摘要
The Al-5Ti-0.5B-0.5C grain refiner was pre-pared by powder metallurgy(PM).Microstructures of the grain refiner and its grain refinement performance in commercially pure aluminum(Al)were investigated by X-ray diffraction(XRD),scanning electron microscopy(SEM),and differential scanning calorimetry(DSC).It is found that the average grain size of commercially pure Al can be reduced from~15,000 to~180μm by the addition of Al-5Ti-0.5B-0.5C grain refiner prepared by PM,based on 0.01 wt%Ti addition.The grain refinement efficiency begins to decrease slightly when the grain refiner is kept in the melt for 60 min.The grain refinement is attributed to high stability,proper size,and high density of Al3Ti,TiB2,and TiC particles.
出处
《Rare Metals》
SCIE
EI
CAS
CSCD
2022年第7期2357-2362,共6页
稀有金属（英文版）
基金
financially supported by the National Basic Research Program of China (No. 2012CB619503)
the National High Technology Research and Development Program of China (No. 2013AA031001)
the International Science & Technology Cooperation Program of China (No. 2012DFA50630)
