Effect of the temperature on the mechanism of the precipitation in Al-8% mass.Mg alloy

Bensaada, S.; Bouziane, Mohamed Tewfik; Ferhat, Mohammedi

doi:10.1016/j.matlet.2011.05.087

Cited by 12 publications

(7 citation statements)

References 16 publications

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“…Different precipitate particles are formed by phase transformations during the sensitization process. In sensitized Al‐Mg alloys, rearrangement of dislocations and dislocation substructures due to the transformation from single phase α to equilibrium β‐phase are mainly responsible for the reorientation of the grain structure . Additionally, prolonged annealing or sensitization provides suitable temperature and time for the solute atoms to redistribute themselves through phase transformation near grain boundaries as well as filling of lattice vacancies throughout the grains; hence, reorientation of grain size is inevitable .…”

Section: Resultsmentioning

confidence: 99%

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Investigation of fatigue and fracture behaviour of sensitized marine grade aluminium alloy AA 5754

Kumar

Singh

2019

Fatigue Fract Eng Mat Struct

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In the present study, fatigue and fracture characteristics of sensitized marine grade Al‐Mg (AA 5754) alloy are experimentally evaluated. Received alloy is sensitized at temperatures of 150°C (SENS50) and 175°C (SENS75) for 100 hours. Fracture parameters, KIc and JIc, are experimentally evaluated. Slow strain rate tensile tests at a crosshead speed of 0.004, 0.006, and 0.01 mm/min; fatigue crack growth tests at load ratios (R = Pmin/Pmax) of 0.1, 0.2, and 0.5; and low cycle fatigue tests at four strain amplitudes of (0.3‐0.6)% are performed for SENS50 and SENS75 alloys. Relatively lower magnitude of fracture toughness values are observed for SENS75 specimen. Severe degradation in tensile properties, fatigue crack growth characteristics, and low cycle fatigue lives are observed for SENS75 samples. Extended finite element method is adopted to simulate the elasto‐plastic crack growth during fracture toughness evaluation. Scanning electron microscopy (SEM) is used to understand the failure mechanism of sensitized alloys.

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Section: Resultsmentioning

confidence: 99%

“…And then an equilibrium phase β is formed having Al 3 Mg 2 composition. These β‐phases preferentially nucleated near grain boundaries of cubic with centered faces structure . These hardening precipitates formed during phase transformation significantly affect the grain structure and mechanical properties of the alloy .…”

Section: Methodsmentioning

confidence: 99%

Investigation of fatigue and fracture behaviour of sensitized marine grade aluminium alloy AA 5754

Kumar

Singh

2019

Fatigue Fract Eng Mat Struct

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“…Precipitation of b phase at the grain boundaries was increased with an increase in the sensitization time at a certain temperature. Bensaada et al [12] demonstrated that the precipitation behavior of b phase was controlled by the annealing temperature. Grain boundary precipitation was continuous at an annealing temperature of 160°C, but discontinuous at 220°C.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties, intergranular corrosion behavior and microstructure of Zn modified Al–Mg alloys

Meng

Zhang

Cui

et al. 2014

Journal of Alloys and Compounds

118

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“…Below 200 • C, a large number of submicron-scale needle precipitates were formed, which distributed along grain boundaries and subgrain boundaries. The precipitates were recognized as β' phase, which is a metastable β phase and has a semicoherent lattice with α-Al matrix [13,14]. In this condition, the matrix contained a large density of dislocations.…”

Section: Effect Of Annealing Temperature On Precipitations In Al-10mgmentioning

confidence: 99%

Annealing Response of a Cold-Rolled Binary Al–10Mg Alloy

Feng

Huang

et al. 2019

Metals

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The effect of annealing temperature on microstructure and mechanical properties of a cold-rolled Al–10Mg alloy has been investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), electron backscatter diffraction (EBSD) and tensile testing. The results showed that supersaturated Mg precipitated along grain boundaries and deformation bands during annealing treatment and precipitation size and the concentration of solid solution Mg atoms increased with the rising of annealing temperature. When annealed at low temperature, accumulation and annihilation of dislocations were the primary way of recovery; as temperature increased to 300 °C, recrystallized grains were formed around the large size β phase through particle-stimulated nucleation. A high ultimate strength (550 MPa) and a middle ductility (14%) were obtained when the Al–10Mg alloy was annealed at 200 °C for 1 h. The abnormal decrease of elongation when the Al–10Mg alloy was annealed at 250–300 °C was due to the formation of a continuous network distribution of large size β phase particles along grain boundaries.

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Effect of the temperature on the mechanism of the precipitation in Al-8% mass.Mg alloy

Cited by 12 publications

References 16 publications

Investigation of fatigue and fracture behaviour of sensitized marine grade aluminium alloy AA 5754

Investigation of fatigue and fracture behaviour of sensitized marine grade aluminium alloy AA 5754

Mechanical properties, intergranular corrosion behavior and microstructure of Zn modified Al–Mg alloys

Annealing Response of a Cold-Rolled Binary Al–10Mg Alloy

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