Abstract
The ZL108 Al-Si alloy containing rare earth was melted with a CO2 2 kW laser. The maximum microhardness values of the laser-melted zone (LMZ) was shifted back by 2 h in the microhardness-time curve and 20 °C in the microhardness-temperature curve, as compared with conventional treatment materials in the given range. The LMZ had better structural stability at the elevated temperature than that of the conventional materials. Stacking faults were found in the resolidified aluminium, and were identified to be intrinsic. Both structural stability and the existence of the stacking faults were related to Ce supersaturation in the resolidified aluminium.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
A. Munitz,Metall. Trans. 16B (1985) 149.
J. M. Brown andJ. A. Sekhar,ibid. 15A (1984) 29.
Hu Jiandong, Liu Yongbing andLi Zhang,J. Mater. Sci. Lett. 9 (1990) 587.
C. W. Draper,J. Metals 34 (1982) 24.
H. Hashimoto, A. Honie andM. J. Whelan,Proc. R. Soc. A 269 (1962) 80.
Hu Jiandong andLi Zhang,Trans. Met. Heat Treat. 10 (1989) 95 (in Chinese).
Idem, Rare Earth 3 (1987) 7 (in Chinese).
M. G. Scott andJ. A. Leake,Acta Metall. 23 (1975) 503.
P. R. Thornton, T. E. Michell andP. B. Hirsh,Phil. Mag. 7 (1962) 1349.s
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Jiandong, H. Structural stability and stacking faults in a laser-melted ZL108 Al-Si alloy containing rare earth. J Mater Sci 27, 671–674 (1992). https://doi.org/10.1007/BF00554034
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00554034