Journal of Engineering and Applied Sciences
ISSN: Online 1818-7803ISSN: Print 1816-949x
Abstract
Shape memory alloys (Cu+Al+Ni) can be applied in many scientific fields, the alloy is manufactured by Powder Metallurgy (P/M) method. The sintering stage is performed in two stages. The 1st stage is to stabilize the solid phase of the aluminum, this is done by keeping the temperature at the 1st stage at 500°C for 1 h. This is performed, so, as to ensure that the aluminum does not change to a molten state when passing through the 2nd sintering stage at which the alloy is heat treated at 850°C. This research studied the effect of the heat treatment time on shape recovery. The alloy used was [83% Cu-13% Al-4% Ni]. Three different time periods were used for the 1st stage of the heat treatment and they were (0.5, 1.0, 1.5 h) the recovery was treatment time of (1.0 h) then 0.5 h and lastly 1.5 h. Physical tests were also performed to ensure that both martensite and austenite were present. The recovery rates were 80, 25 and 10% , respectively, for the three times to stay samples. This study shows the importance of the amount of time spent on the 1st stage of the sintering process for this type of alloy for the recovery percentage.
How to cite this article:
Ahmed Abdulrasool Ahmed Alkhafaji. Effect of Time Fixing Aluminum (In its Solid State Phase): On Recovery
Rate of a Memory Alloy (Cu, Al, Ni).
DOI: https://doi.org/10.36478/jeasci.2019.516.525
URL: https://www.makhillpublications.co/view-article/1816-949x/jeasci.2019.516.525