Corrosion Testing for Aluminum Alloy Selection in Automotive Radiators

2009 ◽  
pp. 83-83-24 ◽  
Author(s):  
RE Beal ◽  
R El-Bourini
Keyword(s):  
Aluminum Alloy ◽  
Corrosion Testing

SUSCEPTIBILITY AT THE CORROSION OF 7150-T77 ALUMINUM ALLOY USED IN AVIATION INDUSTRY

2019 ◽  
Vol 33 (2) ◽  
pp. 59-65
Author(s):  
Vasile Hotea ◽  
Keyword(s):  
Aluminum Alloy ◽  
Corrosion Test ◽  
High Strength ◽  
Corrosion Testing ◽  
Aviation Industry ◽  
Corrosion Tests ◽  
Exfoliation Corrosion ◽  
Strength Alloy

In this work, has been performed the susceptibility to corrosion on high strength alloy of 7150-T77 at the EXCO corrosion test according to ASTM G34-01 standard which covers a procedure for exfoliation corrosion testing of 7XXX series aluminum alloys.Corrosion it can be an important source of limiting the life of the aircraft body where alloys from the 7xxx series are used, which is why they are systematically subjected to corrosion tests in dedicated laboratories.

Stress Corrosion Testing of 7079-T6 Aluminum Alloy in Seawater Using Smooth and Precracked Specimens

1969 ◽  
Vol 91 (4) ◽  
pp. 565-569 ◽  
Author(s):  
H. P. Chu ◽  
G. A. Wacker
Keyword(s):  
Aluminum Alloy ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Corrosion Cracking ◽  
Corrosion Testing ◽  
Directional Characteristics ◽  
Bend Tests

Stress corrosion cracking of a 7079-T6 aluminum alloy in seawater was investigated by bend tests of smooth and precracked specimens. It was found that there was a general agreement between results of the two methods. The susceptibility of this alloy to inter-granular cracking was shown to depend on its directional characteristics. The use of precracked specimens for stress corrosion testing is discussed.

Effective Service Life Assessment of Aluminum Alloy Alclad Corrosion Protection under Equivalent Accelerated Condition

2010 ◽  
Vol 146-147 ◽  
pp. 1708-1711
Author(s):  
Dan Feng Zhang ◽  
Xiao Ming Tan ◽  
Yue Liang Chen ◽  
Fu Juan Sun
Keyword(s):  
Aluminum Alloy ◽  
Service Life ◽  
Corrosion Damage ◽  
Corrosion Testing ◽  
Life Assessment ◽  
Aircraft Structure ◽  
Field Exposure ◽  
Accelerated Corrosion ◽  
Accelerated Corrosion Testing ◽  
Effective Service

It’s very important to describe the corrosion damage evolvement rule of the aircraft structure for evaluating the calendar life. According to equivalent accelerated corrosion testing spectrum based on key environment data, the corrosion damage of accelerating corrosion testing for 7d is equivalent to that of field exposure for 1a. The new aluminum alloy of aircraft structure has been accelerated tested for 10a. Through KH-7700 3-D optical microscope, corrosion damage was inspected and measured. The result shows that some independent pits generate on the alclad surface in the first, and then many pits interconnect leading to the bigger holes. The effective service life of the aluminum alclad was gotten under equivalent accelerated corrosion testing condition.

Techniques for Transmission Electron Microscopy of Fiber-Matrix Interfaces in Aluminum Alloy-Boron Composites by Ion Erosio

1971 ◽  
Vol 29 ◽  
pp. 204-205
Author(s):  
G. G. Shaw
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Aluminum Alloy ◽  
Electron Beam ◽  
Pure Aluminum ◽  
Ion Milling ◽  
Transmission Electron ◽  
Fiber Matrix ◽  
Ion Erosion ◽  
Row Of Fibers

The morphology and composition of the fiber-matrix interface can best be studied by transmission electron microscopy and electron diffraction. For some composites satisfactory samples can be prepared by electropolishing. For others such as aluminum alloy-boron composites ion erosion is necessary.When one wishes to examine a specimen with the electron beam perpendicular to the fiber, preparation is as follows: A 1/8 in. disk is cut from the sample with a cylindrical tool by spark machining. Thin slices, 5 mils thick, containing one row of fibers, are then, spark-machined from the disk. After spark machining, the slice is carefully polished with diamond paste until the row of fibers is exposed on each side, as shown in Figure 1.In the case where examination is desired with the electron beam parallel to the fiber, preparation is as follows: Experimental composites are usually 50 mils or less in thickness so an auxiliary holder is necessary during ion milling and for easy transfer to the electron microscope. This holder is pure aluminum sheet, 3 mils thick.

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