Jb. Vogt et al., EFFECTIVE STRESSES AND MICROSTRUCTURE IN CYCLICALLY DEFORMED 316L AUSTENITIC STAINLESS-STEEL - EFFECT OF TEMPERATURE AND NITROGEN-CONTENT, Fatigue & fracture of engineering materials & structures, 16(5), 1993, pp. 555-564
This paper reports a study on the factors influencing dislocation slip
during cyclic deformation of 316L austenitic stainless steel. TEM inv
estigations show that low temperature and interstitial nitrogen conten
t favour planar slip and lead to higher effective stress values. Measu
rements of effective and internal stresses with the Handfield-Dickson
technique indicate that the contribution of nitrogen in the effective
component is more important than that of temperature. It is deduced th
at nitrogen acts through a pinning effect, while low temperature exert
s an effect on friction stress. The results also suggest that cyclic p
lasticity could modify the short range order leading to a redistributi
on of nitrogen.