不同添加物对铸造铝及铝合金晶粒细化的影响-应用生态学报.PDF

25 3 矿　冶　工　程 V l.25 №3 2005 06 MINING AND METALLURGICAL ENGINEERING June 2005 ① 何建军, 陈振华, 吴有伍 ( , 410082) 　:。Al-Ti-B、Al-Ti-C、Al-Ti-C-B Al-Ti-B-Re , , , 。, , , 。 :;; :TG113.1 :A :0253-6099 (2005)03-0081-04 Influences of Different Additives on Refinement of Cast Aluminum and Aluminum Alloys HE Jian-jun, CHEN Zhen-hua, WU Y u-wu (Materials Science and Technology College of Hunan University , Changsha 410082,Hunan, China ) Abstract :The latest techn l gy f r grain refinement and its mechanisms were intr duced.Several refiner such as Al-Ti-B、Al- Ti-C、Al-Ti-C-B and Al-Ti-B-Re can refine the grains f aluminum and aluminum all ys effectively and be widely used.As the refiners c ntain elements which are absent in the all y melt, their refining effects tend t decay and the all y may be c ntami- nated.The elements in the refiner used in nan -crystal nucleati n pr cess are as same as th se in the all y melt.In s lid-liq- uid mixed casting pr cess a l t f all y p wders with same c mp siti ns as the all y melt were added t the melt.B th the pr - cesses have perfect grain refining effects and applicati n values. Key words:p wder;grain refiner;s lid-liquid mixed casting 　　, , 。 ,。 , (、、) 。、 。, 、, , 、。 。 ,, , , ,。 , ,, 。 ,, , 1　 。, , ——— [1～2] 。, , , 。