Evaluation of hardness strength and microstructures of recycled Al chip and powder AA6061 fabricated by cold compaction method.

Colloquium of Advanced Mechanics 2016

Kadir, M.I.A.^1 ; Mustapa, M.S.^1 ; Mahdi, A.S.^1 ; Kuddus, S.^1 ; Samsi, M.A.^1

Structural Integrity and Monitoring Research Group (SIMReG), Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia (UTHM), Malaysia^1

关键词: Cold compaction;    Different particle sizes;    Forging process;    High speed milling;    Large amounts;    Milling process;    Planetary ball mill;    Reinforcement materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/165/1/012012/pdf
DOI  :  10.1088/1757-899X/165/1/012012

来源: IOP

【 摘 要 】

The present study is aimed at investigating Mechanical properties of the milled recycling Aluminium type AA6061 according to the change of the volume fraction for the continents and the reinforcement material. In the study, high speed millings were used for producing the chip sizes of AA6061 and followed by a cold press forging process. Milling process was used to produce smaller particles of aluminium chips by the planetary ball mill. Three groups of specimens were taken according to the percentage of chip and powder, while, two groups were taken according to the mixture between different particle sizes of powders. Where, four types of particle size were chosen (25, 63, 100, mix of particles) μm. The results were showing that the Microhardness increased with increasing the percentage of chip, then the density was decreased due to a large amount of pores were found. By the experiments, it can be concluded, the mixture of powders is the best choice for all groups. On the other hand, the type D3 (78.5% (25μm) + 21.5% (100μm)) gave the best result for microhardness compare with others according to particle.