Fracture and fatigue in additively manufactured metals

TH Becker, P Kumar, U Ramamurty - Acta Materialia, 2021 - Elsevier
Additive manufacturing (AM) of metallic components offers many advantages over
conventional manufacturing methods, most notably design freedom at little material waste …

[HTML][HTML] Recent progress in the simulation of microstructure evolution in titanium alloys

J Zhang, X Li, D Xu, R Yang - Progress in Natural Science: Materials …, 2019 - Elsevier
Titanium alloys (Ti-alloys) have complicated multiscale hierarchical structures that enabled a
variety of excellent mechanical properties, such as strength, ductility, fatigue and creep …

Microstructural optimization through heat treatment for enhancing the fracture toughness and fatigue crack growth resistance of selective laser melted Ti6Al4V alloy

P Kumar, U Ramamurty - Acta Materialia, 2019 - Elsevier
The yield strength (σ y) of Tisingle bond6Alsingle bond 4V alloy, additively manufactured via
selective laser melting (SLM) of powder beds, can exceed 1000 MPa while possessing a …

Micro-and meso-structures and their influence on mechanical properties of selectively laser melted Ti-6Al-4V

P Kumar, O Prakash, U Ramamurty - Acta Materialia, 2018 - Elsevier
The tensile properties, mode I fracture toughness (K Ic), fatigue crack growth behavior, and
unnotched fatigue strength of additively manufactured Ti-6Al-4V (Ti64) alloy using selective …

[HTML][HTML] Microstructural engineering of a dual-phase Ti-Al-V-Fe alloy via in situ alloying during laser powder bed fusion

M Chen, S Van Petegem, Z Zou, M Simonelli… - Additive …, 2022 - Elsevier
Abstract When Ti-6Al-4V is processed by laser powder bed fusion (L-PBF), acicular
martensitic α'-Ti grains are formed within the columnar prior β-Ti grains, resulting in inferior …

ω-Assisted nucleation and growth of α precipitates in the Ti–5Al–5Mo–5V–3Cr–0.5 Fe β titanium alloy

S Nag, R Banerjee, R Srinivasan, JY Hwang, M Harper… - Acta Materialia, 2009 - Elsevier
This paper discusses the structural and compositional changes at the nanometer scale
associated with the nucleation and growth of α precipitates in the β titanium alloy Ti-5553 (Ti …

Tuning the scale of α precipitates in β-titanium alloys for achieving high strength

SA Mantri, D Choudhuri, T Alam, GB Viswanathan… - Scripta Materialia, 2018 - Elsevier
The strength of a commercial β‑titanium alloy was tuned by systematically controlling the
size-scale of α precipitation via two-step heat treatments. While the first step annealing at …

Variant selection of grain boundary α by special prior β grain boundaries in titanium alloys

R Shi, V Dixit, HL Fraser, Y Wang - Acta materialia, 2014 - Elsevier
During β-processing of α/β and β titanium alloys, variant selection (VS) of grain boundary α
(GBα) is one of the key factors in determining the final transformation texture and mechanical …

Variant selection by dislocations during α precipitation in α/β titanium alloys

D Qiu, R Shi, D Zhang, W Lu, Y Wang - Acta Materialia, 2015 - Elsevier
Through three-dimensional phase-field simulations, dislocations are found to exert
significant influences on variant selection and subsequent development of transformation …

Variant selection during α precipitation in Ti–6Al–4V under the influence of local stress–A simulation study

R Shi, Y Wang - Acta materialia, 2013 - Elsevier
Variant selection of α (hexagonal close-packed, hcp) phase during its precipitation from β
(body-centered cubic, bcc) matrix plays a key role in determining the microstructural state …