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RELATIONSHIP BETWEEN METASTABLE EXTENSION OF SOLID SOLUBITY OF EUTECTIC SYSTEMS AND PHASE DIAGRAM

RELATIONSHIP BETWEEN METASTABLE EXTENSION OF SOLID SOLUBITY OF EUTECTIC SYSTEMS AND PHASE DIAGRAM
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摘要 A criterion of the metastable extension of solid solubility was proposed.When the eutectic concentration arm ratio parameter of an alloy,J>10,the hypereutectic extension and the metastable solid solubility limit beyond eutectic concentration may be obtained.When J≤10, the hypoeutectic extension may be obtained.The extension parameter,C_(eq)~s/C_(cu),is directly proportional to the parameter J.Thus,it seems easy to predict the tendency of the solid solu- hility extension under rapid solidification on the basis of the eutectic phase diagram. A criterion of the metastable extension of solid solubility was proposed.When the eutectic concentration arm ratio parameter of an alloy,J>10,the hypereutectic extension and the metastable solid solubility limit beyond eutectic concentration may be obtained.When J≤10, the hypoeutectic extension may be obtained.The extension parameter,C_(eq)~s/C_(cu),is directly proportional to the parameter J.Thus,it seems easy to predict the tendency of the solid solu- hility extension under rapid solidification on the basis of the eutectic phase diagram.
出处 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 1989年第7期8-12,共5页 金属学报(英文版)
关键词 eutectic system solid solubility extension phase diagram eutectic system solid solubility extension phase diagram
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