Journal ArticleDOI
Linearly increasing stress test (LIST) for SCC research
TLDR
The linearly increasing stress test (list) as discussed by the authors is a load-controlled version of the CERT test, with the essential difference that the list test is load controlled whereas the Cert test is displacement-controlled.Abstract:
This paper presents a new testing apparatus for stress corrosion research. In this linearly increasing stress test (LIST) method, plain un-notched specimens are simultaneously exposed to an environment and subjected to an applied stress increasing linearly at a controlled rate. Experiments are repeated at various applied stress rates and the parameters measured include SCC initiation stress (the stress at which stress corrosion cracks start to propagate), fracture stress and average crack velocity. The LIST test is similar to the constant extension rate test (CERT) test, with the essential difference that the LIST test is load-controlled whereas the CERT test is displacement-controlled. The LIST test is particularly aimed at service conditions of loaded parts and structures; that is, service conditions described as load-controlled. This paper describes the design, construction and operation of the test apparatus and some typical results are given to illustrate its performance. Experiments have been conducted using as-quenched 3.5Ni-Cr-Mo-V turbine rotor steel specimens in aerated distilled water at 90 degrees C at stress rates varying from 0.00034 MPa s-1 to 2.08 MPa s-1.read more
Citations
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Journal ArticleDOI
Review of Recent Developments in the Field of Magnesium Corrosion
TL;DR: A review of recent developments in the field of Mg corrosion and putting those into context is provided in this paper, which includes considerations of corrosion manifestations, material influences, surface treatment, anodization, coating, inhibition, biodegradable medical applications, stress corrosion cracking, flammability, corrosion mechanisms for HP Mg, critical evaluation of corrosion mechanisms, and concluding remarks.
Journal ArticleDOI
A Critical Review of the Stress Corrosion Cracking (SCC) of Magnesium Alloys
N. Winzer,Andrej Atrens,Guang-Ling Song,Edward Ghali,W. Dietzel,Karl Ulrich Kainer,Norbert Hort,Carsten Blawert +7 more
TL;DR: In this article, the authors provide a foundation for the safe and effective use of magnesium (Mg) alloys, including practical guidelines for the service use of Mg alloys in the atmosphere and/or in contact with aqueous solutions.
Journal ArticleDOI
Corrosion mechanism applicable to biodegradable magnesium implants
TL;DR: In this paper, an overview of the aspects which determine the corrosion of Mg alloys: measurement details; impurity elements Fe, Ni, Cu and Co; second phases; surface films and surface condition and (v) stress corrosion cracking (SCC).
Journal ArticleDOI
Hydrogen embrittlement in different materials: A review
TL;DR: In this article, the authors deal with HE definition, mechanisms which causes HE, subcritical crack growth, the concentration of hydrogen measurement and prevention activities are discussed which act as a barrier for hydrogen diffusion.
Journal ArticleDOI
Recent Insights into the Mechanism of Magnesium Corrosion and Research Suggestions
Guang-Ling Song,Andrej Atrens +1 more
TL;DR: The opportunity to give an invited presentation to the Gordon Research Conference - Aqueous Corrosion in 2006 and reflections on the discussion at the conference were used to review our understanding of Mg corrosion mechanism, to generate new insights, to identify gaps in our knowledge and to identify research opportunities as discussed by the authors.
References
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Journal ArticleDOI
Stress Corrosion Cracking and Hydrogen Embrittlement of Iron Base Alloys
Journal ArticleDOI
Steam Turbine Failure at Hinkley Point ‘A’:
TL;DR: The catastrophic failure of Hinkley Point ‘A’ unit No. 5 in September 1969 was the result of spontaneous brittle fracture of a shrunk-on turbine disc, initiated by stress-corrosion cracking in the crown of a keyway in the disc bore.
Journal ArticleDOI
Room-Temperature Creep of High-Strength Steels
A. Oehlert,Andrej Atrens +1 more
TL;DR: In this paper, the authors investigated the room-temperature creep behavior of three high strength steels and found that the primary creep in all three alloys agreed well with the logarithmic creep law and the creep mechanism has been identified as pure dislocation creep.
Journal ArticleDOI
The stress corrosion cracking of as-quenched 4340 and 3.5NiCrMoV steels under stress rate control in distilled water at 90°C
S Ramamurthy,Andrejs Atrens +1 more
TL;DR: In this article, the authors present experimental results from the Linearly Increasing Stress Test (LIST) applied to the stress corrosion cracking (SCC) of as-quenched 4340 and 3.5NiCrMoV turbine rotor steel in aerated distilled water at 90°C.
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