Dynamic Strain Aging of Austenitic High Nitrogen Cr-Ni and Cr-Mn Steels

Temperature effect on deformation mechanisms and mechanical properties of a high manganese C+N alloyed austenitic stainless steel

“…In comparison, the hardening contribution due to mechanical twinning is almost completely suppressed in lower C TWIP alloys at 200°C, such as Fe-17Cr-7Mn-3Ni-0.2N [43] and Fe-25Mn-3Al-3Si [44,69], which results in a remarkable decrease in TE. Additional hardening in the athermal range is associated to DSA [55,101] generated by interactions of dislocations with SRO and planar defects [102]. According to Almeida et al [103] DSA occurs even without macroscopic consequence of serrated flow, supporting the presence of DSA mechanism in the Fe-14Cr-16Mn-0.3C-0.3N alloy despite of the homogenous flow behavior.…”

Spatio-temporal characteristics of the Portevin–Le Châtelier effect in austenitic steel with twinning induced plasticity

“…Allain et al (2008) observed that the DSA contribution to work hardening is limited in a Fe-22Mn0.6wt%C steel and that visible defects noted on tensile specimens do not appear on stampings. Dynamic strain aging and the PLC effect have been the subjects of numerous theoretical and experimental studies of steel deformation (Shi and Northwood, 1995;de Almeida et al, 1998;Jenkins and Smith, 1969;Basinski 1957;Ilola et al, 1999;Bayraktar et al, 2004;Serajzadeh, 2003;Hong et al, 2005;de Almeida and Emygdio, 1994;Cuddy and Leslie, 1972).…”

Mechanical Properties of (20–30)Mn12Cr(0.56–0.7)CN Corrosion Resistant Austenitic TWIP Steels

“…DSA in Cr–Mn and Cr–Ni austenites is manifested at room temperature in periodical serrations (Type A), whereas, at temperatures of 200°C and above type B and C (with increasing amplitude) are visible and occur as soon as plastic deformation starts 18. DSA in Hadfield steel is accompanied by type A serrations at −10°C, type B at room temperature and type C at 125°C 19.…”