Effect of prior heat treatment on wear behaviour of 0·23% carbon dual phase steel

AbstractThe present study is aimed at understanding the effect prior heat treatment on the high-stress abrasive wear response of 0·.23% carbon dual phase steel. As-received steel was subjected to annealing, normalising and hardening treatment prior to actual dual phase heat treatment. These steels along with the as-received steel were intercritically annealed at 745°C followed by water quenching in order to produce dual phase microstructures. Abrasion tests were carried out at varying sliding distances with a 40 μm abrasive and at 7 N applied load. Wear test at varying loads were also performed for the steel that showed maximum wear resistance. Dual phase treatment resulted in improved overall wear response. The wear resistance for the steel with prior annealing treatment (DPLA-1) and for the steel with prior hardening treatment (DPLA-3) improved over the entire range of sliding distance. It was also found that the wear rate increased with applied load for DPLA-1 steel.Cette etude vise a comprendre l’effe...