Damping capacity of pre-compressed magnesium alloys after annealing

Yujie Cui, Jiaxiang Li, Yunping Li, Yuichiro Koizumi, Akihiko Chiba

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

We systematically studied the effect of annealing on damping capacity of pre-deformed magnesium alloy and demonstrated the close relationship between damping capacity and twin boundary mobility. The damping capacity of pre-compressed AZ31 alloy can be improved by annealing for short period as a result of increased twin boundary mobility. In contrast, the damping capacity will be deteriorated after prolonged annealing in pre-compressed AZ91 alloy, which is ascribed to the stabilization of twin boundary by significant segregation and precipitation. In addition, we firstly succeeded to distinguish the damping capacity contributed by TB motion from that by dislocation motion in Mg alloys. This study provides the strategy to enhance damping capacity by improving twin boundary mobility after appropriate annealing, the time of which depends on the alloying element concentration.

Original languageEnglish
Pages (from-to)104-109
Number of pages6
JournalMaterials Science and Engineering A
Volume708
DOIs
Publication statusPublished - 2017 Dec 21

Keywords

  • Annealing
  • Damping capacity
  • Magnesium alloy
  • Twin boundary

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint

Dive into the research topics of 'Damping capacity of pre-compressed magnesium alloys after annealing'. Together they form a unique fingerprint.

Cite this