Publication detail

On the relationship between {1 1 2¯ 2} and {1 1 2¯ 6} conjugate twins and double extension twins in rolled pure Mg

OSTAPOVETS, A. BURŠÍK, J. KRAHULA, K. KRÁL, L.

English title

On the relationship between {1 1 2¯ 2} and {1 1 2¯ 6} conjugate twins and double extension twins in rolled pure Mg

Type

Peer-reviewed article not indexed in WoS or Scopus

Language

en

Original abstract

The paper presents a new type of twin-like objects observed in rolled pure magnesium. They have and habit planes and their misorientations to the matrix are close to 56° and 63° about axis, respectively. The ad hoc performed theoretical analysis and atomic simulations allow to interpret the objects as double twins formed by the simultaneous action of two twinning shears with completely re-twinned volume of primary twin. The observed inclinations from the ideal misorientations for such double twins can be explained by the compliance of the strain invariant condition in the twin boundary. It seems plausible that, once the double twin is formed, its twin boundaries are hard to move by glide of twinning disconnections. If so, these twins represent obstacles for the motion of crystal dislocations increasing the hardness of the metal.

Keywords in English

Magnesium, twinning, grain boundaries, plastic deformation, habit plane

Released

2017-02-28

ISSN

1478-6443

Journal

PHILOSOPHICAL MAGAZINE

Volume

97

Number

14

Pages from–to

1188–1101

Pages count

14

BIBTEX


@article{BUT134742,
  author="Andrej {Ostapovec} and Jiří {Buršík} and Karel {Krahula} and Lubomír {Král}",
  title="On the relationship between {1 1 2¯ 2} and {1 1 2¯ 6} conjugate twins and double extension twins in rolled pure Mg",
  journal="PHILOSOPHICAL MAGAZINE",
  year="2017",
  volume="97",
  number="14",
  pages="1188--1101",
  issn="1478-6435"
}