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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
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" }