材料工程2017，Vol.45Issue(2)：39-45,7.DOI:10.11868/j.issn.1001-4381.2015.000588
高温熔体反应法制备Al-5Ti-1B细化剂
Synthesis of Al-5Ti-1B Refiner by Melt Reaction Method
李贺 1柴丽华 1马腾飞 2陈子勇1
作者信息
- 1. 北京工业大学材料科学与工程学院 ,北京100124
- 2. 哈尔滨工业大学材料科学与工程学院 ,哈尔滨150001
- 折叠
摘要
Abstract
Al-5Ti-1B refiner was successfully prepared by melt reaction method .Through the thermo-dynamics calculation ,the initial reaction temperature was determined .The influence of reaction tem-perature on microstructure and absorption rate of the alloy was investigated .The phase and micro-structure of the alloy were observed by X-ray diffraction ,scanning electron microscope and energy dis-persive spectrometer .The Al-5Ti-1B refiner was extruded at high temperature to wire with the diame-ter of 9 .5mm ,and then the refinement experiment was carried out on pure aluminium .The results in-dicate that the refiner consists of TiB2 ,TiAl3 and α-Al ,and the microstructure prepared at 850℃ is the optimum and the absorption rate of Ti and B matches the best .The TiAl3 and TiB2 phases distrib-ute homogeneously in the matrix after extrusion .When adding 0 .2% (mass fraction) of Al-5Ti-1B re-finer ,the grain size of pure aluminium reduces from 3 .99mm to 0 .45mm .关键词
Al-Ti-B/熔体反应法/热力学计算/微观组织/晶粒细化Key words
Al-Ti-B/melt reaction method/thermodynamics calculation/microstructure/grain refine-ment分类
矿业与冶金引用本文复制引用
李贺,柴丽华,马腾飞,陈子勇..高温熔体反应法制备Al-5Ti-1B细化剂[J].材料工程,2017,45(2):39-45,7.
