Optimization of wear parameters for ECAP-processed ZK30 alloy using response surface and machine learning approaches: a comparative study oleh Mahmoud Shaban, Fahad Nasser Alsunaydih, Hanan Kouta, Samar El-Sanabary, Abdulrahman Alrumayh, Abdulrahman I. Alateyah, Majed O. Alawad, Waleed H. El-Garaihy, Yasmine El-Taybany