Influence of Solution Heat Treatment on Microstructures of Semisolid Cast 7075 Aluminium Alloy

Narissara Mahathaninwong; Sirikul Wisutmethangoon; Thawatchai Plookphol; Jessada Wannasin

doi:10.4028/www.scientific.net/AMR.339.371

Paper Titles

Thermal Elastoplastic Behavior of Dispersion Nuclear Fuel Elements
p.353

Optimal Planning for Product Blending
p.358

Material Examination of a Broken Bolt
p.362

Surface Electrical Resistances Properties of CNF/PC Nano-Composite Processing by Injection Molding
p.367

Influence of Solution Heat Treatment on Microstructures of Semisolid Cast 7075 Aluminium Alloy
p.371

Study on Intermediate Frequency Spot Welding Process of Hot Stamping High Strength Steel
p.375

Theoretical and Experimental Research on Perforation Remnant Energy
p.379

A Logistics and Location Decisions Model for a Closed-Loop Logistic System with Uncertain Demands
p.386

The Study on Assessment Index System of ERP Implementation Competence Maturity in China
p.391

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 339Influence of Solution Heat Treatment on...

Influence of Solution Heat Treatment on Microstructures of Semisolid Cast 7075 Aluminium Alloy

Abstract:

Influence of temperature and time of solution heat treatment on the microstructures of rheo-casting 7075 aluminium alloy produced by a novel technique, the Gas Induced Semi Solid (GISS) technique, had been investigated in this study. The microstructure of the as-cast specimens mainly consisted of matrix-α (Al) and grain boundary (GB)-eutectic phase (α-Al + Mg(Zn,Cu,Al)₂). After solution heat treatment at 480 °C for 1 h, MgZn2 phase at the grain boundary was observed to have dissolved and coarse black particles of Mg₂Si were observed to form in the matrix. In comparison, when solutionizing temperature of 450 °C was applied, it took 4 h of solution treatment time in order to dissolve the same portion of GB phase and MgZn₂ phase, and coarse black particles of Mg₂Si were found to form in the 8 h solution treated sample.

You might also be interested in these eBooks

Advanced Manufacturing Systems, ICMPMT 2011

View Preview

Info:

Periodical:

Advanced Materials Research (Volume 339)

Pages:

371-374

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.339.371

Citation:

Cite this paper

Online since:

September 2011

Authors:

Narissara Mahathaninwong, Sirikul Wisutmethangoon, Thawatchai Plookphol, Jessada Wannasin

Keywords:

7075 Al-Alloy, Gas Induced Semi Solid (GISS) Technique, Solution Heat Treatment

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] C.R. Brooks, Principles of heat treating of nonferrous alloys, in : S.M. Copley, E.L. Langer, ASM handbook: Heat treating ,Vol.4, ASM International, USA, 1991, pp.1876-1879.

Google Scholar

[2] A. K. Mukhopadhyay, Trans. Indian Inst. Met. 62 (2009) 113-122.

Google Scholar

[3] J. Wannasin, S. Janudom, T. Rattanochaikul, R. Canyook, R. Burapa, T. Chucheep and S. Thanabumrungkul, Trans. Nonferr. Met. Soc. China. 20 (2010) s1010-s1015.

DOI: 10.1016/s1003-6326(10)60622-x

Google Scholar

[4] Y-L.Deng, L.Wan, L.-H.Wu, Y.-Y.Zhang, X.-M.Zhang, J. Mater. Sci. 46 (2010) 875-881.

Google Scholar

[5] A. R. Eivani, H. Ahmed, J. Zhou, J. Duszczyk, Metall. Mater. Trans. A. 40A (2009) 717-728.

Google Scholar

[6] K.Chena, H.Liu, Z.Zhang, S.Li, R.I. Todd, J. Mater. Process.Technol. 142 (2003) 190-196.

Google Scholar

[7] N. M. Doroshenko, B. V. Ovsyannikov, V. M. Zamyatin, V. I. Popov, Met. Sci. Heat Treat. 47 (2005) 30-35.

Google Scholar