On the influence of plastic deformation on discontinuous precipitation in Mg-Al

Journal Article · Wed Dec 15 04:00:00 EST 1993 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(93)90283-X· OSTI ID:5875166

Duly, D; Audier, M; Brechet, Y ^[1]

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1. Domaine Univ., Saint Martin d'Heres (France). Lab. de Thermodynamique et de Physico-Chimie Metallurgique

The influence of a prestrain on intragranular precipitation is well known: the dislocations created by plastic deformation act as nucleation sites for heterogeneous precipitation. The influence of a similar prestrain on discontinuous precipitation is much less documented. There appears to be no general rule: depending on the systems considered, the kinetics of discontinuous precipitation can either be accelerated or slowed down. Moreover, in certain alloys, discontinuous precipitation is associated with recrystallization phenomena. In this paper, the authors results on the influence of plastic strain at room temperature on discontinuous precipitation in a Mg-8.5 wt% Al alloy. The interesting feature of this alloy is that plastic deformation induces both dislocation glide and twinning.

• OSTI ID: 5875166
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 29:12; ISSN SCRMEX; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360103* -- Metals & Alloys-- Mechanical Properties
ALLOY SYSTEMS
ALLOYS
ALUMINIUM ALLOYS
BINARY ALLOY SYSTEMS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DEFORMATION
DISLOCATIONS
LINE DEFECTS
MAGNESIUM ALLOYS
MAGNESIUM BASE ALLOYS
MECHANICAL PROPERTIES
PLASTICITY
PRECIPITATION
SEPARATION PROCESSES
TWINNING