In the present study,Al86Ni8Y6 and Al86Ni6Y4.5Co2La1.5 bulk amorphous nanocomposites were synthesized by spark plasma sintering of milled melt spun ribbon particles.The as-cast ribbons were of near amorphous nature with minute amount of FCC Al embedded in the amorphous matrix.Milling of the ribbons resulted in partial devitrification due to mechanical crystal-lization.The milled ribbon particles were sintered in the temperature and pressure range of 300-500℃and 500-700 MPa,respectively.It was observed that nominal amount of amorphous phase was retained at 500℃and 500 MPa.With increase in sintering pressure and decrease in sintering temperature,the amount of crystalline phase evolution decreased,and maxi-mum amount of amorphous phase was retained at 300℃and 700 MPa.The microstructure consisting of amorphous phase embedded with hard intermetallic phases led to increase in the nanohardness of Al86Ni8Y6 and Al86Ni6Y4.5Co2La1.5 as-cast ribbons from 3.26±0.59 GPa and 3.81±0.58 GPa to 6.06±0.70 GPa and 6.14±0.82 GPa,respectively,for the corresponding consolidated amorphous nanocomposite.Microhardness of the three and five component system bulk samples was 4.19±0.13 GPa and 3.6±0.13 GPa,respectively.

Department of Mechanical Engineering,School of Engineering and Technology,Sharda University,Greater Noida 201310,India;Department of Metallurgy Engineering and Materials Science,Indian Institute of Technology Indore,Indore 453552,India;Department of Metallurgical and Materials Engineering,Indian Institute of Technology Kharagpur,Kharagpur 721302,India

[1]Ashutosh Sahu;Ram Sajeevan Maurya;Lavish Kumar Singh;Tapas Laha-.Analyzing the Effects of Milling and Sintering Parameters on Crystalline Phase Evolution and Mechanical Properties of Al86Ni8Y6 and Al86Ni6Y4.5Co2La1.5 Amorphous Ribbons)[J].金属学报（英文版）,2022(06):1043-1054

Al86Ni8Y6,Al86Ni6Y4,5Co2La1,Ribbons,devitrification,nanohardness

Analyzing,Effects,Milling,Sintering,Parameters,Crystalline,Phase,Evolution,Mechanical,Properties,Amorphous,In,present,study,bulk,amorphous,nanocomposites,were,synthesized,by,spark,plasma,sintering,milled,melt,spun,particles,cast,ribbons,near,nature,minute,amount,FCC,embedded,matrix,resulted,partial,due,mechanical,lization,sintered,temperature,pressure,range,respectively,It,was,observed,that,nominal,retained,With,increase,crystalline,evolution,decreased,maxi,mum,microstructure,consisting,intermetallic,phases,from,GPa,corresponding,consolidated,Microhardness,three,five,component,system,samples

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