Nanocrystallization of Al88Ni10Nd2 alloy by mechanical alloying

Abstract

In the present study, elemental mixtures of Al, Ni and Nd powders with nominal compositions of Al₈₈Ni₁₀Nd₂ was mechanically alloyed for times up 110 h yields amorphous or nanocrystalline products. Structural changes and thermal behaviour of the mechanically alloyed powders at different stages of milling have been characterized by X-ray diffraction (XRD), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). The XRD, DSC and SEM results showed that solid state reaction occurred during mechanical alloying and nano-intermetallic compounds of the Al₈₈Ni₁₀Nd₂ powders can be obtained. Microstructure of the mechanically alloyed Al₈₈Ni₁₀Nd₂ powder indicates the formation of fine nanoparticles with a size of about 10-20 nm. However, no amorphous phase has been obtained in Al₈₈Ni₁₀Nd₂ powders after milled for times up 110 h.

Keywords

• Al-Ni-Nd Alloy,Mechanical Alloying,Nanocrystals,Phase Transitions

References

1. Yrd.Doç.Dr. Barış AVAR, Bülent Ecevit Üniversitesi Malzeme ve Matelürji Bölümü