Systematic investigation of the deformation mechanisms of a γ-TiAl single crystal.

08:00 EDT 12th October 2018 | BioPortfolio

Summary of "Systematic investigation of the deformation mechanisms of a γ-TiAl single crystal."

We propose a theoretical framework to predict the deformation mechanism of the γ-TiAl single crystal without lattice defects by combining the generalized stacking fault energy and the Schmid factor. Our theory is validated against an excellent testbed, the single crystal nanowire, by correctly predicting four major deformation mechanisms, namely, ordinary slip, super slip, twinning, and mixed slip/fracture observed during the tensile and compressive tests along 10 different orientations using molecular dynamics simulations. Interestingly, although lattice defects are not taken into account, the theoretical predictions match well with existing experiments on bulk specimen with only a few exceptions; the exceptions are discussed based on the size-dependent deformation mechanism in the presence of preexisting dislocation sources. We expect that the method in this paper can be generalized to study various ductile intermetallic crystals where conventional Schmid law does not hold well.


Journal Details

This article was published in the following journal.

Name: Scientific reports
ISSN: 2045-2322
Pages: 15200


DeepDyve research library

PubMed Articles [21830 Associated PubMed Articles listed on BioPortfolio]

The effect of interface atomic structure on the deformation mechanisms of Ti2AlN/TiAl composite under nanoindentation using MD simulations.

In this study, we conduct molecular dynamics simulations to investigate the effect of interface atomic structure on the deformation mechanisms of Ti2AlN/TiAl composite under nanoindentation. It is fou...

Toward long-term stability: single crystal alloys of cesium-containing mixed cations and mixed halides perovskite.

Perovskite solar cells are strong competitor for silicon-based ones, but suffer from poor long-term stability for which the intrinsic stability of perovskite materials is of primary concern. Herein, w...

Molecular deformation, charge flow, and sponge-like behavior in anion-π {M(CN)42-;HAT(CN)6} (M = Ni, Pd, Pt) supramolecular stacks.

We present the synthesis, crystal structures, spectroscopic characterization and comprehensive quantum-chemical calculations for the novel series of anion-π hybrid salts (XPh4)2[M(CN)4][HAT(CN)6]·3M...

Hierarchical porous TiO single crystals templated from partly glassified polystyrene.

Hierarchical macro-mesoporous anatase TiO single crystal is one-pot synthesized in an EtOH-HO system using polystyrene (PS) as the single porogen both for macropore and mesopore and TiF as the titaniu...

Single-Crystal Poly4-(4,4-dihexadecyl-4H-cyclopenta1,2-b:5,4-b'dithiophen-2-yl)-alt-1,2,5thiadiazolo3,4-cpyridine Nanowires with Ultrahigh Mobility.

We fabricated single-crystal poly[4-(4,4-dihexadecyl-4H-cyclopenta[1,2-b:5,4-b']-dithiophen-2-yl)-alt-[1,2,5]thiadiazolo-[3,4-c]pyridine] (PCDTPT) nanowires with ultrahigh mobility using a liquid-brid...

Clinical Trials [6694 Associated Clinical Trials listed on BioPortfolio]

Co-crystal E-58425 vs Tramadol and Celecoxib for Moderate to Severe Acute Pain After Bunionectomy. Phase III Clinical Trial.

This is a Phase 3, randomized, double-blind, controlled, parallel-group, multicenter clinical trial with co-crystal E-58425 compared to tramadol, to celecoxib, and to placebo. The primary ...

The Use of Myocardial Deformation Imaging

Myocardial deformation imaging allows analysis of myocardial viability in ischemic left ventricular dysfunction. This study will evaluate the predictive value of myocardial deformation ima...

Usefulness of Myocardial Deformation Imaging for Trastuzumab-induced Cardiotoxicity

Trastuzumab prolongs survival in patients with human epidermal growth factor receptor type 2-positive breast cancer. Sequential left ventricular (LV) ejection fraction (EF) assessment has ...

Subtle Myocardial Deformation Abnormalities in Asymptomatic Nf-1 Patients

Subtle myocardial deformation abnormalities in asymptomatic nf-1 patients: is cardiac screening needed?

Effectiveness of Liquid Crystal Contact Thermography in Detecting Pathological Changes in Female Breasts

The study is designed to evaluate the effectiveness of liquid crystal contact thermography in detecting pathological changes in female breasts compared to standard diagnostic methods.

Medical and Biotech [MESH] Definitions

Multi-step systematic review process used for improving safety by investigation of incidents to find what happened, why it happened, and to determine what can be done to prevent it from happening again.

A central nervous system stimulant and sympathomimetic with actions and uses similar to DEXTROAMPHETAMINE. The smokable form is a drug of abuse and is referred to as crank, crystal, crystal meth, ice, and speed.

The systematic study of the structure and function of the complete set of glycans (the glycome) produced in a single organism and identification of all the genes that encode glycoproteins.

The use of a quartz crystal microbalance for measuring weights and forces in the micro- to nanogram range. It is used to study the chemical and mechanical properties of thin layers, such as polymer coatings and lipid membranes; and interactions between molecues.

Processes orchestrated or driven by a plethora of genes, plant hormones, and inherent biological timing mechanisms facilitated by secondary molecules, which result in the systematic transformation of plants and plant parts, from one stage of maturity to another.

Quick Search


DeepDyve research library

Relevant Topic

Osteoporosis is a disease in which the bones become extremely porous, are subject to fracture, and heal slowly, occurring especially in women following menopause and often leading to curvature of the spine from vertebral collapse. Follow and track&n...

Searches Linking to this Article