Banca de DEFESA: JOSÉ RAELSON PEREIRA DE SOUZA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : JOSÉ RAELSON PEREIRA DE SOUZA
DATA : 24/02/2017
HORA: 07:30
LOCAL: Sala de aula do PPGCEM
TÍTULO:

EFFECT OF SINTERING AND HIGH-ENERGY MILLING ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF ALUMINUM ALLOYS RECYCLED FROM BEVERAGE CANS

PALAVRAS-CHAVES:

Recycling, aluminium, sintering, high energy milling

PÁGINAS: 68
GRANDE ÁREA: Engenharias
ÁREA: Engenharia de Materiais e Metalúrgica
SUBÁREA: Metalurgia de Transformação
ESPECIALIDADE: Metalurgia de Pó
RESUMO:

This work presents the study of the obtaining and characterization of aluminum recycling from beverage cans composed of aluminum alloys AA3004, 5042 and 5182, through the technique of high energy milling and powder metallurgy. The cans were selected, drilled and milled to obtain the metallic powder under different milling times (1h, 1h30min and 2h). The obtained powder was compacted at a load of 400 MPa and sintered at 600 ° C for two hours. For characterization of the aluminum poder were realized XRD, SEM and EDS, and laser granulometry analyzes; while the material consolidated by sintering, in addition to the analyzes via DRX, SEM and EDS, was also characterized by dilatometry, compression and microhardness Vickers tests. The size of the particles and their relationship to the properties of the aluminum alloy were evaluated. The processing route adopted resulted in the effective compaction of the aluminum powder from the beverage can milling, but with a clear presence of porosity, typical of sintered metals. A large incidence of precipitates of the dispense Al6Mn phase in the Al-alpha matrix (CFC) was observed. The samples presented variations in their mechanical properties as a function of milling time. The compressive strength increased from 105 N / mm² with 1h grinding to 120 N / mm² with 1h30min and decreasing to 110N / mm² with 2h grinding, but the ductility presented little variation. The hardness was 56.43 HV, 66.52 HV and 92.21 HV for the times of 1h, 1h30min and 2h, respectively.

MEMBROS DA BANCA:
Interno - 1652765 - MAURÍCIO MHIRDAUI PERES
Interno - 1350249 - RUBENS MARIBONDO DO NASCIMENTO
Externo à Instituição - BRUNO BELLINI MEDEIROS - UTFPR