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Influence of valence electron structures of phase and biphase interfaces of sulfides on hot brittleness in steel 被引量:7

Influence of valence electron structures of phase and biphase interfaces of sulfides on hot brittleness in steel
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摘要 This paper calculates the electron structures of phase of FeS, MnS and their biphase interface electron structures with austenite in steel. The precipitation and the transformation of FeS and MnS are investigated through studying the valence electron pair numbers on the strongest bond n A with the structure formation factor S. The continuity of electron density and its relation with stress are explored in the biphase interfaces with the electron density difference απ Using n A, S, απ we explain the reason why FeS can bring about hot brittleness in steel and the physical mechanism why MnS may eliminate or inhibit hot brittleness, based on which satisfying results are obtained by calculating several rare-earth sulfides.
出处 《Science China(Technological Sciences)》 SCIE EI CAS 2004年第4期488-504,共17页 中国科学(技术科学英文版)
基金 the Natural Science Foundation of Liaoning,China (Grant No. 20022150) the National Natural Science Foundation of China (Grant No. 50271030).
关键词 VALENCE electron structure sulfide HOT brittleness and RARE earth. valence electron structure sulfide hot brittleness and rare earth
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