Effect of Shape Memory Heat Treatment on Microstructures and Mechanical Properties of Powder Metallurgy TiNi Shape Memory Alloy

2018 ◽  
Vol 2018 (0) ◽  
pp. S0440104
Author(s):  
Ryoichi SOBA ◽  
Yukiko TANABE ◽  
Junko UMEDA ◽  
Katsuyoshi KONDOH
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Powder Metallurgy ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Microstructures And Mechanical Properties

Synthesis of Cu-Ni-Al Shape Memory Alloy by Powder Metallurgy

2018 ◽  
Vol 941 ◽  
pp. 1618-1622 ◽  
Author(s):  
Ayman Elsayed ◽  
Rabab Ibrahim ◽  
Mohamed Bahlol ◽  
Osama Dawood
Keyword(s):  
Heat Treatment ◽  
Powder Metallurgy ◽  
Shape Memory Alloy ◽  
Mechanical Alloying ◽  
Shape Memory ◽  
Transformation Temperature ◽  
Sintering Temperature ◽  
Al Alloy ◽  
Synthesis Route ◽  
Ar Gas

Synthesis of Cu-Ni-Al alloy has been realized by powder metallurgy. Mechanical alloying was used to produce shape memory alloy consisting of Cu, x Al, and 5wt, % Ni to study the effect of using the aluminum ratios of 12.5, 13, and 13.5 wt.% and sintering temperature on the transformation temperature. The process to obtain the alloy has included cold compaction at 600 MPa, Ar Gas sintering at 950 °C, die forging at 900 °C under the pressure of 500 MPa, and heat treatment at 850 °C followed by water quenching. The results have shown that the proposed synthesis route could be used to obtain the alloy with proper transformation and metallurgical properties.

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