Evolution of microalloyed steels since microalloying '75 with specific emphasis on linepipe and plate
In the four decades since the Conference Microalloying ’75 was held in Washington, DC, there has been an avalanche of development and application in almost all steel products but most notably in automotive, plate and linepipe steels. Revolutions in steelmaking, casting, rolling and accelerated cooling have all contributed to the adoption of this versatile, economical class of steel. Today it is estimated that fully seventeen percent of all steel produced relies on microalloying additions and related metallurgical technology. This paper describes and summarizes four decades of evolution of HSLA steels since 1975 with special reference to linepipe and plate.