Grain Refinement of Mg-Y-Zn Alloy by Friction Stir Processing


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Grain refinement of magnesium alloy by Friction Stir Processing (FSP) was investigated. It is assumed that dynamic recrystallization (DRX) is occurred by frictional heat and plastic flow during FSP. This process is the effective method of the grain refinement for light metals. In this study, FSP was conducted to cast Mg alloys for and the difference of the grain refinement by DRX in these alloys was examined. As a result, in comparison with commercial Mg-Al-Zn alloy and Mg-Y-Zn alloy have finer microstructure. The grain size of FSP-ed Mg-Y-Zn alloy was ~1.7 [/m], however, that of AZ31 alloy was 20~30 [/m].



Advanced Materials Research (Volumes 26-28)

Edited by:

Young Won Chang, Nack J. Kim and Chong Soo Lee




T. Morishige et al., "Grain Refinement of Mg-Y-Zn Alloy by Friction Stir Processing ", Advanced Materials Research, Vols. 26-28, pp. 465-468, 2007

Online since:

October 2007




[1] E. Abe, Y. Kawamura, K. Hayashi and A. Inoue: Acta Mater. 50 (2002) p.3845.

[2] Z.Y. Ma, S.R. Sharma, R.S. Mishra: Scripta Mater. 54 (2006) p.1623.

[3] A.H. Feng and Z.Y. Ma: Scripta Mater. 56 (2007) p.397.

[4] T. Morishige, M. Tsujikawa, S. Oki, M. Kamita, S.W. Chung and K. Higashi: Advanced Mater. Res. 15-17 (2007) p.369.

[5] S.H.C. Park, Y.S. Sato, H. Kokawa: J. Mater. Sci. 38 (2003) p.4379.

[6] T. Itoi, T. Seimiya, Y. Kawamura and M. Hirohashi: Mater. Sci. Forum 419 (2003) p.721.

[7] M. Tsujikawa, S.W. Chung, T. Morishige, L.F. Chiang, Y. Takigawa, S. Oki and K. Higashi: Mater. Trans. 48 (2007) p.618.

[8] D.H. Bae, M.H. Lee, K.T. Kim, W.T. Kim, D.H. Kim: J. Alloys and Compounds 342 (2002) p.445.

[9] T. Morishige, M. Tsujikawa, S.W. Chung, S. Oki and K. Higashi: Mater. Sci. Forum 558-559 (2007) p.777.

[10] M. Tsujikawa, S.W. Chung, M. Tanaka, Y. Takigawa, S. Oki and K. Higashi: Mater. Trans. 46 (12) (2005) pp.1-0. 5 1 1. 5 2 2. 5 Grainsize d -1/2 /um 1/2 Fig. 5 Hall-Petch relationship of Mg-Y-Zn and AZ91D FSP-ed Mg-Y-Zn (this work) RS P/M Mg-Y-Zn.


[6] FSP-ed AZ91D (this work) FSW-ed AZ91D.

[5] ● × △.