Influence of processing on the roll forming characteristics of recovery annealed steel

Roll forming (including corrugating) of high strength steel has for many years been treated as an art rather than a science. This work, by using analysis at both the microscopic and standard mechanical level, has demystified the production of these high strength steels, and has helped point the direction for further development of these efficient construction products.

Ultrafine ferrite formation in steels through thermomechanical processing

The main aim of this study was to investigate the critical conditions for the formation of ultrafine grain structures using hot torsion and wedge rolling techniques. In addition, the effect of thermomechanical parameters and steel composition on the critical conditions for ultrafine grain structure formation has been systematically evaluated.

Low strain processing of LC and ULC steels

Temper rolling and tension levelling are commonly used to manufacture flat rolled steel. Both processes lengthen the steel at strains up to 3% by applying a load and stretching the strip. By latering the balance between the load and the tension the formability of the low carbon and ultra low carbon steel may be optimised.

Press forming performance of galvanneal coated steel

This project quantified the press formability of galvanneal coated steel. A coil of galvanneal coated steel was produced containing various coating structures. Using different lubricants, the powdering, friction and forming properties were determined. It was found that optimum formability was obtained by effective lubrication while galvanneal coating structure controlled powdering resistance.