Fatigue behaviour of AZ91 magnesium alloy in as-cast and severe plastic deformed conditions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F14%3A00434750" target="_blank" >RIV/68081723:_____/14:00434750 - isvavai.cz</a>

Alternative codes found

RIV/00216305:26620/14:PU111321

Result on the web

<a href="http://dx.doi.org/10.4028/www.scientific.net/AMR.891-892.397" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/AMR.891-892.397</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/AMR.891-892.397" target="_blank" >10.4028/www.scientific.net/AMR.891-892.397</a>

Result language

angličtina

Original language name

Fatigue behaviour of AZ91 magnesium alloy in as-cast and severe plastic deformed conditions

Original language description

Fatigue strength, crack initiation and microstructure were experimentally investigated in an as-cast AZ91 alloy and in ultrafine-grained (UFG) AZ91 alloy processed by equal channel angular pressing (ECAP). The microstructure after ECAP is bimodal, consisting of fine-grained regions and clusters of larger grains with lower density of intermetallic particles. It has been found that the ECAP substantially increases the tensile strength (factor of two), improves ductility (factor of five) and improves the fatigue strength in low-cycle fatigue region. The improvement of the endurance limit based on 107 cycles is weak. The cyclic slip bands, as sites of the fatigue crack initiation on material surface, were investigated. Focussed ion beam technique (FIB) wasapplied to reveal the surface relief and the microstructure in the vicinity of early fatigue cracks. No grain coarsening was observed in the close vicinity of the initiated cracks. Fatigue cracks in ultrafine-grained structure develop bo

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

JL - Fatigue and fracture mechanics

OECD FORD branch

—

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

11th International Fatigue Congress

ISBN

978-3-03835-008-8

ISSN

1022-6680

e-ISSN

—

Number of pages

6

Pages from-to

397-402

Publisher name

Trans Tech Publications

Place of publication

Zurich

Event location

Melbourne

Event date

Mar 2, 2014

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000337767700061