Mechanics of accelerated strain hardening in harmonic-structure materials

Joséphine Chatellier, Elis Sjögren, Kei Ameyama, Dmytro Orlov

Forskningsoutput: Kapitel i bok/rapport/Conference proceedingKonferenspaper i proceedingPeer review

Sammanfattning

Harmonic-structure (HS) design is one of the most efficient in the family of architected gradient-structure materials recently attracting increasing attention in global material science community due to leading structural performance characteristics. This work studies in situ the mechanics of plastic deformation in HS materials on the example of commercially pure nickel (Ni) during uniaxial tensile loading. It reveals that strain partitioning between ultrafine and coarse grain fractions in HS Ni commences already at early stages of plastic deformation. Slow accumulation of strain in the ultrafine-grain regions leads to the slow consumption of ductility resource, while accelerated accumulation of strain in the coarse-grain regions leads to an accelerated strain hardening. These effects combined with evolving variations of strain tensor components have synergetic effect leading to the unique plastic behaviour and excellent structural performance of HS materials.
Originalspråkengelska
Titel på värdpublikation42nd Risø International Symposium on Materials Science: Microstructural variability: Processing, analysis, mechanisms and properties
Undertitel på värdpublikation5–9 September 2022, Department of Civil and Mechanical Engineering, Technical University of Denmark, Denmark
FörlagIOP Publishing
Antal sidor8
DOI
StatusPublished - 2022
Evenemang42nd Risø International Symposium on Materials Science: Microstructural variability: Processing, analysis, mechanisms and properties - Risø, Danmark
Varaktighet: 2022 sep. 52022 sep. 9

Publikationsserier

NamnIOP Conference Series: Materials Science and Engineering
FörlagIOP Publishing
Volym1249
ISSN (elektroniskt)1757-899X

Konferens

Konferens42nd Risø International Symposium on Materials Science
Land/TerritoriumDanmark
OrtRisø
Period2022/09/052022/09/09

Ämnesklassifikation (UKÄ)

  • Metallurgi och metalliska material

Fingeravtryck

Utforska forskningsämnen för ”Mechanics of accelerated strain hardening in harmonic-structure materials”. Tillsammans bildar de ett unikt fingeravtryck.

Citera det här