A new type of Ti cladding nano-sized TiN（TiN/Ti）composite grain refiner was prepared by high energy ball milling

and effects of the prepared grain refiner on refining effects and anti-fading behavior of commercial pure Al were investigated.The results show that TiN/Ti composite refiner exhibits the excellent grain refining effects on commercial pure aluminum.With 0.025% addition

microstructure of the samples is transformed from coarse columnar grain into equiaxed one

and with 0.2% addition

average grain size in the pure Al reaches up to 82 μm.Average grain size reaches 101

153 and 327 μm in the samples with adding the composite refiner in the liquid Al at 725 ℃ for 30

60 and 120 min.Compared with pure Ti powder

TiN/Ti composite refiner exhibits excellent anti-fading behavior

which is attributed to the dispersion and stability of Ti cladding nao-size TiN in liquid Al.