Publication detail

Changes in mechanical properties of as-cast magnesium alloy AZ91 after equal channel angular pressing

ŠTĚPÁNEK, R. PANTĚLEJEV, L.

Czech title

Změny mechanických vlastností lité hořčíkové slitiny AZ91 v průběhu ECAP

English title

Changes in mechanical properties of as-cast magnesium alloy AZ91 after equal channel angular pressing

Type

journal article - other

Language

en

Original abstract

This paper deals with differences in mechanical characteristics of AZ91 magnesium alloy in the as-cast state and after the subsequent equal channel angular pressing (ECAP) and with measurement of local microhardness. According to the obtained results, the tensile properties increased by a factor of two due to the ECAP procedure. The proof stress, σ0.2, increased to 160 MPa and the ultimate tensile strength, σUTS, to 321 MPa. The local microhardness of ECAPed alloy varied between 70 and 91 HV 0.025 due to microstructural bimodality.

Czech abstract

Tento článek se zabývá rozdíly v mechanických vlastnostech a měřením lokální mikrotvrdosti hožřčíkové slitiny AZ91 v litém stavu a po následném zpracování pomocí metody ECAP (equal channel angular pressing). Podle získaných výsledků dochází v průběhu ECAP k téměř dvojnásobnému zlepšní mechanických vlastností. Smluvní mez kluzu σ0,2 vzrostla na 160 MPa a pevnost v tahu na 321 MPa. Lokální mikrotvrdost slitiny po ECAPu kolísala v důsledku mirkostrukturní bimodality v rozmezí 70-91 HV 0,025.

English abstract

This paper deals with differences in mechanical characteristics of AZ91 magnesium alloy in the as-cast state and after the subsequent equal channel angular pressing (ECAP) and with measurement of local microhardness. According to the obtained results, the tensile properties increased by a factor of two due to the ECAP procedure. The proof stress, σ0.2, increased to 160 MPa and the ultimate tensile strength, σUTS, to 321 MPa. The local microhardness of ECAPed alloy varied between 70 and 91 HV 0.025 due to microstructural bimodality.

Keywords in English

AZ91; ECAP; Mechanical properties

RIV year

2015

Released

20.12.2015

Publisher

University of Žilina

Location

Žilina

ISSN

1338-6174

Volume

22

Number

4

Pages from–to

160–165

Pages count

6

BIBTEX


@article{BUT119714,
  author="Roman {Štěpánek} and Libor {Pantělejev},
  title="Changes in mechanical properties of as-cast magnesium alloy AZ91 after equal channel angular pressing",
  year="2015",
  volume="22",
  number="4",
  month="December",
  pages="160--165",
  publisher="University of Žilina",
  address="Žilina",
  issn="1338-6174"
}