中国有色金属学报（英文版）
中國有色金屬學報（英文版）
중국유색금속학보（영문판）
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
2012年
6期
1280-1285
,共6页
A8006合金%双辊激冷铸造%均匀化%微观组织
A8006閤金%雙輥激冷鑄造%均勻化%微觀組織
A8006합금%쌍곤격랭주조%균균화%미관조직
A8006 alloy%twin-roll casting%homogenization%microstructure
通过SEM、XRD与硬度测定研究均匀化过程对双辊激冷铸造(TRC)与直接冷却铸造(DC)A8006合金的微观组织和性能的影响.结果表明,随着TRC合金微观组织的细化,均匀化后合金中的共晶相进一步细化.DC合金均匀化后其共晶相形态相似于TRC合金中的共晶相形态.均匀化后,合金共晶相中的Fe、Mn元素均匀地扩散到铝基体中,引起合金硬度的降低.TRC合金的成形性能优于均匀化的DC合金,所以,对于TRC A8006合金的后续加工过程可省去均匀化过程.
通過SEM、XRD與硬度測定研究均勻化過程對雙輥激冷鑄造(TRC)與直接冷卻鑄造(DC)A8006閤金的微觀組織和性能的影響.結果錶明,隨著TRC閤金微觀組織的細化,均勻化後閤金中的共晶相進一步細化.DC閤金均勻化後其共晶相形態相似于TRC閤金中的共晶相形態.均勻化後,閤金共晶相中的Fe、Mn元素均勻地擴散到鋁基體中,引起閤金硬度的降低.TRC閤金的成形性能優于均勻化的DC閤金,所以,對于TRC A8006閤金的後續加工過程可省去均勻化過程.
통과SEM、XRD여경도측정연구균균화과정대쌍곤격랭주조(TRC)여직접냉각주조(DC)A8006합금적미관조직화성능적영향.결과표명,수착TRC합금미관조직적세화,균균화후합금중적공정상진일보세화.DC합금균균화후기공정상형태상사우TRC합금중적공정상형태.균균화후,합금공정상중적Fe、Mn원소균균지확산도려기체중,인기합금경도적강저.TRC합금적성형성능우우균균화적DC합금,소이,대우TRC A8006합금적후속가공과정가성거균균화과정.
Microstructure and hardness of twin-roll casting (TRC) process and direct-chill casting (DC) for A8006 alloy with and without homogenization were investigated by means of scanning electron microscopy (SEM),X-ray diffraction analysis and Vickers hardness measurement.The results show that the eutectic phase of the homogenized TRC alloy becomes fine as the microstructure of the as-cast TRC alloy is refined.The short rodlike eutectic phase of the as-cast TRC alloy is dispersed homogeneously,which is similar to the morphology of eutectic phase of the homogenized DC alloy.After homogenization,elements Fe and Mn in DC and TRC alloys are diffused from eutectic phase to Al matrix,resulting in the decrease of microhardness.The formability of the as-cast TRC alloy is superior to that of the homogenized DC alloy.For TRC A8006 alloy,the homogenizing cycle can be removed from the subsequent processing.
