High Temperature Aqueous Corrosion of Aluminum-Uranium and Aluminum-Silicon-Uranium Alloys

CORROSION ◽  
1961 ◽  
Vol 17 (7) ◽  
pp. 9-11 ◽  
Author(s):  
H. C. Bowem ◽  
R. L. Dillon
Keyword(s):  
High Temperature ◽  
Aluminum Alloys ◽  
Weight Percent ◽  
Deionized Water ◽  
Cast Aluminum ◽  
Aqueous Corrosion ◽  
Silicon Alloys ◽  
Aluminum Silicon Alloys ◽  
Made In ◽  
Aluminum Silicon

Abstract Tests in 350 C deionized water of aluminum-uranium alloys were made in an effort to predict behavior in this environment of aluminum-plutonium alloys, corrosion behavior of which is unknown. Aluminum-silicon-uranium alloys also were tested under the same conditions. Samples prepared by casting, of wrought material, and of castings by the cryolite process were compared. Tests showed no samples significantly distorted jackets when there were minor openings in the jackets. Aluminum alloys with less than 6 weight-percent uranium were unsatisfactory. Aluminum-silicon alloys containing tip to 6 weight-percent uranium were satisfactory. Some as-cast aluminum-uranium alloys were preferable to aluminum-silicon. 4.6.5, 6.4.2, 3.5.9

scholarly journals Fracture–Mechanical Assessment of the Effect of Defects on the Fatigue Lifetime and Limit in Cast and Additively Manufactured Aluminum–Silicon Alloys from HCF to VHCF Regime

Metals ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 943 ◽  
Author(s):  
Jochen Tenkamp ◽  
Mustafa Awd ◽  
Shafaqat Siddique ◽  
Peter Starke ◽  
Frank Walther
Keyword(s):  
Stress Intensity ◽  
Aluminum Alloys ◽  
Cast Alloy ◽  
Weight Ratio ◽  
Silicon Alloys ◽  
Fatigue Lifetime ◽  
Aluminum Silicon Alloys ◽  
Die Cast ◽  
The Relationship ◽  
Aluminum Silicon

Aluminum–silicon alloys are commonly used in die-cast and additively manufactured (AM) light-weight components due to their good processability and high strength-to-weight ratio. As both processing routes lead to the formation of defects such as gas and shrinkage porosity, a defect-sensitive design of components is necessary for safe application. This study deals with the fatigue and crack propagation behavior of die-cast alloy AlSi7Mg0.3 and additively manufactured alloy AlSi12 and its relation to process-induced defects. The different porosities result in significant changes in the fatigue stress-lifetime (S–N) curves. Therefore, the local stress intensity factors of crack-initiating defects were determined in the high and very high cycle fatigue regime according to the fracture mechanics approach of Murakami. Through correlation with fatigue lifetime, the relationship of stress intensity factor (SIF) and fatigue lifetime (N) could be described by one power law (SIF–N curve) for all porosities. The relationship between fatigue limit and defect size was further investigated by Kitagawa–Takahashi (KT) diagrams. By using El Haddad’s intrinsic crack length, reliable differentiation between fracture and run out of the cast and AM aluminum alloys could be realized. SIF–N curves and KT diagrams enable a reliable fatigue design of cast and AM aluminum alloys for a finite and infinite lifetime.

REYNOLDS 390 and A390

Alloy Digest ◽  
1971 ◽  
Vol 20 (8) ◽  
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
High Hardness ◽  
Heat Treating ◽  
Silicon Alloys ◽  
Aluminum Silicon Alloys ◽  
Temperature Performance

Abstract REYNOLDS 390 and A390 are hypereutectic aluminum-silicon alloys having excellent wear resistance coupled with good mechanical properties, high hardness, and low coefficients of expansion. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, and machining. Filing Code: Al-203. Producer or source: Reynolds Metals Company.

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