Author: Robin ShippPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Stress-corrosion Failure in high strength aluminium-zinc-magnesium alloys
Author: Robin ShippPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Stress-corrosion Cracking in High Strength Steels and in Titanium and Aluminum Alloys
Author: Benjamin Floyd BrownPublisher:
ISBN:
Category : Aluminum alloys
Languages : en
Pages : 388
Book Description
Stress-corrosion Cracking of Aluminum Alloys
Author: F. H. HayniePublisher:
ISBN:
Category : Aluminum alloys
Languages : en
Pages : 52
Book Description
This report deals with the stress-corrosion cracking of aluminum alloys, and it represents an effort by DMIC to expand on the information contained in DMIC Memorandum 202, 'Stress-Corrosion Cracking of Aluminum Alloys', dated February 15, 1965. DMIC Report 228 begins by presenting a comprehensive definition of stress-corrosion cracking. This is followed by sections dealing with (1) the historical development and growth in awareness of the problem, (2) the mechanisms involved, and (3) the theory of stress-corrosion cracking. A section on experimental techniques is presented. These techniques include test methods used to determine the susceptibility of alloys to stress-corrosion cracking, as well as more refined methods of studying the fundamental mechanisms of the problem. Different evaluation methods, applicable to obtaining the different objectives of stress-corrosion testing, are also presented. All of the foregoing serve as background to the sections on stress-corrosion-cracking behavior of aluminum alloys and preventive measures. (Author).
Mechanism of Stress Corrosion Cracking in Medium Strength Aluminium-zinc-magnesium Alloy System
Author: M. L. MehtaPublisher:
ISBN:
Category : Alloys
Languages : en
Pages :
Book Description
Aluminium-zinc-magnesium Alloys, with Special Reference to Their Failure by Stress-corrosion
Author: Henry Jeffrey BlewdenPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
The Stress Corrosion of Metals
Author: Hugh Lynn LoganPublisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 328
Book Description
The Constitution, Stress-corrosion and Other Properties of High Strength Aluminium Alloys Containing Magnesium and Zinc
Author: B. T. HouldenPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The Development Of Aluminium -zinc- Magnesium Alloys For Superior Stress Corrosion Resistance
Author: Dauskardt Reinhold HorstPublisher:
ISBN:
Category :
Languages : en
Pages : 412
Book Description
Stress Corrosion Cracking of Welded Aluminium-zinc-magnesium Alloys
Author: Simon Richard TraceyPublisher:
ISBN:
Category : Aluminum-magnesium-zinc alloys
Languages : en
Pages :
Book Description
Stress-Corrosion Cracking of High-Strength Aluminum Alloys
Author: E. N. PughPublisher:
ISBN:
Category :
Languages : en
Pages : 13
Book Description
A study has been made of the mechanism of hydrogen embrittlement (HE) in Al-Zn-Mg alloys, and of the role of hydrogen in the intergranular stress-corrosion cracking (I-SCC) of these alloys. Up to 300 ppm (1 at pct) hydrogen was introduced into a high-purity Al-5.6Zn-2.6Mg alloy, either by room temperature polishing with aqueous slurries of alumina particles or by exposure to water-vapor-saturated air (WVSA) at 70 C, and subsequent tensile tests (stress rate approx 0.0001/s) in inert environments caused brittle intergranular fracture. Embrittlement was found to be reversible, the tensile properties being completely restored when the hydrogen was outgassed. At low hydrogen contents, embrittlement was suppressed by the use of high strain rates (approx 0.01/s), but could not be suppressed by impact testing at large hydrogen concentrations. The intergranular fracture surfaces were observed to be associated with a fragmented layer, and electron-diffraction experiments indicated that it corresponded to a hexagonal aluminum hydride, Al H3, with a = 2.90 A and c = 4.55 A. This hydride, considered to be stress-induced, was unstable in laboratory air, slowly decomposing to FCC Al. It is concluded that internal HE in this alloy occurs by repeated cycles of the formation and rupture of this brittle hydride.
