快速凝固铝钛硼粉末半连续制备  

Semi Continuous Preparation of Rapidly Solidified Al-Ti-B Powder

作　　者：戚民杰 QI Minjie(Microscopic Vision Metal Lab,Baoji Zhengwei Metal Technology Co.,Ltd.,Baoji 721000,China)

机构地区：[1]宝鸡正微金属科技有限公司微观视角金属实验室,陕西宝鸡721000

出　　处：《铸造技术》2021年第4期298-299,共2页Foundry Technology

摘　　要：铝钛硼合金(Al-Ti-B)是较常用的铝合金晶粒细化剂,气雾化快速凝固处理可以提高晶粒细化能力。通过自研小型气雾化装置改造,增加适合铝钛硼丝杆的半连续进料装置,使用高压氩气半连续雾化生产了快速凝固的铝钛硼粉末。结果表明,178μm以下产品占比90%,无明显铝钛相,硼化钛无团聚,钛和硼元素宏观含量与原料相比无明显变化。Al-Ti-B alloy is a commonly used grain refiner for aluminum alloy.The grain refining ability can be improved by gas atomization and rapid solidification.The rapid solidification Al-Ti-B powder was produced by using high pressure argon semi-continuous atomization through the modification of self-developed small gas atomization device and adding a semi-continuous feeding device suitable for Al-Ti-B powder.The results show that the proportion of the products below178μm is 90%,there is no obvious Al-Ti phase,no agglomeration of TiB,and the macroscopic contents of Ti and B have no obvious changes compared with the raw materials.

关 键 词：AL-TI-B合金 铝钛硼 快速凝固 晶粒细化 

分 类 号：TG136[一般工业技术—材料科学与工程] TG243[金属学及工艺—合金]