Publication detail

Microstructure and mechanical properties of ultrafine-grained magnesium AZ91 alloy

FINTOVÁ, S. PANTĚLEJEV, L. KUNZ, L.

Original Title

Microstructure and mechanical properties of ultrafine-grained magnesium AZ91 alloy

Type

conference paper

Language

English

Original Abstract

Microstructure, mechanical properties, cyclic plastic deformation behavior and fatigue strength of ultrafine-grained (UFG) magnesium alloy AZ91 processed by equal channel angular pressing (ECAP) were investigated. ECAP of originally cast alloy results in development of bimodal structure, improved yield stress, tensile strength and ductility when compared to the as-cast state. Endurance limit based on 107 cycles is also improved, however exhibits large scatter. Initiation of fatigue cracks takes place in regions of large grains in the bimodal structure, where the content of Mg17Al12 particles is low.

Keywords

AZ91, ECAP, microstructure, mechanical properties, cyclic plastic deformation, fatigue crack initiation

Authors

FINTOVÁ, S.; PANTĚLEJEV, L.; KUNZ, L.

RIV year

2014

Released

9. 4. 2014

Publisher

Thomas Wohlbier, TTP USA

Location

Switzerland

ISBN

9783038350729

Book

Metallography XV

ISBN

0255-5476

Periodical

Materials Science Forum

Year of study

782

Number

1

State

Swiss Confederation

Pages from

384

Pages to

389

Pages count

6

BibTex

@inproceedings{BUT106214,
  author="Stanislava {Fintová} and Libor {Pantělejev} and Ludvík {Kunz}",
  title="Microstructure and mechanical properties of ultrafine-grained magnesium AZ91 alloy",
  booktitle="Metallography XV",
  year="2014",
  journal="Materials Science Forum",
  volume="782",
  number="1",
  pages="384--389",
  publisher="Thomas Wohlbier, TTP USA",
  address="Switzerland",
  doi="10.4028/www.scientific.net/MSF.782.384",
  isbn="9783038350729",
  issn="0255-5476"
}