A STUDY OF PHASE TRANSFORMATION IN SHAPE MEMORY ALLOY CuAl9Fe4
Nguyen Duong Nam1, Vu Anh Tuan1,2, Nguyen Hai Yen1, Dao Van Lap1, and Pham Mai Khanh2, *
1Viet Nam Maritime University, Hai Phong City, Viet Nam.
2School of Material Science and Engineering, Ha Noi University of Science and Technology, Ha Noi City, Viet Nam.
*Corresponding author email: firstname.lastname@example.org
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Microstructure and phase transformation in shape memory alloy Cu-Al (Fe addition: 9% Al, 4 % Fe) were investigated in this study. It is a material capable of restoring its original shape when impacted by a reasonable temperature or cyclic stress and production cost is not too expensive. In many years, shape memory alloys (SMA) based on Cu – Fe is considered to be very attractive to industrial and biomedical applications such as cardiovascular, orthopedic, surgery and production of spare parts and jigs. Original alloy exists β martensite and only exists 〖α^’〗_1 (3R)+ 〖β’〗_1(9R) + 〖γ^’〗_(1 ) (2H) which is finely dispersed homogenously in microstructure after finishing shape memory transformation. Shape memory rate obtained 6%-24% corresponding to each deformation angle before the experiment. Phase transformation between these two phases during deformation as well as the heating-cooling process which create the basis for the unique properties of the alloy.