Evaluation of a Mechanically Alloyed Nanostructured Al-Si-Mg Alloy |
Paper ID : 1353-UFGNSM-FULL |
Authors: |
Abstract: |
In two recent decades mechanical alloying (MA) process is considered as a modern method in fabricating powder alloys and intermetallic compounds. MA provides us good results in producing aluminum and its alloys products. In the present work aluminum powders and other alloying elements according to Al-6063 composition have been subjected to mechanical alloying process for 15 hours in an inert atmosphere. Powder size and microhardness was measured in different milling times. In order to study mechanical alloying effects, MA powders were analyzed through XRD, XRF, and DTA. Compressibility of final powders was evaluated after annealing within 300 0C temperature vacuum media. Metallographic structures and influences of milling time on particle size and distribution was studied by means of optical microscopy. An increase in milling time results in a fine homogenous structure; it also decreases the mean particle size to less than 10 µm and the microhardness reach the value of 185 VHN. Nanostructure was obtained through MA process and was approved by XRD analysis. |
Keywords: |
Al-6063 alloy; Mechanical Alloying Process (MA); Nanostructure; Powder. |
Status : Paper Accepted (Poster Presentation) |