Creep of Rheocast 7075 Aluminum Alloy at 300 °C

Saravut Thongkam; Sirikul Wisutmethangoon; Jessada Wannasin; Suchart Chantaramanee; Thawatchai Plookphol

doi:10.4028/www.scientific.net/AMM.372.288

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 372Creep of Rheocast 7075 Aluminum Alloy at 300 °C

Creep of Rheocast 7075 Aluminum Alloy at 300 °C

Abstract:

Creep of rheocast 7075-T6 aluminum alloy produced by the Gas Induced Semi-Solid (GISS) process was investigated at temperature of 300 °C and stress range of 20-70 MPa and compared to that of wrought 7075-T651 aluminum alloy. The rheocast 7075-T6 alloy exhibited lower minimum creep rate and longer rupture time than the wrought 7075-T651 alloy. The total rupture strain of the rheocast alloy was shorter than that of the wrought one. According to the power law creep, the stress exponents, n of the rheocast 7075-T6 and the wrought 7075-T651 alloys were 5.9 and 7.9 respectively. Based on the determined n values, the creep deformation of both alloys was possibly controlled by the dislocation glide and climb-controlled mechanism.

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Applied Mechanics and Materials (Volume 372)

Pages:

288-291

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.372.288

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Online since:

August 2013

Authors:

Saravut Thongkam, Sirikul Wisutmethangoon, Jessada Wannasin, Suchart Chantaramanee, Thawatchai Plookphol

Keywords:

7075 Aluminum Alloy, Creep, Gas Induced Semi-Solid, GISS, Rheocast, Semi-Solid

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References

[1] H. Guo, X. Yang, J. Wang, B. Hu, G. Zhu, Effects of rheoforming on microstructures and mechanical properties of 7075 wrought aluminum alloy, Trans. Nonferrous Met. Soc. China. 20 (2010) 355-60.

DOI: 10.1016/s1003-6326(09)60146-1

Google Scholar

[2] S. Janudom, T. Rattanochaikul, R. Burapa, S. Wisutmethangoon, J. Wannasin, Feasibility of semi-solid die casting of ADC12 aluminum alloy, Trans. Nonferrous Met. Soc. China 20 (2010) 1756-1762.

DOI: 10.1016/s1003-6326(09)60370-8

Google Scholar

[3] U.A. Curle, G. Govender, Semi-solid rheocasting of grain refined aluminum alloy 7075, Trans. Nonferrous Met. Soc. China 20 (2010) 832-836.

DOI: 10.1016/s1003-6326(10)60590-0

Google Scholar

[4] J. Wannasin, S. Janudom, T. Rattanochaikul, R. Canyook, R. Burapa, T. Chucheep, S. Thanabumrungkul, Research and development of gas induced semi-solid process for industrial applications, Trans. Nonferrous Met. Soc. China 20 (2010) 1010-1015.

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

Google Scholar

[5] J.C. Williams, E.A. Starke, Progress in structural materials for aerospace systems, Acta Mater. 51 (2003) 5775-5799.

Google Scholar

[6] N. Mahathaninwong, T. Plookphol, J. Wannasin, S. Wisutmethangoon, T6 heat treatment of rheocasting 7075 Al alloy, Mater. Sci. Eng. A 532 (2012) 91-99.

DOI: 10.1016/j.msea.2011.10.068

Google Scholar

[7] N. Mahathaninwong, Y. Zhou, S.E. Babcock, T. Plookphol, J. Wannasin, S. Wisutmethangoon, Creep rupture behavior of semi-solid cast 7075-T6 Al alloy, Mater. Sci. Eng. A (556) 2012 107-113.

DOI: 10.1016/j.msea.2012.06.064

Google Scholar

[8] S. Spigarelli, Creep of aluminum and aluminum alloys, TALAT Lecture 1253, European Aluminium Association, Italy, (1999).

Google Scholar

[9] V. Srivastava, J.P. Williams, K.R. McNee, G.W. Greenwood, H. Jones, Low stress creep behaviour of 7075 high strength aluminium alloy, Mater. Sci. Eng. A 382 (2004) 50-56.

DOI: 10.1016/j.msea.2004.04.047

Google Scholar