Effect Of Different Mechanical Milling Processes On Morphology And Microstructural Changes Of Nano And Micron Al-Powders

Archives of Metallurgy and Materials

B. Madavali¹  C.-M. Kim¹  S.-J. Hong¹  J.-M. Koo²  T.-H. Lee³  H.-S. Kim³  T.-J. Eom³ 

[1] INSTITUTE FOR RARE METALS, KONGJU NATIONAL UNIVERSITY, CHEONAN 331-717, REPUBLIC OF KOREA;DEVELOPMENT OF MAINTENANCE TECHNOLOGY, ATRI(AERO-TECHNOLOGY RESEARCH INSTITUTE), ROKAF, P.O. BOX, 304-160, GEOMSA-DONG, DONG-GU, DAEGU-SI, 701-799, REPUBLIC OF KOREA;DIVISION OF ADVANCED MATERIALS ENGINEERING &

关键词: Keywords: Al-alloys;    High-energy ball milling;    Low energy ball milling;    Plastic deformation;   

DOI  :  10.1515/amm-2015-0105

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

In this research, effect of the various mechanical milling process on morphology and microstructural changes of nano and micron Al-powders was studied. The milling of Al-powders was performed by both high energy and low energy ball milling process. The influence of milling (pulverizing) energy on the structural changes of Al-powders was studied. Al-nanoparticles were agglomerated during the MA and its size was increased with increasing milling while micron Al-powder gets flattened shape during high energy ball milling due to severe plastic deformation. Meanwhile, structural evolution during high energy ball milling of the nano powder occurred faster than that of the micron powder. A slight shift in the position of X-ray diffraction peaks was observed in nano Al-powders but it was un-altered in macro Al-powders. The variation in lattice parameters was observed only for nano Al powders during the high energy ball milling due to lattice distortion.

【 授权许可】

Unknown