Publication detail

Thermal stability of bimodal microstructure in magnesium alloy AZ91 processed by ECAP

PANTĚLEJEV, L. ŠTĚPÁNEK, R. MAN, O.

Original Title

Thermal stability of bimodal microstructure in magnesium alloy AZ91 processed by ECAP

Type

journal article in Web of Science

Language

English

Original Abstract

The changes in microstructure of equal channel angular pressing (ECAP) processed magnesium alloy AZ91 during thermal exposure were studied in this paper. The microstructure stability was investigated by means of electron backscatter diffraction (EBSD), which allowed measuring the changes in grain size, mutual ratio of low-angle boundaries (LABs) to high-angle ones (HABs) and local lattice distortion evaluated by the kernel average misorientation (KAM) parameter. It was found experimentally that the threshold temperature at which significant grain coarsening takes place is 350 centigrade. No modification to mean grain diameter occur below this temperature, nonetheless, some changes in LAB and HAB fraction, as well as in local lattice distortion, can be observed.

Keywords

Microstructural stability, AZ91 magnesium alloy, Equal channel angular pressing (ECAP), Kernel average misorientation (KAM), Electron backscatter diffraction (EBSD)

Authors

PANTĚLEJEV, L.; ŠTĚPÁNEK, R.; MAN, O.

RIV year

2015

Released

9. 7. 2015

Publisher

Elsevier

ISBN

1044-5803

Periodical

MATERIALS CHARACTERIZATION

Year of study

107

Number

9

State

United States of America

Pages from

167

Pages to

173

Pages count

7

BibTex

@article{BUT111291,
  author="Libor {Pantělejev} and Roman {Štěpánek} and Ondřej {Man}",
  title="Thermal stability of bimodal microstructure in magnesium alloy AZ91 processed by ECAP",
  journal="MATERIALS CHARACTERIZATION",
  year="2015",
  volume="107",
  number="9",
  pages="167--173",
  doi="10.1016/j.matchar.2015.07.009",
  issn="1044-5803"
}