Second Phase Particles and Mechanical Properties of 2618 Aluminum Alloy Ring

2021 ◽  
Vol 1035 ◽  
pp. 212-216
Author(s):  
Jing Ze Jiang ◽  
Bao Li ◽  
Bi Cheng Yang
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Axial Direction ◽  
Fracture Morphology ◽  
Second Phase ◽  
X Ray ◽  
Intermetallic Particles ◽  
Second Phase Particles ◽  
Result Show ◽  
Structural Parts

2618 aluminum alloy has been used in aerospace structural parts, but the coarse second phase particles agglomerated in the alloy usually result in poor mechanical properties. In this paper, the morphology and distribution of the second phase particles and the mechanical properties of 2618 aluminum alloy ring were investigated, and the fracture morphology is observed by scanning electron microscope (SEM) and analyzed by energy dispersive X-ray spectroscopy (EDS). The result show that the mechanical properties in the axial direction are lower than those in the circumferential direction. It is evidentially shown that the agglomeration of Al9FeNi intermetallic particles and magnesium oxides in the fracture is the main reason for the poor mechanical properties in the axial direction.

The second phase particles and mechanical properties of 2124 aluminum alloy processed by accumulative back extrusion

2014 ◽  
Vol 58 ◽  
pp. 535-542 ◽  
Author(s):  
P. Shaterani ◽  
A. Zarei-Hanzaki ◽  
S.M. Fatemi-Varzaneh ◽  
S.B. Hassas-Irani
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Second Phase ◽  
Second Phase Particles

Non-Heat Treatable Al-Alloys: Development of Intermetallic Particles during Solidification and Homogenization

2019 ◽  
Author(s):  
Olaf Engler ◽  
Katrin Kuhnke ◽  
Jochen Hasenclever
Keyword(s):  
Mechanical Properties ◽  
Solid Solution ◽  
Electrical Conductivity ◽  
Al Alloys ◽  
Alloying Elements ◽  
Second Phase ◽  
Phase Selection ◽  
Industrial Processing ◽  
Intermetallic Particles ◽  
Second Phase Particles

The materials properties of Al-alloys are controlled by the added alloying elements and by the processing conditions through the resulting materials microstructure. An important aspect in the description of the microstructure is the constitution of the material in terms of alloying elements in solid solution and, in turn, volume, size, morphology, and species of second-phase particles. These constitutional characteristics, conveniently summarized as microchemistry, have an impact on physical properties like thermal or electrical conductivity and on mechanical properties including strength and formability of Al-alloys. In the present article, we summarize the phase selection upon solidification and the changes in microchemistry during subsequent homogenization annealing during conventional industrial processing of non-heat-treatable Al wrought alloys.

Analytical Electron Microscopy Study of Second-Phase Particles in 7075 and 7475 Aluminum Alloys

1985 ◽  
Vol 43 ◽  
pp. 348-349
Author(s):  
M. Raghavan ◽  
J. Y. Koo ◽  
J. W. Steeds ◽  
B. K. Park
Keyword(s):  
Aluminum Alloys ◽  
Silicon Oxide ◽  
Analytical Electron Microscopy ◽  
Microscopy Study ◽  
Electron Microscopy Study ◽  
Partial Substitution ◽  
Second Phase ◽  
X Ray ◽  
Second Phase Particles ◽  
Almost All

X-ray microanalysis and Convergent Beam Electron Diffraction (CBD) studies were conducted to characterize the second phase particles in two commercial aluminum alloys -- 7075 and 7475. The second phase particles studied were large (approximately 2-5μm) constituent phases and relatively fine ( ∼ 0.05-1μn) dispersoid particles, Figures 1A and B. Based on the crystal structure and chemical composition analyses, the constituent phases found in these alloys were identified to be Al7Cu2Fe, (Al,Cu)6(Fe,Cu), α-Al12Fe3Si, Mg2Si, amorphous silicon oxide and the modified 6Fe compounds, in decreasing order of abundance. The results of quantitative X-ray microanalysis of all the constituent phases are listed in Table I. The data show that, in almost all the phases, partial substitution of alloying elements occurred resulting in small deviations from the published stoichiometric compositions of the binary and ternary compounds.

KAISER ALUMINUM ALLOY 7049

Alloy Digest ◽  
1999 ◽  
Vol 48 (12) ◽  
Keyword(s):  
Mechanical Properties ◽  
Shear Strength ◽  
Aluminum Alloy ◽  
Physical Properties ◽  
Surface Treatment ◽  
Stress Corrosion Cracking ◽  
Heat Treating ◽  
Kaiser Aluminum ◽  
Resistance To Stress ◽  
Structural Parts

Abstract Kaiser Aluminum Alloy 7049 has high mechanical properties and good machinability. The alloy offers a resistance to stress-corrosion cracking and is typically used in aircraft structural parts. This datasheet provides information on composition, physical properties, hardness, tensile properties, and shear strength as well as fatigue. It also includes information on forming, heat treating, machining, and surface treatment. Filing Code: AL-365. Producer or source: Tennalum, A Division of Kaiser Aluminum.

UNS A97075

Alloy Digest ◽  
1986 ◽  
Vol 35 (7) ◽  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Aluminum Alloy ◽  
High Strength ◽  
Heat Treating ◽  
Good Resistance ◽  
Temperature Performance ◽  
Structural Applications ◽  
Structural Parts ◽  
Very High

Abstract UNS No. A97075 is a wrought precipitation-hardenable aluminum alloy. It has excellent mechanical properties, workability and response to heat treatment and refrigeration. Its typical uses comprise aircraft structural parts and other highly stressed structural applications where very high strength and good resistance to corrosion are required. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength as well as fatigue. It also includes information on low temperature performance as well as forming, heat treating, and machining. Filing Code: Al-269. Producer or source: Various aluminum companies.

KAISER ALUMINUM ALLOY 7050

Alloy Digest ◽  
2000 ◽  
Vol 49 (1) ◽  
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Tensile Strength ◽  
Aluminum Alloy ◽  
Heat Treating ◽  
High Fracture Toughness ◽  
High Fracture ◽  
Kaiser Aluminum ◽  
Structural Parts ◽  
Very High

Abstract Kaiser Aluminum Alloy 7050 has very high mechanical properties including tensile strength, high fracture toughness, and a high resistance to exfoliation and stress-corrosion cracking. The alloy is typically used in aircraft structural parts. This datasheet provides information on composition, physical properties, hardness, tensile properties, and shear strength as well as fracture toughness and fatigue. It also includes information on forming, heat treating, machining, and joining. Filing Code: AL-366. Producer or source: Tennalum, A Division of Kaiser Aluminum.

Effect of Nanometer Magnesium Oxide Addition on the Cast Microstructure of X80 Pipeline Steel

2013 ◽  
Vol 401-403 ◽  
pp. 610-613
Author(s):  
Jian Ming Wang ◽  
Yang Liu ◽  
Yan Liu ◽  
Qian He Ma
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Magnesium Oxide ◽  
Pipeline Steel ◽  
Harsh Environment ◽  
Second Phase ◽  
X80 Pipeline Steel ◽  
Oxide Addition ◽  
Second Phase Particles ◽  
Cast Microstructure

The pipeline steel as an application in pipeline construction must have good comprehensive mechanical properties due to the harsh environment of the pipeline engineering. So this experiment takes the X80 pipeline steel as the research object, the thermal stability second phase particles which would not be dissolved or aggregated at high temperature will be expected by means of adding nanomagnesium oxide into the steel with the method of carrier dispersion addition. The effect of nanometer magnesium oxide addition on the cast microstructure of X80 pipeline steel was analysed. The results show that the cast microstructure is consist of the ferrite and a small amount bainite. And the bainite is distributed at the boundary of the ferrite grains. When adding 0.02 wt% nanometer magnesium oxides, the number of bainite increases significantly in the cast microstructure, which is mostly distributed at the boundary of the ferrite grains.

Role of second-phase particles in the microstructural evolution and mechanical properties of extruded Mg-Gd-Y-Ag-Zr alloys

2020 ◽  
Vol 24 ◽  
pp. 100956
Author(s):  
Fan Zhang ◽  
Yafei Wang ◽  
Yunbiao Duan ◽  
Kaijun Wang ◽  
Yutian Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Microstructural Evolution ◽  
Second Phase ◽  
Second Phase Particles ◽  
Zr Alloys
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