Slip band–grain boundary interactions in commercial-purity titanium

By Yi Guo, T. Ben Britton, A. Wilkinson. 2014

359 citations recorded by the source corpus.

Abstract The interaction between slip bands and grain boundaries in commercial-purity titanium was examined using cross-correlation-based electron backscatter diffraction. At a low strain level, three types of interactions were observed: blocked slip band with stress concentration; slip transfer; and blocked slip band with no stress concentration. The stress concentration induced by the blocked slip band was fitted with Eshelby’s theoretical model, from which a Hall–Petch coefficient was deduced. It was found that the Hall–Petch coefficient varies with the individual grain boundary. We investigated the geometric alignment between the slip band and various slip systems to the neighbouring grain. Stress concentration can be induced by the blocked slip band if the slip system is poorly aligned with 〈 a 〉 prismatic, pyramidal or basal slip systems in the neighbouring grain. Transfer of slip across the boundary occurs when there is good alignment on 〈 a 〉 prismatic or 〈 a 〉 pyramidal slip systems. Other stress-relieving mechanisms are possible when the best alignment is not with the slip system that has the lower critical resolved shear stress.

Subfields: Electrical and Electronic Engineering, Materials Chemistry, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/b4eb6c9dbbf4e1299b95fe1754269e02b043c4e2

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Citations in the corpus

Review on slip transmission criteria in experiments and crystal plasticity models (2015, methodology): “Related articles commonly include a brief overview on selected works from the experimental literature (see for example [31, 49, 66, 89]).”
Slip transfer across phase boundaries in dual phase titanium alloys and the effect on strain rate sensitivity (2018, background): “…slip transfer across grain boundaries, such as nanoindentation (Britton et al., 2009), high-resolution electron backscatter diffraction (HR-EBSD) (Guo et al., 2014), low cycle fatigue loading (Joseph et al., 2018), pillar compression (Suri et al., 1999), atomistic (Sangid et al., 2011; Spearot…”
Incipient slip and long range plastic strain localization in microtextured Ti-6Al-4V titanium (2016, background): “SEM-based surface slip trace analysis in strained samples showed a dependence on slip transmission between a and b requiring aligned slip planes with high Schmid factors for both phases [13,14].”
On the mechanistic basis of deformation at the microscale in hexagonal close-packed metals (2015, background): “[107], who examined multiple examples of slip bands impinging on GBs.”