Effect of alloying elements on the cracking resistance of structural steels intended for low-temperature application

The cracking resistance of structural chromium-nickel-molybdenum steels are analyzed under delayed fracture conditions. The fracture surfaces of steel specimens and the effect of molybdenum and impurities (phosphorus, tin) on their cracking resistance are investigated by Auger electron spectroscopy...

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Bibliographic Details
Published in:Russian metallurgy Metally 2010-05, Vol.2010 (5), p.412-417
Main Authors: Ermakov, B. S., Vasil’ev, A. V., Karginova, V. V., Andreev, A. K.
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Cracking (fracturing)
Emission analysis
Fracture mechanics
Fracture surfaces
Impurities
Materials Science
Metallic Materials
Molybdenum
Spectral emissivity
Structural steels
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Summary:The cracking resistance of structural chromium-nickel-molybdenum steels are analyzed under delayed fracture conditions. The fracture surfaces of steel specimens and the effect of molybdenum and impurities (phosphorus, tin) on their cracking resistance are investigated by Auger electron spectroscopy and emission spectral microanalysis. The positive influence of molybdenum on an increase in the cracking resistance is shown to increase as its content increases to 0.6%; molybdenum does not influence the cracking resistance at its content of 0.6–0.98%, and this effect decreases at a molybdenum content higher than 0.98%.
ISSN:0036-0295
1555-6255
1531-8648
DOI:10.1134/S0036029510050101