Acta Metallurgica Sinica (English Letters) ›› 1995, Vol. 8 ›› Issue (3): 226-230.
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ZHA NG Jiongming (Anshan Iron and Steel Research Institute,Anshan, Liaoning, China)HE Jicheng; LI Baokuan (Northeastern University, Shenyang, China)Manuscript received 23 September 1994