Skip to content
Licensed Unlicensed Requires Authentication Published by De Gruyter November 29, 2018

Microstructural evolution and mechanical properties of thixoformed 7075 aluminum alloy prepared by conventional and new modified SIMA processes

Behzad Binesh , Mehrdad Aghaie-Khafri , Mehdi Shaban and Ali Fardi-Ilkhchy

Abstract

The microstructural evolution during semi-solid processing and thixoformability of a 7075 alloy prepared by conventional and new modified strain induced melt activation (SIMA) processes were comparatively investigated in this paper. The semi-solid slurries were thixoformed at 600 °C, at which temperature the solid fraction was estimated to be 0.8. The coarsening process of the semi-solid samples was described using Lifshitz–Slyozov–Wagner theory and the effect of pre-deformation on the coarsening kinetics of the solid particles was discussed. The coarsening rate constant of the new modified SIMA sample showed a remarkable decrease compared to that of the conventional SIMA sample. Microstructural and mechanical investigations indicated that the sample with a near-equiaxed microstructure deforms through the plastic deformation of solid grains mechanism. However, the sliding of solid grains and flow of liquid incorporating solid grains mechanisms were dominant in the sample with a globular microstructure. Also, it was observed that the yield and ultimate strengths and hardness of the sample prepared by the new modified SIMA process after thixoforming and T6 heat treatment increased by about 15 %, 10 % and 25 % respectively, compared to those of the conventional SIMA sample.


*Correspondence address, Dr. Behzad Binesh, Department of Materials Science and Engineering, University of Bonab, Postal Code: 5551761167, Bonab, Iran, Tel.: +989141220290, Fax: +984137740800, E-mail:

References

[1] D.Kirkwood: Int. Mater. Rev.39 (1994) 173. 10.1179/095066001225001076Search in Google Scholar

[2] J.Jiang, Y.Wang, X.Nie, G.Xiao: Mater. Des.96 (2016) 36. 10.1016/j.matdes.2016.02.021Search in Google Scholar

[3] X.H.Du, E.L.Zhang, B.L.Wu: Int. J. Mater. Res.98 (2007) 235. 10.3139/146.101457Search in Google Scholar

[4] Z.Fan: Int. Mater. Rev.47 (2002) 49. 10.1179/095066001225001076Search in Google Scholar

[5] B.Rahimi, H.Khosravi, M.Haddad-Sabzevar: Int. J. Min. Met. Mater.22 (2015) 59. 10.1007/s12613-015-1044-8Search in Google Scholar

[6] G.Hirt, R.Kopp: Thixoforming, Semi-solid Metal Processing, Wiley-VCH Verlag Gmbh & Co, Germany (2009) 1. 10.1002/9783527623969Search in Google Scholar

[7] R.Koeune: Semi-solid Constitutive Modeling for the Numerical Simulation of Thixoforming Processes (PhD Thesis), University of Liege (2011).10.1002/9783527632312.ch6Search in Google Scholar

[8] K.Sukumaran, B.C.Pai, M.Chakraborty: Mater. Sci. Eng. A369 (2004) 275. 10.1016/j.msea.2003.11.036Search in Google Scholar

[9] R.Haghayeghi, E.J.Zoqui, A.Halvaee, M.Emamy: J. Mater. Process. Technol.3 (2005) 382. 10.1016/j.jmatprotec.2005.04.071Search in Google Scholar

[10] C.G.Kang, J.W.Bae, B.M.Kim: J. Mater. Process. Technol.187–188 (2007) 344. 10.1016/j.jmatprotec.2006.11.181Search in Google Scholar

[11] M.Hajihashemi, B.Niroumand, M.Shamanian: Metall. Mater. Trans. B45 (2014) 1804. 10.1007/s11663-014-0111-2Search in Google Scholar

[12] E.D.Manson-Whitton, I.C.Stone, J.R.Jones, P.S.Grant, B.Cantor: Acta Mater.50 (2002) 2517. 10.1016/S1359-6454(02)00080-0Search in Google Scholar

[13] M.Baygan, R.Gholamipour, F.Shahri, Int. J. Mater. Res.106 (2015) 235. 10.3139/146.111264Search in Google Scholar

[14] R.G.Guan, Z.Y.Zhao, H.Zhang, T.Cui, C.S.Lee: Mater. Sci. Eng. A559 (2013) 194. 10.1016/j.msea.2012.08.079Search in Google Scholar

[15] J.-L.Fu, K.-K.Wang, X.-W.Li, H.-K.Zhang: Int. J. Min. Met. Mater.23 (2016) 1404. 10.1007/s12613-016-1364-3Search in Google Scholar

[16] M.Karamouz, M.Alizadeh, A.Ahmadi: Int. J. Mater. Res.108 (2017) 1073. 10.3139/146.111558Search in Google Scholar

[17] M.J.Nayyeri, D.F.Haghshenas: Mater. Sci. Technol.30 (2014) 348. 10.1179/1743284713Y.0000000373Search in Google Scholar

[18] K.P.Young, C.P.Kyonka, J.A.Courtois: Fine grained metal composition, US Patent 4 415 374, 1983.Search in Google Scholar

[19] C.T.W.Proni, L.V.Torres, R.Haghayeghi, E.J.Zoqui: Mater. Charact.118 (2016) 252. 10.1016/j.matchar.2016.06.002Search in Google Scholar

[20] R.Meshkabadi, G.Faraji, A.Javdani, V.Pouyafar: Trans. Nonferrous Met. Soc. China, 26 (2016) 3091. 10.1016/S1003-6326(16)64441-2Search in Google Scholar

[21] J.Jiang, Y.Wang, and Sh. Luo: Mater. Charact.58 (2007) 190. 10.1016/j.matchar.2006.04.017Search in Google Scholar

[22] Z.D.Zhao, Q.Chen, Z.J.Tang, C.K.Hu: J. Alloys Compd.497 (2010) 402. 10.1016/j.jallcom.2010.03.088Search in Google Scholar

[23] G.Yan, Sh. Zhao, Sh. Ma, H.Shou: Mater. Charact.69 (2012) 45. 10.1016/j.matchar.2012.04.005Search in Google Scholar

[24] Ch.-P.Wang, H.Mei, R.Li, D.Li, L.Wang, J.Liu, Z.Hua, L.Zhao, F.Pen, H.Li: Acta Metall. Sin.26 (2013) 149. 10.1007/s40195-012-0169-2Search in Google Scholar

[25] Q.Chen, Z.Zhao, Z.H.Zhao, C.H.Hu, D.Shu: J. Alloys Compd.509 (2011) 7303. 10.1016/j.jallcom.2011.04.113Search in Google Scholar

[26] B.Binesh, M.Aghaie-Khafri: Mater. Des., 95 (2016) 268. 10.1016/j.matdes.2016.01.117Search in Google Scholar

[27] B.Binesh, M.Aghaie-Khafri: Mater. Res. Express4 (2017) 1. 10.1088/2053-1591/aa8272Search in Google Scholar

[28] H.V.Atkinson, K.Burke, G.Vaneetveld: Mater. Sci. Eng. A490 (2008) 266. 10.1016/j.msea.2008.01.057Search in Google Scholar

[29] ASM Handbook, Alloy phase diagrams, Volume 3 ASM International, Materials Park, OH (2004).Search in Google Scholar

[30] J.Jiang, Y.Wang, X.Nie, G.Xiao: Mater. Des.96 (2016) 36. 10.1016/j.matdes.2016.02.021Search in Google Scholar

[31] E.Tzimas, A.Zavaliangos: Mater. Sci. Eng. A289 (2000) 228. 10.1016/S0921-5093(00)00908-4Search in Google Scholar

[32] T.Werz, M.Baumann, U.Wolfram, C.E.Krill: Mater. Charact.90 (2014) 185. 10.1016/j.matchar.2014.01.022Search in Google Scholar

[33] Q.Q.Zhang, Z.Y.Cao, Y.F.Zhang, G.H.Su, Y.B.Liu: J. Mater. Process. Technol., 184 (2007) 195. 10.1016/j.jmatprotec.2006.11.022Search in Google Scholar

[34] J.Jiang, Y.Wang, G.Xiao, X.Nie: J. Mater. Process. Technol.238 (2016) 361. 10.1016/j.jmatprotec.2016.06.020Search in Google Scholar

[35] A.Bolouri, M.Shahmiri, C.G.Kang: J. Mater. Sci.47 (2012) 3544. 10.1007/s10853-011-6200-6Search in Google Scholar

[36] H.Mohammadi, M.Ketabchi, A.Kalaki: J. Mater. Eng. Perform.20 (2011) 1256. 10.1007/s11665-010-9762-6Search in Google Scholar

[37] Ch.-P.Wang, Z.-J.Tang, H.-Sh.Mei, L.Wang, R.-Q.Li, D.-F.Li: Rare Metals34 (2015) 710. 10.1007/s12598-013-0123-0Search in Google Scholar

[38] A.Bolouri, M.Shahmiri, E.N.H.Cheshmeh: Trans. Nonferrous Met. Soc. China20 (2010) 1663. 10.1016/S1003-6326(09)60355-1Search in Google Scholar

[39] J.FU, Y.Wang, K.Wang, X.Li: Solid State Phenom.256 (2016) 294. 10.4028/www.scientific.net/SSP.256.294Search in Google Scholar

[40] E.Tzimas, A.Zavaliangos: Acta Mater.47 (1999) 517. 10.1016/S1359-6454(98)00356-5Search in Google Scholar

[41] J.Wang, Sh. Shang, G.Lu, J.Yu: Int. J. Mater. Res.104 (2013) 255. 10.3139/146.110858Search in Google Scholar

[42] B.Clarke: Trans. Inst. Chem. Eng. Chem. Eng.45 (1967) 251.10.1021/cen-v045n045.p082Search in Google Scholar

[43] C.P.Chen, C.Y.A.Tsao: Acta Mater.45 (1997) 1955. 10.1016/S1359-6454(96)00312-6Search in Google Scholar

[44] H.Lianxi, L.Yuping, W.Erde, Y.Yang: Mater. Sci. Eng. A422 (2006) 327. 10.1016/j.msea.2006.02.014Search in Google Scholar

Received: 2018-04-21
Accepted: 2018-06-28
Published Online: 2018-11-29
Published in Print: 2018-12-10

© 2018, Carl Hanser Verlag, München

Downloaded on 9.12.2022 from https://www.degruyter.com/document/doi/10.3139/146.111710/html
Scroll Up Arrow