The electronic contribution to metastability in age-hardening Al-Li alloys

A soft x-ray emission study

A. Kerr, L. M. Watson, A. Szász

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A commercial 2091 aluminium-lithium alloy was subjected to various aging treatments to produce different metastable precipitates. The nature of the precipitates was deduced from differential thermal analysis and by reference to the literature. The Al L2,3 and the Li K beta spectra were recorded. The average energy of the Al L2,3 emission band from the matrix was taken to be a measure of the overall energy of the valence electrons, and a direct correlation was established between the valence electron energy and the hardness of the alloy. The Li K beta spectra from lithium concentrated in the precipitates showed considerable structure not present in the spectrum from the pure metal, and which is related to covalency in the Al-Li bonds.

Original languageEnglish
Article number025
Pages (from-to)5405-5416
Number of pages12
JournalJournal of Physics Condensed Matter
Volume7
Issue number27
DOIs
Publication statusPublished - 1995

Fingerprint

precipitation hardening
Age hardening
metastable state
Precipitates
precipitates
X rays
aluminum-lithium alloys
electronics
Lithium alloys
valence
x rays
Electrons
Lithium
Differential thermal analysis
Aluminum alloys
thermal analysis
hardness
lithium
Aging of materials
Metals

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

The electronic contribution to metastability in age-hardening Al-Li alloys : A soft x-ray emission study. / Kerr, A.; Watson, L. M.; Szász, A.

In: Journal of Physics Condensed Matter, Vol. 7, No. 27, 025, 1995, p. 5405-5416.

Research output: Contribution to journalArticle

@article{5b8c4c7a3ae742b388176450785c7ab4,
title = "The electronic contribution to metastability in age-hardening Al-Li alloys: A soft x-ray emission study",
abstract = "A commercial 2091 aluminium-lithium alloy was subjected to various aging treatments to produce different metastable precipitates. The nature of the precipitates was deduced from differential thermal analysis and by reference to the literature. The Al L2,3 and the Li K beta spectra were recorded. The average energy of the Al L2,3 emission band from the matrix was taken to be a measure of the overall energy of the valence electrons, and a direct correlation was established between the valence electron energy and the hardness of the alloy. The Li K beta spectra from lithium concentrated in the precipitates showed considerable structure not present in the spectrum from the pure metal, and which is related to covalency in the Al-Li bonds.",
author = "A. Kerr and Watson, {L. M.} and A. Sz{\'a}sz",
year = "1995",
doi = "10.1088/0953-8984/7/27/025",
language = "English",
volume = "7",
pages = "5405--5416",
journal = "Journal of Physics Condensed Matter",
issn = "0953-8984",
publisher = "IOP Publishing Ltd.",
number = "27",

}

TY - JOUR

T1 - The electronic contribution to metastability in age-hardening Al-Li alloys

T2 - A soft x-ray emission study

AU - Kerr, A.

AU - Watson, L. M.

AU - Szász, A.

PY - 1995

Y1 - 1995

N2 - A commercial 2091 aluminium-lithium alloy was subjected to various aging treatments to produce different metastable precipitates. The nature of the precipitates was deduced from differential thermal analysis and by reference to the literature. The Al L2,3 and the Li K beta spectra were recorded. The average energy of the Al L2,3 emission band from the matrix was taken to be a measure of the overall energy of the valence electrons, and a direct correlation was established between the valence electron energy and the hardness of the alloy. The Li K beta spectra from lithium concentrated in the precipitates showed considerable structure not present in the spectrum from the pure metal, and which is related to covalency in the Al-Li bonds.

AB - A commercial 2091 aluminium-lithium alloy was subjected to various aging treatments to produce different metastable precipitates. The nature of the precipitates was deduced from differential thermal analysis and by reference to the literature. The Al L2,3 and the Li K beta spectra were recorded. The average energy of the Al L2,3 emission band from the matrix was taken to be a measure of the overall energy of the valence electrons, and a direct correlation was established between the valence electron energy and the hardness of the alloy. The Li K beta spectra from lithium concentrated in the precipitates showed considerable structure not present in the spectrum from the pure metal, and which is related to covalency in the Al-Li bonds.

UR - http://www.scopus.com/inward/record.url?scp=0039670916&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0039670916&partnerID=8YFLogxK

U2 - 10.1088/0953-8984/7/27/025

DO - 10.1088/0953-8984/7/27/025

M3 - Article

VL - 7

SP - 5405

EP - 5416

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

SN - 0953-8984

IS - 27

M1 - 025

ER -