特种铸造及有色合金
特種鑄造及有色閤金
특충주조급유색합금
SPECIAL CASTING & NONFERROUS ALLOYS
2010年
3期
273-275
,共3页
梁国萍%苏勇%刘福东%孙林%章高伟%王爱珍%金梅
樑國萍%囌勇%劉福東%孫林%章高偉%王愛珍%金梅
량국평%소용%류복동%손림%장고위%왕애진%금매
过共晶Al-Si合金%P+RE复合变质%微观组织%变质机理
過共晶Al-Si閤金%P+RE複閤變質%微觀組織%變質機理
과공정Al-Si합금%P+RE복합변질%미관조직%변질궤리
Hypereutectic Al-Si Alloy%P+RE Modification%Microstructure%Modification Mechanism
采用P+RE对过共晶Al-Si合金进行复合变质.结果表明,P+RE复合变质对初晶硅和共晶硅均有很好的变质效果.五心瓣状初晶Si尺寸明显减小且棱角钝化,共晶Si由原来的长针状变为短杆状,微观组织得到明显的细化.同时也对P+RE的变质机理进行了论述.
採用P+RE對過共晶Al-Si閤金進行複閤變質.結果錶明,P+RE複閤變質對初晶硅和共晶硅均有很好的變質效果.五心瓣狀初晶Si呎吋明顯減小且稜角鈍化,共晶Si由原來的長針狀變為短桿狀,微觀組織得到明顯的細化.同時也對P+RE的變質機理進行瞭論述.
채용P+RE대과공정Al-Si합금진행복합변질.결과표명,P+RE복합변질대초정규화공정규균유흔호적변질효과.오심판상초정Si척촌명현감소차릉각둔화,공정Si유원래적장침상변위단간상,미관조직득도명현적세화.동시야대P+RE적변질궤리진행료논술.
Compound modification of hypereutectic Al-Si alloy was conducted by adding P+RE. The results indicate that P+RE compound modification has excellent effects on both primary Si and eutectic Si phases. Rosette primary Si size is greatly refined with the passivation of edges, and eutectic Si phase is converted from acicular structure into short-rod ones. The modification mechanism of P+RE on hypereutectic Al-Si alloy was described.
