Effects of Specimen Diameter on Microstructure and Microhardness of Hot Extruded AZ31B Magnesium Alloy

Abstract:

Microstructures of metal micro parts after microforming at elevated temperatures must be evaluated due to mechanical properties depend on average grain size. In this work, the effects of specimen diameter on the microstructure and microhardness of a hot-extruded AZ31B magnesium alloy were studied. Obvious size effect on microstructure and microhardness of the alloy could be observed. The size effects could be explained by strain distribution and dislocation density differences between the two kinds of specimens.

• Periodical: Advanced Materials Research (Volumes 1004-1005)
• Pages: 158-162
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1004-1005.158
• Online since: August 2014
• Authors: Xiang Ting Hong*, Fu Chen, Fei Chen, Wang Yu, Bo Rong Sang, Xin Ping Zhang
• Keywords: Hot-Extruded, Magnesium Alloy, Microhardness, Microstructure, Size Effect

References

[1] S. Wang, Y. Yang, L.M. Zhou, Y.W. Mai: J. Mater. Sci. Vol. 47 (2012), p.6047.

[2] H.D. Espinosa, B.C. Prorok: J. Mater. Sci. Vol. 38 (2003), p.4125.

[3] B. Eichenhueller, E. Egerer, U. Engel: Int. J. Adv. Manuf. Technol. Vol. 33 (2007), p.119.

[4] X. P. Zhang, Z P Zhao, F M Wu : J. Mater. Sci. Vol. 4 2(2007), p.8523.

[5] X.P. Zhang, S. Castagne, C.F. Gu, X.F. Luo: J. Mater. Sci. Vol. 46 (2011), p.1124.

[6] X.P. Zhang, T.H. Yang, J.Q. Liu, X.F. Luo, J.T. Wang: J. Mater. Sci. Vol. 45(2010), p.3457.

[7] X.P. Zhang, T.H. Yang, S. Castagne, J.T. Wang: Mater. Des. Vol. 32 (2011), p.1152.

[8] X.P. Zhang, T.H. Yang, S. Castagne, J.T. Wang: Mater. Des. Vol. 32 (2011), p.2239.

[9] X.P. Zhang, S.F. Feng, X.T. Hong, J.Q. Liu : Mater. Des. Vol. 46 (2013), p.256.

[10] F.O. Sonmez, A. Demir: J. Mater. Process. Technol. Vol. 186 (2007), p.163.