Acta Metallurgica Sinica (English Letters) ›› 1997, Vol. 10 ›› Issue (6): 523-526.
• Research paper • Previous Articles Next Articles
P. Zhang;J.Z. Cui; Y.H. Du and Q.Z. Zhang(Department of Metal Forming, Northeastern University, Shenyang 110006, China)(Department of Mining, Northeastern University, Shenyang 110006, China)