Hardness Test on the Alloy Fe-50%atAl With the Addition of Nickel Using Mechanical Alloying Method. JTM [Internet]. 30 April 2017 [dikutip 21 Agustus 2025];7(1):45-9. Tersedia pada: https://jtm.itp.ac.id/index.php/jtm/article/view/499