Comments on the Dutton-Puls model: Temperature and yield stress dependences of crack growth rate in zirconium alloys

▶ This study shows first that temperature and yield stress dependences of crack growth rate in zirconium alloys can analytically be understood not by the Dutton-Puls model but by Kim's new DHC model. ▶ It is demonstrated that the driving force for DHC is ΔC, not the stress gradient, which is the core of Kim's DHC model. ▶ The Dutton-Puls model reveals the invalidity of Puls' claim that the crack tip solubility would increase to the cooling solvus.