Transmission electron microscopy observations on Cu-Mg alloy systems

Ken Ichi Nishikawa, Satoshi Semboshi, Toyohiko J. Konno

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Environmentally friendly Cu-based alloys with high strength and low electrical resistivity have been much sought in order to replace deleterious Cu-Be alloys for electrical applications. As one of the candidate systems, we have examined age-hardening behaviors of Cu-Mg alloys by using transmission electron microscopy (TEM). Cu-2.26wt.%Mg alloys were solution-treated and annealed at 723K, and their structural changes have been investigated. The Vickers hardness measurements showed that they aged-harden gradually. Our TEM observations showed that annealing for 6h brings about precipitation of numerous needle-like particles of 10 nm in length. The diffraction studies indicated these precipitates consist of the Cu2Mg phase with {111}Cu habit planes. When annealed for 96h, these precipitates become semi-coherent, which was manifested by moiré fringes; while maintaining the orientation relationship of (111)Cu//(111)Cu2Mg, [110]Cu//[110]Cu2Mg.

Original languageEnglish
Title of host publicationDesigning of Interfacial Structures in Advanced Materials and their Joints
EditorsMasaaki Naka
PublisherTrans Tech Publications Ltd
Pages103-108
Number of pages6
ISBN (Print)9783908451334
DOIs
Publication statusPublished - 2007 Jan 1
Externally publishedYes
EventInternational Workshop on Designing of Interfacial Structures in Advanced Materials and their Joints, DIS 2006 - Osaka, Japan
Duration: 2006 May 182006 May 20

Publication series

NameSolid State Phenomena
Volume127
ISSN (Print)1012-0394
ISSN (Electronic)1662-9779

Other

OtherInternational Workshop on Designing of Interfacial Structures in Advanced Materials and their Joints, DIS 2006
CountryJapan
CityOsaka
Period06/5/1806/5/20

Keywords

  • Age-hardening
  • Cu-Mg alloy
  • Laves phase
  • Precipitation

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Transmission electron microscopy observations on Cu-Mg alloy systems'. Together they form a unique fingerprint.

Cite this