Fabrication of High Strength High Strength Composite Chromium Stainless Steel Strip with Reduced Planar Anisotropy

摘要

Process for producing steel strip of duplex structure wherein cold rolled strip of chomium stainless steel comprising, in addition to Fe, 10.0 % to 20.0% of Cr, to 1.15% of C, to 0.12% of N, the (C + N) being 0.02% to 0.20%, to 2.0% of Si, to 1.0% of Mn and to 0.6% of Ni, is continuously passed through a heating zone where it is heated to form a two-phase of ferrite and austenite and the heated strip is cooleda t a cooling rate sufficient to transform the austenite to martensite. The product has high strength and elongation reduced plane anisotropy and hardness of at least HV 200.