An Analysis of High-Temperature Crack Growth in Type 308 Cb Stainless Steel and Its Weldment
Author:
Radhakrishnan V. M.1,
Kamaraj M.1
Affiliation:
1. Dept. of Metallurgical Engineering, Indian Institute of Technology, Madras, India
Abstract
Creep crack growth behavior of type 308 Cb austenitic stainless steel and its weldment has been studied in the temperature range of 875 to 1075 K under plane stress condition. The creep crack growth (CCG) rate has been correlated with parameters like stress intensity factor, K, net section stress and energy rate line integral C*. Among these parameters C* appears to describe well the CCG rate in both the cases of base metal and weldment. The rupture time tr of the cracked material has been found to be related to the energy rate line integral C*s in the steady-state condition, given by a relation of the type C*s · tr = constant.
Publisher
ASME International
Subject
Mechanical Engineering,Mechanics of Materials,Safety, Risk, Reliability and Quality