Structure, properties, and resistance to stress-corrosion cracking of a nitrogen-containing austenitic steel strengthened by thermomechanical treatment.

Autor: Mushnikova, S., Kostin, S., Sagaradze, V., Kataeva, N.
Zdroj: Physics of Metals & Metallography; Nov2017, Vol. 118 Issue 11, p1155-1166, 12p
Abstrakt: The results of comparative studies of the structure, mechanical properties, and resistance to stresscorrosion cracking (SCC) in the chloride solutions of a Cr-Mn-Ni austenitic nitrogen-containing steel (20Cr-6Ni-11Mn-1.5Mo-N-V-Nb) produced with the use of different regimes of the high-temperature thermomechanical treatment (HTTMT) have been presented. An unfavorable effect of the grain-boundary precipitates of the nitride phase on the impact toughness and resistance to SCC has been found. It has been shown that the strengthening of nitrogen-containing steel upon HTTMT, which ensures an increase in the yield stress by 1.8 times compared to the austenitized state, does not decrease the resistance to SCC. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
Externí odkaz: