Delayed cracking prevention during drawing of high strength steel

A method for improving resistance for delayed cracking in a metallic alloy, comprising:

• (a) supplying a metal alloy comprising at least 50 atomic % iron and at least four or more elements selected from Si, Mn, B, Cr, Ni, Cu, Al or C and melting said alloy and cooling at a rate of ≤250 K/s or solidifying to a thickness of ≥2.0 mm and forming an alloy having a Tm and matrix grains of 2 to 10,000 μm;
• (b) processing said alloy into sheet with thickness ≤10 mm by heating said alloy to a temperature of ≥650° C. and below the Tm of said alloy and stressing of said alloy at a strain rate of 10−6 to 104 and cooling said alloy to ambient temperature;
• (c) stressing said alloy at a strain rate of 10−6 to 104 and heating said alloy to a temperature of at least 600° C. and below Tm and forming said alloy in a sheet form with thickness ≤3 mm having a tensile strength of 720 to 1490 MPa and an elongation of 10.6 to 91.6% and with a magnetic phases volume % (Fe %) from 0 to 10%;
• wherein said alloy formed in step (c) indicates a critical draw speed (SCR), wherein drawing said alloy at a speed below SCR results a first magnetic phase volume V1 and wherein drawing said alloy at a speed equal to or above SCR results in a magnetic phases volume V2, where V2<V1.