The creep behaviour of rheo-diecast AZ91D (Mg-9Al-1Zn) alloy

Content Provider	Semantic Scholar
Author	Ji, Shouxun Qian, Ma Fan, Zhongyun
Copyright Year	2006
Abstract	The creep behaviour of a commercial AZ91D (Mg–9Al–1Zn) alloy processed by rheo-diecasting has been investigated in the as-cast, partial solution treated, and complete solution treated conditions, in the temperature range from 150 to 180 °C and the stress range from 40 to 100 MPa. The results confirm that solution treatment is applicable to AZ91D processed by rheo-diecasting due to the high integrity achieved. It is shown that solution treatment can largely decrease the minimum creep rate and extend the constant creep rate range of rheo-diecast AZ91D. The best-fit stress exponent is found to be around 5 in the as-cast, partial solution treated, and complete solution treated conditions, indicating that the mechanism for creep in rheo-diecast AZ91D is controlled by dislocation climb. The elimination of the β-Mg17Al12 phase from the microstructure of AZ91D by solution treatment does not obviously affect the mechanism for creep in rheo-diecast AZ91D. This suggests that the β-Mg17Al12 phase does not play a critical role in the determination of the mechanism for creep in rheo-diecast AZ91D.
Starting Page	7
Ending Page	12
Page Count	6
File Format	PDF HTM / HTML
DOI	10.1016/j.msea.2006.07.045
Volume Number	434
Alternate Webpage(s)	https://www.brunel.ac.uk/__data/assets/pdf_file/0009/295164/S-Ji-2006-No-5-AZ91-creep-short.pdf
Alternate Webpage(s)	https://doi.org/10.1016/j.msea.2006.07.045
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article