Microstructure and properties of high strength Al-Fe-Cu-Si-Zn alloy (AA8079) produced by mechanical alloying and powder metallurgy
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Meiyanathan Meignanamoorthy
Abstract
The intent of this work is to synthesize Al-Fe-Cu-Si-Zn alloy (AA8079)at different milling hours, i. e. 1, 10, 20, 30 and 40 h, by mechanical aloying (MA). X-ray diffraction (XRD) and scanning electron microscope (SEM) analysis was carried out for the milled powders. From the SEM images, a significant change in the size and shape of the particle was observed while the milling time was extended from 1 to 40 h. The effect of milling time on properties such as density, hardness and compressive strength was analyzed. After mechanical alloying, the powders were compacted at three different compaction pressures (500 MPa, 550 MPa & 600 MPa) and sintered in a furnace at different temperatures (500 °C, 550 °C & 600 °C) under a controlled atmosphere for 1 h, 2 h and 3 h. An extreme Vickers hardness of 815 MPa and compressive strength of 327 MPa were achieved for 40 h milled powders compacted at 600 MPa, sintered at a temperature of 600°C for a period of 3 h. A optical microscope (OM) and SEM analysis were conducted for the sintered AA8079 samples to study the effect of milling time and PM parameters on the microstructure.
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© 2019, Carl Hanser Verlag, München
Artikel in diesem Heft
- Inhalt/Contents
- 10.3139/120.019061
- Fachbeiträge/Technical Contributions
- Effect of rhenium and cobalt additions on the microstructure and gamma prime phase stability of vacuum arc melted modified nickel-based superalloys grade MGA 1400
- Residual strength of fire-exposed glass-reinforced epoxy composite pipes
- Impact attenuator conceptual design using lightweight materials and meta-modeling technique
- Microstructure and properties of high strength Al-Fe-Cu-Si-Zn alloy (AA8079) produced by mechanical alloying and powder metallurgy
- Determination of the static, dynamic and cyclic properties of the heat affected zone for different steel grades
- Friction stir welded and deep drawn multi-material tailor welded blanks
- Effects of cut-outs on the vibrational characteristics of a hollow shaft system
- Effect of heat treatment on wear and corrosion behavior of high chromium white cast iron
- Effect of nanoparticle reinforcement on mechanical properties and erosion–corrosion behavior of cast aluminum
- Effect of different grain sizes on the static strain aging behavior of bake hardening steel
- Effect of fillers on vinylester matrix composites
- Impact of oxygen doping on AC impedance, complex dielectric and electrical modulus spectra of a Hg-Ba-Ca-Cu-O ceramic
- Effect of TiBAl inoculation on abrasive wear resistance of high Cr white cast iron
- Stress shielding reduction via graded porosity of a femoral stem implant
Artikel in diesem Heft
- Inhalt/Contents
- 10.3139/120.019061
- Fachbeiträge/Technical Contributions
- Effect of rhenium and cobalt additions on the microstructure and gamma prime phase stability of vacuum arc melted modified nickel-based superalloys grade MGA 1400
- Residual strength of fire-exposed glass-reinforced epoxy composite pipes
- Impact attenuator conceptual design using lightweight materials and meta-modeling technique
- Microstructure and properties of high strength Al-Fe-Cu-Si-Zn alloy (AA8079) produced by mechanical alloying and powder metallurgy
- Determination of the static, dynamic and cyclic properties of the heat affected zone for different steel grades
- Friction stir welded and deep drawn multi-material tailor welded blanks
- Effects of cut-outs on the vibrational characteristics of a hollow shaft system
- Effect of heat treatment on wear and corrosion behavior of high chromium white cast iron
- Effect of nanoparticle reinforcement on mechanical properties and erosion–corrosion behavior of cast aluminum
- Effect of different grain sizes on the static strain aging behavior of bake hardening steel
- Effect of fillers on vinylester matrix composites
- Impact of oxygen doping on AC impedance, complex dielectric and electrical modulus spectra of a Hg-Ba-Ca-Cu-O ceramic
- Effect of TiBAl inoculation on abrasive wear resistance of high Cr white cast iron
- Stress shielding reduction via graded porosity of a femoral stem implant