Publication detail
Influence of microstructure on tensile properties of magnesium alloy AZ91
ŠTĚPÁNEK, R. PANTĚLEJEV, L. MAN, O.
Czech title
Vliv mikrostruktury na tahové vlastnosti hořčíkové slitiny AZ91
English title
Influence of microstructure on tensile properties of magnesium alloy AZ91
Type
conference paper
Language
en
Original abstract
This paper deals with influence of microstructure of magnesium alloy AZ91 on its mechanical properties. Tensile characteristics and microstructures of cast and extruded alloy, and both of these alloys after equal channel angular pressing (ECAP), were compared. It was found that tensile properties are not determined only by grain size but another aspect plays an important role because the highest values of σ0.2 proof stress and tensile strength were achieved for extruded alloy despite its higher average grain size compared to both ECAPed alloys. Compared to this, microhardness seems to be related only to grain size.
Czech abstract
Tento článek se zabývá vlivem mikrostruktury hořčíkové slitiny AZ91 na její mechanické vlastnosti. Byly porovnávány mikrostruktury a vlastnosti této slitiny ve čtyřech různých stavech: litém, extrudovaném a oba tyto stavy po následném ECAPu (equal channel angular pressing). Bylo zjištěno, že nejvyšší hodnoty smluvní meze kluzu σ0,2 je dosaženo u slitiny v extrudovaném stavu, přestože její veliost zrna byla vyšší než u obou ECAPovaných slitin, tudíž tahové vlastnosti nejsou dány pouze velikostí zrna ale velkou roli hrají i další aspekty. Oproti tomu byla mikrotvrdost závislá pouze na velikosti zrna.
English abstract
This paper deals with influence of microstructure of magnesium alloy AZ91 on its mechanical properties. Tensile characteristics and microstructures of cast and extruded alloy, and both of these alloys after equal channel angular pressing (ECAP), were compared. It was found that tensile properties are not determined only by grain size but another aspect plays an important role because the highest values of σ0.2 proof stress and tensile strength were achieved for extruded alloy despite its higher average grain size compared to both ECAPed alloys. Compared to this, microhardness seems to be related only to grain size.
Keywords in Czech
AZ91, mikrostruktura, ECAP, tahové vlastnosti
Keywords in English
AZ91, microstructure, ECAP, tensile properties
RIV year
2015
Released
03.06.2015
ISBN
978-80-87294-62-8
Book
METAL 2015: 24TH INTERNATIONAL CONFERENCE ON METALLURGY AND MATERIALS
Pages from–to
1252–1257
Pages count
6
BIBTEX
@inproceedings{BUT115116,
author="Roman {Štěpánek} and Libor {Pantělejev} and Ondřej {Man},
title="Influence of microstructure on tensile properties of magnesium alloy AZ91",
booktitle="METAL 2015: 24TH INTERNATIONAL CONFERENCE ON METALLURGY AND MATERIALS",
year="2015",
month="June",
pages="1252--1257",
isbn="978-80-87294-62-8"
}