1CSIR-National Metallurgical Laboratory, Jamshedpur, India
R.V.S. College of Engineering & Technology, Jamshedpur, India
Online published on 1 March, 2014.
High strength low alloy (HSLA) steels have provided better mechanical properties and greater resistance to atmospheric corrosion than conventional carbon steels. HSLA steels have yield strength greater than 275 MPa. Chemical compositions are varied to meet mechanical property requirements, e.g. adequate formability and weldability of sheets and plates require 0.05–0.25% C, 2% Mn and small quantities of different combinations from Cr, Ni, Mo, Cu, N, V, Nb, Nb, Ti and Zr. Interplay of microaddition, their segregation behaviour and strengthening have been studied for long products. Precipitation in cast, reheated and heat-treated state has been reviewed in response to effects of inter-depletion of interstitial constituents and contribution of microalloy elements.
Alloyed steel, Cleavage fracture, Austenite grain growth, Phase equilibrium, Texture, Static recovery, Corrosion, Stress corrosion, Cracking, Degradation, Precipitates, Strain aging, High strength low alloy steel, Vanadium, Cast steels
