“Effect of Nb Addition on Hardness and Wear Resist of Cu-Al-Ni Shape Memory Alloy Fabricated By Powder Metallurgy”. Journal of Engineering 20, no. 01 (January 1, 2014): 42–49. Accessed July 23, 2024. https://joe.uobaghdad.edu.iq/index.php/main/article/view/1952.