STUDY ON THE BREAKDOWN OF MILLING BALLS MADE OF 13%Cr WHITE CAST-IRON WORKING IN STRONG ABRASIVE AND CLASH CONDITIONS Journal title: Journal of Mechanical Engineering Research & Developments (JMERD) Authors: Hoang Thi Ngoc Quyen, Nguyen Hong Hai, Vu Viet Quyen, Nguyen Van Bach, Vu Anh Tuan, Nguyen Duong Nam Subject(s):