High Temperature Fatigue Crack Growth Behavior of Ti-6Al-4V
Document Type
Article
Publication Date
1-1-2002
Department
Mechanical Engineering
Abstract
Experimental evaluation of high temperature, Fatigue Crack Growth Rate (FCGR) data for Ti-6Al-4V, a titanium alloy, is presented. The FCGR data were measured at room temperature, 175, 230, 290 and 345°C using the Direct Current Potential Difference (DCPD) technique. Compact Tension (CT) specimens were used in the program and crack growth rates (da/dN) vs. Mode I stress intensity factor ranges (AK) were plotted as a function of temperature. A temperature rise from 175 to 345°C did not cause a substantial increase in crack growth rates within the Stage II region where a linear relationship describes the behavior. Formation of secondary cracks, observed at higher temperatures, may have slowed the crack propagation as observed in the fractography.
DOI
10.1515/HTMP.2002.21.4.229
First Page
229
Last Page
236
Publication Title
High Temperature Materials and Processes
Recommended Citation
Arakere, N. K., Goswami, T., Krohn, J. A., & Ramachandran, N. (2002). High temperature fatigue crack growth behavior of Ti-6Al-4V. High Temperature Materials and Processes 21(4): 229 - 236.
