Abstract
A model was proposed which explains subsurface cleavage facet formation in large grained, planar slip titanium alloys by the buildup of large hydrostatic stresses at the tip of long, blocked shear bands. These shear bands can result from creep deformation. Hydrogen is attracted to the hydrostatic stress field and can initiate a cleavage facet possibly by the locally increased hydrogen concentration or more likely by actual hydride formation and subsequent cracking of the hydride. The model is qualitatively consistent with several experimental results and implies that the evaluation of dwell debits in alloys must be conducted at stresses where some creep deformation is possible.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
