Fabrication and mechanical properties (strength and fracture toughness) of chilled aluminum alloy–glass particulate composite

2001 ◽  
Vol 318 (1-2) ◽  
pp. 277-284 ◽  
Author(s):  
Joel Hemanth
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Aluminum Alloy ◽  
Particulate Composite ◽  
Alloy Glass

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.

scholarly journals Evaluation of Fracture Toughness and Mechanical Properties of Aluminum Alloy 7075, T6 with Nickel Coating

2014 ◽  
Vol 97 ◽  
pp. 178-185 ◽  
Author(s):  
S. Mohan Kumar ◽  
R. Pramod ◽  
M.E. Shashi Kumar ◽  
H.K. Govindaraju
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Aluminum Alloy ◽  
Nickel Coating ◽  
Aluminum Alloy 7075

ALUMINUM X7005

Alloy Digest ◽  
1966 ◽  
Vol 15 (1) ◽  
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Physical Properties ◽  
Stress Corrosion ◽  
Tensile Properties ◽  
Heat Treating ◽  
Aluminum Company ◽  
Stress Corrosion Resistance

Abstract Aluminum X7005 is an age-hardenable aluminum alloy having high mechanical properties, good fracture toughness, good corrosion and stress-corrosion resistance, and good weldability. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Al-151. Producer or source: Aluminum Company of America.

Assessment of Dispersiod Content and Chill Effect for Improved Mechanical Properties of Chilled Aluminium Alloy Quartz Particulate Composite

2008 ◽  
Author(s):  
R. Suresh ◽  
Joel Hemanth
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Metal Matrix ◽  
Aluminum Matrix ◽  
Particulate Composite ◽  
Stir Casting ◽  
Volumetric Heat Capacity ◽  
Casting Technique ◽  
Particulate Metal ◽  
Test Result

This paper deals with the assessment of dispersiod content and the effect of chill for improved mechanical properties. Investigation is carried out to evaluate Ultimate Tensile Strength (UTS), Fracture toughness, Hardness, and microstructure of chilled aluminum matrix and quartz particulate composite. In the present work, Quartz (SiO2) particles ranging from 30- to 100μm were chosen as dispersiod and added, ranging from 3 to 12 wt% in steps of 3%. The composite was prepared by stir-casting technique and poured into the sand molds incorporated with non-metallic and metallic chills. Test result showed that this MMC was greatly influenced by the dispersiod and chills. Fracture toughness & UTS of the composite are found to depend on the wt% of the dispersiod and chilling medium. It is observed that chill has influenced hardness of the composite. Volumetric heat capacity (VHC) of the chill is found to increase the amount of heat absorbed. Microstructure analysis also reveled uniform distribution of the dispersiod, which results in improved properties of the particulate metal matrix composite.

Reducing Residual Stress in 7050 Aluminum Alloy Die Forgings by Heat Treatment

2008 ◽  
Vol 130 (3) ◽  
Author(s):  
J. S. Robinson ◽  
D. A. Tanner
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Fracture Toughness ◽  
Residual Stress ◽  
Aluminum Alloy ◽  
Residual Stresses ◽  
Boiling Water ◽  
Hole Drilling ◽  
Subsequent Aging ◽  
Stress Relieving

Aerospace aluminum alloy forgings can have the residual stresses arising from heat treatment reduced by modification to the quench cooling rates and subsequent aging treatments. A series of propeller hubs usually made from the alloy 2014 have been closed die forged from the less quench sensitive alloy 7050. These forgings have been subjected to various quenching and aging treatments in an attempt to improve the balance of mechanical properties with the residual stress magnitudes. These forgings were not amenable to stress relieving by cold compression or stretching. Warm water (60°C) and boiling water quenches are investigated in addition to quenching into molten salt (200°C) and uphill quenching from −196°C. Various dual aging treatments including retrogression and reaging have been evaluated in an attempt to optimize low residual stress magnitudes with mechanical properties. Residual stresses determined by the center hole-drilling strain-gauge method are reported in addition to electrical conductivity, stress corrosion cracking, fracture toughness, initiation fatigue, and tensile mechanical property variations. It was found that quenching into boiling water and salt at 200°C did substantially reduce the residual stress but had only a small detrimental effect on the majority of the properties measured. However, the influence of quench rate on fracture toughness was much more significant. This is attributed to both coarse grain boundary precipitation and heterogeneous precipitation of η on Al3Zr dispersoids within the grains, which promotes easier crack propagation.

scholarly journals Fracture Toughness and Hardness studying for Polymer-Ceramic Composite

2014 ◽  
Vol 11 (2) ◽  
pp. 547-553
Author(s):  
Baghdad Science Journal
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Particulate Composite ◽  
Weight Fraction ◽  
Optical Microscope ◽  
Preparation Methods ◽  
Weight Percentage ◽  
Hardness Tests ◽  
Heat Treated ◽  
Matrix Hardness

A particulate composite material was prepared by adding the Titanium dioxide (TiO2) with a particle size of (75-150) µm to Epoxy resin at weight percentage of (10%,20%,30%,40%,50%).The following some mechanical properties were studied,fracture toughness, hardness.casting preparation methods were used in this study includes preparing plate of matrix and composites. specimens were prepared according to ASTM for the Mechanical properties tests. After that Another samples were heat treated for three and six hour at 65C?. Fracture toughness (Kic) represent for stress intensity factor results were showed that the curve of three hours aging increases in fracture toughness (Kic) for composites but for six hours aging increases fracture toughness (Kic) for polymer matrix. Hardness tests was showed that hardness results increased with the increase in weight fraction while a samples that not treated thermally have higher hardness than the samples for treated thermally. Finally, fracture surfaces were showed morphology failure surfaces by using an optical Microscope.

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