Effect of marforming on the strength of steel

Soviet progress in thermomechanical treatment of metals

“…A lthough LTTMT + SA has a higher strength than HTTMT + SA , it was found that for low alloy steel 18Kh2N4VA , HTTMT + SA had a b e t t e r combination of properties (strength and ductility) at a SA deformation almost twice that for LTTMT + SA(80). Strain-aging treatments alone lead to very high strength levels for martensitic steels , but at reduced ductility and toughness (122). In addition , the deformation during preliminary processing and strain aging Inust be in the same direction for maximum strengthening .…”