Environmental stress-corrosion cracking

High-density polyethylene is very susceptible to environmental stress corrosion cracking, especially if used at the high end of the temperature range. 

Environmental stress corrosion cracking (ESCC) of glass fibres... 

Environmental stress corrosion cracking of glass fibre composites [33 2]... 

Figure 3.12 Schematic failure map for a unidirectional E-glass composite under acidic environmental stress corrosion cracking conditions, illustrating the material variables, t, is the failure time in minutes under a constant tensile load [33]...

Van den Emde CAM, Van den Dolder A (1991) Comparison of environmental stress corrosion cracking in different glass fibre reinforced thermoset composites. In Cardon AH, Verchery G (eds) Durability of polymer based composite systems for structmal applications. Elsevier Applied Science, New York, pp 408 17... 

General description. In incomplete fusion, complete melting and fusion between the base metal and the weld metal or between individual weld beads does not occur (Fig. 15.8). Incomplete fusion that produces crevices or notches at surfaces can combine with environmental factors to induce corrosion fatigue (Chap. 10), stress-corrosion cracking (Chap. 9), or crevice corrosion (Chap. 2). See Fig. 15.9. 

Chul Kim, U. R. and van Rooyen, D., Strain rate and temperature effects on the stress corrosion cracking of Inconel 600 steam generator tubing in the (PWR) primary water conditions , Proc. 2nd Int. Conf. on Environmental Degradation of Materials in Nuclear Power Systems-VIalet Reactors, Monterey, USA, 9-12 Sept. 1985, American Nuclear Society, pp. 448-55 (1986)... 

All the above modes of fracture are affected by the environment around the crack tip. This behaviour is typified by the phenomenon of stress-corrosion cracking where a crack, which is subjected to a subcritical stress concentration, will grow in a corrosive environment when /f, the critical stress concentration for stress-corrosion cracking). Therefore, to predict accurately the occurrence of cracking and crack growth rate, not only the materials properties are required but also information on the immediate environmental conditions. 

Avoid stresses (magnitude and type) and environmental conditions that lead to stress-corrosion cracking, corrosion fatigue or fretting corrosion. 

Environmental Cracking The problem of environmental cracking of metals and their alloys is very important. Of all the failure mechanism tests, the test for stress corrosion cracking (SCC) is the most illusive. Stress corrosion is the acceleration of the rate of corrosion damage by static stress. SCC, the limiting case, is the spontaneous cracking that may result from combined effects of stress and corrosion. It is important to differentiate clearly between stress corrosion cracking and stress accelerated corrosion. Stress corro-... 

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