THE EFFECT OF THE COOLING RATE ON THE YIELD BEHAVIOUR IN Ti-V-Al INTERSTITIAL FREE STEELS

Abstract

In this work, steel chemistry and the effects of the cooling rate on the yield behaviour in Ti-V-Al interstitial free steel were investigated experimentally for six grades of steel plate. The steels were austenitised at 950 ± 10 °C for 15 minutes and then cooled at different cooling rates in order to see the effect of different cooling rates on yield behaviour of interstitial free steels. Reducing the cooling rate reduces the yield point elongation and is conducive to continuous yielding. Grains are coarsening during slow cooling, this decrease yield strength of the steels. Vanadium additions allow discontinuous yielding over a wide range of cooling rates compared to Ti steels.

Keywords

• Soğuma hızı
• Arayer atomu içermeyen çelikler
• Akma noktası