Publication detail

Influence of microstructure on mechanical properties of magnesium alloy AZ91

PANTĚLEJEV, L. ŠTĚPÁNEK, R.

Original Title

Influence of microstructure on mechanical properties of magnesium alloy AZ91

English Title

Influence of microstructure on mechanical properties of magnesium alloy AZ91

Type

multimedia

Language

en

Original Abstract

This paper deals with differences of mechanical characteristics and fracture surface morphology of magnesium alloy AZ91 in extruded state and after subsequent equal channel angular pressing (ECAP). According to results, the tensile properties are not determined by grain size only as values of the tensile strength and 0.2 proof stress were similar for both alloys despite having average grain size 15.9 μm for the extruded alloy and 1.2 μm for the ECAPed alloy. In contrast, microhardness seems to be dependant solely on the grain size. Fractographic analysis has shown changes in the damage mode from quasi-cleavage fracture in extruded state to rather ductile fracture with dimple morphology in exECAP state during tensile loading.

English abstract

This paper deals with differences of mechanical characteristics and fracture surface morphology of magnesium alloy AZ91 in extruded state and after subsequent equal channel angular pressing (ECAP). According to results, the tensile properties are not determined by grain size only as values of the tensile strength and 0.2 proof stress were similar for both alloys despite having average grain size 15.9 μm for the extruded alloy and 1.2 μm for the ECAPed alloy. In contrast, microhardness seems to be dependant solely on the grain size. Fractographic analysis has shown changes in the damage mode from quasi-cleavage fracture in extruded state to rather ductile fracture with dimple morphology in exECAP state during tensile loading.

Keywords

AZ91; microstructure; ECAP; mechanical properties; fracture behaviour

Released

19.11.2015

Publisher

Žilinská universita, Slovenská republika

Location

Žilina, Slovenská republika

Pages from

-

Pages to

-

Pages count

4

Documents

BibTex


@misc{BUT119942,
  author="Libor {Pantělejev} and Roman {Štěpánek}",
  title="Influence of microstructure on mechanical properties of magnesium alloy AZ91
",
  annote="This paper deals with differences of mechanical characteristics and fracture surface morphology of magnesium alloy AZ91 in extruded state and after subsequent equal channel angular pressing (ECAP). According to results, the tensile properties are not determined by grain size only as values of the tensile strength and 0.2 proof stress were similar for both alloys despite having average grain size 15.9 μm for the extruded alloy and 1.2 μm for the ECAPed alloy. In contrast, microhardness seems to be dependant solely on the grain size. Fractographic analysis has shown changes in the damage mode from quasi-cleavage fracture in extruded state to rather ductile fracture with dimple morphology in exECAP state during tensile loading.",
  address="Žilinská universita, Slovenská republika",
  booktitle="Konštrukčné materiály 2015",
  chapter="119942",
  howpublished="electronic, physical medium",
  institution="Žilinská universita, Slovenská republika",
  year="2015",
  month="november",
  pages="----",
  publisher="Žilinská universita, Slovenská republika",
  type="multimedia"
}