Affiliation: | (1) Technical Research Laboratories, Pohang Iron & Steel Co., Ltd., 699 Keumho-dong, Kwangyang, 545-090, Korea;(2) Kwangyang Steel Works, Pohang Iron & Steel Co., Ltd., 699 Keumho-dong, 545-090 Kwangyang, Korea;(3) Department of Metallurgical Engineering, Pusan National University, San 30 Changjeon-dong, Kumjeong-ku, 609-735 Pusan, Korea |