Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Self-Locking Screw01:16

Self-Locking Screw

2.7K
A square-threaded screw jack is a mechanical device widely used for lifting heavy loads or applying considerable force. One of the key features that can make a screw jack more effective and reliable is its self-locking capability.
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.
2.7K
Wedges01:24

Wedges

2.0K
A wedge is a simple machine that serves various purposes, such as adjusting the elevation of structural or mechanical parts, providing stability for heavy objects, and splitting a body into two parts. This versatile tool can amplify an applied force, making it easier to manipulate large or heavy objects.
Consider using a wedge to lift a heavy slab. Here, the wedge functions by converting the applied force into a much larger force directed almost perpendicular to the initial force. This...
2.0K
Frictional Forces on Screws01:17

Frictional Forces on Screws

1.8K
Screws are characterized by a helical ridge known as a thread wrapped around a cylindrical shaft. They are commonly used as fasteners to hold objects together or to transmit power and motion in machines. One type of screw that is particularly useful for transmitting power is the square-threaded screw.
A jack with a square-threaded screw is a mechanical device used to lift heavy loads by applying a force at its handle. When the force is applied, the screw turns, raising the load. The screw can...
1.8K
Pivot Bearings01:23

Pivot Bearings

2.5K
In mechanical systems, bearings are crucial in facilitating relative motion between two components while minimizing friction and wear. They help distribute various loads (radial, axial or a combination of both loads) across machinery parts, ensuring smooth and efficient operation.
A pivot bearing is a specialized type of bearing designed to support axial loads on a rotating shaft. The bearing surface, or the pivot, is positioned at the end of a shaft to support the axial thrust. The pivot may...
2.5K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Noise-induced instability of uniform flow in single-file traffic systems.

PNAS nexus·2026
Same author

Activation entropy of dislocation glide in body-centered cubic metals from atomistic simulations.

Nature communications·2025
Same author

Van der Waals semiconductor InSe plastifies by martensitic transformation.

Science advances·2024
Same author

Observing deformation in situ.

Nature materials·2024
Same author

Anomalous slip in body-centred cubic metals.

Nature·2022
Same author

Time-resolved shear transformations in the transient plastic regime of sheared amorphous silicon.

Physical review. E·2020

Related Experiment Video

Updated: Apr 7, 2026

Real-Time Dynamic Navigation System for the Precise Quad-Zygomatic Implant Placement in a Patient with a Severely Atrophic Maxilla
05:54

Real-Time Dynamic Navigation System for the Precise Quad-Zygomatic Implant Placement in a Patient with a Severely Atrophic Maxilla

Published on: October 18, 2021

2.4K

Dislocation locking versus easy glide in titanium and zirconium.

Emmanuel Clouet1, Daniel Caillard2, Nermine Chaari1

  • 1CEA, DEN, Service de Recherches de Métallurgie Physique, F-91191 Gif-sur-Yvette, France.

Nature Materials
|July 7, 2015
PubMed
Summary
This summary is machine-generated.

Titanium and zirconium deform differently despite similar electron configurations. In situ experiments and calculations reveal distinct dislocation core stabilities cause this plastic behavior contrast.

More Related Videos

Oral Biofilm Formation on Different Materials for Dental Implants
11:19

Oral Biofilm Formation on Different Materials for Dental Implants

Published on: June 24, 2018

12.4K
Treatment with Locking Intramedullary Nailing for Intertrochanteric Fracture of the Femur Utilizing a New Awl with a Distal Positioner
04:41

Treatment with Locking Intramedullary Nailing for Intertrochanteric Fracture of the Femur Utilizing a New Awl with a Distal Positioner

Published on: June 6, 2025

1.5K

Related Experiment Videos

Last Updated: Apr 7, 2026

Real-Time Dynamic Navigation System for the Precise Quad-Zygomatic Implant Placement in a Patient with a Severely Atrophic Maxilla
05:54

Real-Time Dynamic Navigation System for the Precise Quad-Zygomatic Implant Placement in a Patient with a Severely Atrophic Maxilla

Published on: October 18, 2021

2.4K
Oral Biofilm Formation on Different Materials for Dental Implants
11:19

Oral Biofilm Formation on Different Materials for Dental Implants

Published on: June 24, 2018

12.4K
Treatment with Locking Intramedullary Nailing for Intertrochanteric Fracture of the Femur Utilizing a New Awl with a Distal Positioner
04:41

Treatment with Locking Intramedullary Nailing for Intertrochanteric Fracture of the Femur Utilizing a New Awl with a Distal Positioner

Published on: June 6, 2025

1.5K

Area of Science:

  • Materials Science
  • Solid State Physics
  • Physical Metallurgy

Background:

  • Plastic deformation in metals is governed by dislocation core structure.
  • Metals with similar valence electron configurations typically exhibit comparable plastic behavior.
  • Titanium (Ti) and zirconium (Zr), sharing a column in the periodic table, were assumed to deform similarly.

Purpose of the Study:

  • To investigate the contrasting plastic deformation mechanisms of titanium and zirconium.
  • To elucidate the underlying reasons for the observed differences in plastic behavior.
  • To challenge the assumption of similar deformation in Ti and Zr.

Main Methods:

  • In situ transmission electron microscopy (TEM) straining experiments.
  • First-principles calculations.
  • Analysis of dislocation core structures and their stability.

Main Results:

  • Plasticity in Ti was observed to be intermittent, while in Zr it was continuous.
  • Both metals exhibit dislocations with potentially glissile or sessile core structures.
  • An inversion in the stability of these dislocation cores was identified between Ti and Zr.

Conclusions:

  • The stability of dislocation cores is crucial for plastic deformation.
  • An inversion of core stability between Ti and Zr explains their divergent plastic behaviors.
  • This finding necessitates a re-evaluation of deformation mechanisms in similar transition metals.