater Eng Perform. Vol.12. 2003; 638–645.
Narayana Murty S.V.S, Nageswarra Rao B, and Kashyap B.P, "Identification of flow instabilities in the processing maps of AISI 304 stainless steel," J Mater Process Tech. Vol.166. 2005; 268–278.
Raj R, "Development of a processing map for use in warm-forming and hot-forming process," Metall. Trans. A. Vol. 12. 1981; 1089-1099.
Lin Y.C, "Ming-Song Chen, and Jue Zhong, "Prediction of 42CrMo steel flowstress at high temperature and strain rate," Mech. Res. Commun., Vol. 35(3), 2008; 142-150.
Seshacharyulu T, Medeiros S.C, Morgan J.T, Malas J.C, Frazier W.G and Prasad Y.V.R.K, "Hot deformation and microstructural damage mechanisms in extra-low interstitial (ELI) grade Ti–6Al–4V," Mater. Sci. Eng. A, Vol. 279, 2000; 289-298.
Prasad, Y.V.R.K; Sasidhara, S (Eds.), "Hot Working Guide: A Compendium of Processing Maps", ASM International, Materials Park, OH, 1997.
Prasad Y.V.R.K and Rao K.P, "Processing maps and rate controlling mechanisms of hot deformation of electrolytic tough pitch copper in the temperature range 300–950 ◦C," Mater. Sci. Eng. A, Vol.391, 2005; 141-150.
Sivakesavam O and Prasad Y.V.R.K, "Hot deformation behaviour of as-cast Mg–2Zn–1Mn alloy in compression a study with processing map," Mater. Sci. Eng. A, Vol. 362, 2003; 118–124.
Prasad Y.V.R.K and Rao K.P, "Processing maps for hot deformation of rolled AZ31 magnesium alloy plate: Anisotropy of hot workability," Mater. Sci. Eng. A, Vol.487, 2008; 316. –327
Guoliang Ji, Fuguo Li, Qinghua Li, Huiqu Li and Zhi Li, "Development and validation of a processing map for Aermet100 steel," Mater. Sci. Eng. A, Vol.527, 2010; 1165–1171.
Murr L.E and Esquivel E.V, "Observations of common microstructural issues associated with dynamic deformation phenomena: Twins, microbands, grain size effects, shear bands, and dynamic recrystallization," Mater .Sci., Vol.39, 2004; 1153–1168.
Srinivasan N, Prasad Y.V.R.K, and Ramarao P, "Hot deformation behaviour of Mg–3Al alloy—A study using processing map," Mater. Sci. Eng. A, Vol.476, 2008; 146-156.
Ceschini L., Minak G., and Morri A, "Forging of the AA2618/20 vol.% Al2O3p composite: Effects on microstructure and tensile properties," Comp. Sci. Technol, Vol.69, 2009; 1783–1789.
Ramanathan S., Karthikeyan R., and Manoj Gupta, "Development of processing maps for Al/SiCp composite using fuzzy logic," J Mater Process Tech, Vol.183, 2007; 104–110.
Venugopal S., Venugopal P., and Mannan S.L, "Optimisation of cold and warm workability of commercially pure titanium using dynamic materials model (DMM) instability maps," J Mater Process Tech, Vol.202, 2008; 201–215.
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