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快速凝固铝钛硼粉末半连续制备
Semi Continuous Preparation of Rapidly Solidified Al-Ti-B Powder
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- DOI:
- 作者:
- 戚民杰
QI Minjie
- 作者单位:
- 宝鸡正微金属科技有限公司微观视角金属实验室
Microscopic Vision Metal Lab, Baoji Zhengwei Metal Technology Co., Ltd., Baoji 721000, China
- 关键词:
- Al-Ti-B 合金；铝钛硼；快速凝固；晶粒细化
Al-Ti-B alloy; AlTiB; rapid solidification; grain refinement
- 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，178 μm 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 below 178 μm 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