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Threshold stress intensity

Crack Initiation and the Threshold Stress intensity Factor Range... [Pg.1256]

Fig. 8.98 Threshold stress intensities from pre-cracked specimen tests, and threshold stresses from plain specimen tests, for a Mg-7A1 alloy in various structural conditions tested in chromate-chloride solution (after Wearmouth ei al )... Fig. 8.98 Threshold stress intensities from pre-cracked specimen tests, and threshold stresses from plain specimen tests, for a Mg-7A1 alloy in various structural conditions tested in chromate-chloride solution (after Wearmouth ei al )...
A-2.8.1 Pressure and Temperature. An important general trend is that structural metals become more susceptible to hydrogen embrittlement as hydrogen gas pressure increases. An example of this trend is the measured threshold stress intensity factor, Km, as a function of gas pressure for low-alloy steels. Kjh decreases as gas pressure increases. Increasing hydrogen gas pressure enhances the concentration of dissolved hydrogen in materials, which promotes hydrogen embrittlement. [Pg.231]

Equation (18) is very similar to the result of Eqn. (17) which was derived for crack growth under elastic field control. From the result of Fig. 10.4, it is clear that Kmin represents the threshold stress-intensity factor for creep crack growth. Kmin is proportional to eceVFc so that an increase in ec and lc leads to an increase in the threshold stress-intensity factor. The creep crack growth rate, on the other hand, is decreased in the asymptotic limit by an increase in lc and ec, as would be expected. [Pg.344]

Standard Test Method for Determining Threshold Stress Intensity Factor for Environment-Assisted Cracking of Metallic Materials, Standard E 1681-03, ASTM International, West Conshohocken, PA, 2003. [Pg.178]

Effect of molybdenum content on stress-corrosion threshold stress intensity of austenitic stainless steels. Source Ref 166... [Pg.419]

Effect of yield strength on the threshold stress intensity factor (Kjh) for crack propagation in hydrogen gas (a) low-alloy steels [5] and (b) austenitic steels [17]. [Pg.57]

Effect of gas pressure on threshold stress-intensity factor for crack propagation in hydrogen gas Kj ) or fracture toughness in hydrogen gas (XJh) 15, 30, 32]. The data are for low-alloy steels (open symbols), while the data are for carbon steel (filled symbols). [Pg.59]

Threshold stress intensity for crack growth in environmental tests. [Pg.143]

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See also in sourсe #XX -- [ Pg.118 , Pg.129 , Pg.413 , Pg.414 , Pg.416 , Pg.428 , Pg.431 ]

See also in sourсe #XX -- [ Pg.29 ]



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