Computer Data Acquisition Monitoring of the Stress Corrosion Cracking of Depleted Uranium Cantilever Beam Specimens

1980 ◽  
Vol 8 (6) ◽  
pp. 293 ◽  
Author(s):  
KC Lieb ◽  
R Horstman ◽  
KA Peters ◽  
RL Meltzer ◽  
MB Vieth ◽  
...  
Keyword(s):  
Data Acquisition ◽  
Stress Corrosion ◽  
Cantilever Beam ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Depleted Uranium ◽  
Computer Data ◽  
Computer Data Acquisition

Stress Corrosion Cracking of Depleted Uranium Alloys in Moist Salt Ladened Air

CORROSION ◽  
1981 ◽  
Vol 37 (2) ◽  
pp. 81-88 ◽  
Author(s):  
D. F. Hasson ◽  
J. A. Joyce ◽  
C. R. Crowe
Keyword(s):  
Stress Corrosion ◽  
Crack Growth ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Depleted Uranium ◽  
Computer Data ◽  
Computer Data Acquisition ◽  
Heat Treated ◽  
Threshold Data ◽  
Mixed Fracture

Abstract Stress corrosion cracking (SCO in selected depleted uranium alloys in salt ladened moist air environments has been studied by cantilever beam testing. Crack growth kinetics were monitored during the test using a computer data acquisition system. Continuous measurements of crack growth with time showed discontinuous crack growth with increasing KI. Threshold stress intensity values for stress corrosion cracking KISCC, were found to be 24.4 MPa - m½ and 15.6 MPa - m½ for U-3/4 Ti and DU-3/4 Quintalloys, respectively. Values for U-2 Mo in two heat treated conditions were slightly less than the U-3/4 Ti threshold. Data is presented in a “safe zone” plot of flaw size vs applied stress. Fractographic investigation by scanning electron microscopy revealed mixed fracture modes with both transgranular and intergranular fracture occurring.

The Study of Stress Corrosion Cracking in Aluminum Alloy 7075(W) under Tensile Loading by Eddy Current Measurement

2011 ◽  
Vol 83 ◽  
pp. 216-223
Author(s):  
Mahmood Dollah
Keyword(s):  
Aluminium Alloy ◽  
Stress Corrosion ◽  
Cantilever Beam ◽  
Eddy Current ◽  
Stress Corrosion Cracking ◽  
Double Cantilever Beam ◽  
Tensile Loading ◽  
Corrosion Cracking ◽  
Active Path ◽  
Aluminum Alloy 7075

The double cantilever beam has been widely used in the past and has proved one of the most popular designs for measuring the growth rate of stress corrosion cracks in materials. In this study, the double cantilever beam specimens were used to study the effect of tensile loading on stress corrosion cracking behaviour in aluminium alloy 7075(W). Cracks initiated readily in 3.5%NaCl solution with tensile loading conditions. Stress Corrosion Cracking (SCC) development was found to follow an intergranular path, which strongly depended on microstructure of material. Tests also were carried out to measure the threshold stress intensity, KISCC, which SCC would not occur. The SCC test was explained by an active path mechanism due to the galvanic interaction between grain boundary precipitates and adjacent precipitate-free zones. Crack lengths were measured with an eddy current bore probe and confirmed by optical metallography. The data from the eddy current tests on real stress corrosion cracks were used to construct an eddy current calibration curve for predicting stress corrosion crack lengths of aluminium alloy 7075(W).

AMBRONZE 413

Alloy Digest ◽  
1969 ◽  
Vol 18 (6) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Surface Treatment ◽  
Stress Corrosion ◽  
Tensile Properties ◽  
Stress Corrosion Cracking ◽  
Electrical Contact ◽  
Heat Treating ◽  
Corrosion Cracking ◽  
Tin Bronze

Abstract AMBRONZE 413 is a copper-tin bronze recommended for plater's plates and electrical contact springs. It is relatively immune to stress-corrosion cracking. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Cu-201. Producer or source: Anaconda American Brass Company.

NICROFER 5716 HMoW

Alloy Digest ◽  
1985 ◽  
Vol 34 (11) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Stress Corrosion ◽  
Tensile Properties ◽  
Stress Corrosion Cracking ◽  
Crevice Corrosion ◽  
Corrosion Cracking ◽  
Low Carbon ◽  
Nickel Chromium ◽  
Corrosion Pitting

Abstract NICROFER 5716 HMoW is a nickel-chromium-molybdenum alloy with tungsten and extremely low carbon and silicon contents. It has excellent resistance to crevice corrosion, pitting and stress-corrosion cracking. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, machining, and joining. Filing Code: Ni-324. Producer or source: Vereingte Deutsche Metallwerke AG.

NAS 825

Alloy Digest ◽  
2012 ◽  
Vol 61 (2) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Stress Corrosion ◽  
Tensile Properties ◽  
Nickel Alloy ◽  
Stress Corrosion Cracking ◽  
Chloride Ion ◽  
Heat Treating ◽  
Corrosion Cracking ◽  
Corrosion Resistant

Abstract NAS 825 is a corrosion-resistant nickel alloy that has resistance to both oxidizing and reducing environments, and with 42% nickel, the alloy is very resistant to chloride-ion stress-corrosion cracking. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ni-694. Producer or source: Nippon Yakin Kogyo Company Ltd.

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