2016/08/02 by Adam J. Ready, Ready, Adam J., Adrian P. Sutton +5
Materials Science · #FOS: Physical sciences #Magnesium Alloys: Properties and Applications #Materials Science (cond-mat.mtrl-sci) #Microstructure and mechanical properties #Titanium Alloys Microstructure and Properties
paper · pdf · doi:10.48550/arxiv.1608.00923
openalex publication_date 2016/08/02 · openalex created_date 2022/09/15 · openalex updated_date 2026/07/28
Using first principles methods we calculated the entire γ-surface of the first order pyramidal planes in α-titanium. Slip on these planes involving dislocations with c + a dislocations is one means by which α-titanium polycrystals may supplement slip on prism planes with a-type Burgers vectors to maintain ductility. We find two stable intrinsic stacking faults with relatively small energies. We show that dissociation of c + a dislocations into two dislocations with Burgers vectors (c + a)/2 is not possible in α-titanium because there is no stable stacking fault at (c + a)/2. Instead we propose a possible dissociation of a c + a dislocation into three partial dislocations separated by the two intrinsic faults we have identified.