加料方式对制备铝钛硼中间合金的影响  

Effects of Charging Ways on Preparation of Al-Ti-B Intermediate Alloy

作　　者：卢育[1] 杨钢[2] 陈越[2] 汤皓元[2] 

机构地区：[1]昆明理工大学材料科学与工程学院,云南昆明650093 [2]昆明冶金研究院,云南昆明650031

出　　处：《热加工工艺》2014年第7期68-70,共3页Hot Working Technology

基　　金：国家863计划项目(2013AA030803)

摘　　要：采取不同的加料方式来熔制Al-Ti-B中间合金,从Ti、B的直收率、中间合金的化学成分以及微观组织的角度对比,中间合金中TiAl3和TiB2颗粒的分布、形貌及其尺寸大小有较大差异。结果表明,在保证良好的合金成分和合金微观组织的情况下要得到理想的TiAl3和TiB2第二相颗粒,在用氟盐法制备Al-Ti-B中间合金的过程中,应在铝锭熔化后先加入K2TiF6后再加入KBF4。Al-Ti-B master alloys were prepared by taking different charging ways. The direct recovery of Ti, B, chemical composition of master alloy and microstructure were compared. The distribution, morphology and sizes of TiAl3 and TiB2 intermediate alloy particles had of a large difference. The results show that under the conditions of the better alloy composition and microstrueture, to get ideal TiAl3 and TiB2 of second phase particles, in the preparation of Al with fluoride salt Al-Ti-B in the process of the intermediate alloy, K2TiF6 should be firstly charged and then KBF4 aluminum melt.

关 键 词：铝钛硼中间合金 合金成分 加料方式 晶粒细化 

分 类 号：TG223[金属学及工艺—铸造]