LSPSF工艺对Al-Si-2Fe合金中富铁相的影响  

Effect of LSPSF Treatment on Iron Intermetallic Phases of Al-Si-2Fe Alloys

作　　者：王言兵[1] 汪丽君 杨湘杰[1] 郭洪民[1] 易光斌[1] 丁良生 

机构地区：[1]南昌大学江西省高性能精确成形重点实验室,江西南昌330031 [2]江西雄鹰铝业股份有限公司,江西南昌330031

出　　处：《铸造》2015年第4期313-316,共4页Foundry

摘　　要：系统研究了剪切低温浇注式半固态浆料制备工艺(LSPSF)对Al-7Si-2Fe合金和Al-17Si-2Fe合金中富铁相形态的影响,结果显示:普通铸造工艺和LSPSF工艺处理过的Al-7Si-2Fe合金中富铁相均是针状的β-Al5Fe Si相;普通铸造工艺处理的Al-17Si-2Fe合金中富铁相有针状的β-Al5Fe Si相和块状的δ-Al4Fe Si2相,然而经过LSPSF工艺处理富铁相有块状的δ-Al4Fe Si2相和少量的α-Al12Fe3Si2相。文中还讨论了LSPSF工艺对富铁相形态的影响机理。The effect of low superheat pouring with a shear field （LSPSF） process treatment on the morphological change of iron intermetallic phases in the hypereutectic Al-17Si-2Fe alloy and hypoeutectic Al-7Si-2Fe alloy were systematically studied. The results show that, both common casting treatment and LSPSF treatment the rich iron phases are mainly composed of acicular β-Al5FeSi phase in Al-7Si-2Fe alloy. In the Al-17Si-2Fe alloy, the rich iron phases mainly contain acicular β-AlsFeSi phase and 8-Al4FeSi2 phase. After LSPSF process treatment, the rich iron phases are refined and exist 8-Al4FeSi2 phase and a small amount of α-Al12Fe3Si2 phase. The mechanism of LSPSF treatment on the morphology of rich iron phase was also discussed.

关 键 词：富铁相 LSPSF工艺 铝硅合金 

分 类 号：TG146.21[一般工业技术—材料科学与工程]