EFFECTS OF THE 3RD ELEMENT ON CREEP-BEHAVIOR OF AL-MG AND ALPHA-FE-BESOLID-SOLUTION ALLOYS

Citation
H. Sato et al., EFFECTS OF THE 3RD ELEMENT ON CREEP-BEHAVIOR OF AL-MG AND ALPHA-FE-BESOLID-SOLUTION ALLOYS, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 234, 1997, pp. 1067-1070
Citations number
8
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Material Science
ISSN journal
0921-5093
Volume
234
Year of publication
1997
Pages
1067 - 1070
Database
ISI
SICI code
0921-5093(1997)234:<1067:EOT3EO>2.0.ZU;2-N
Abstract
In creep of alpha-iron, IS effects (interstitial-substitutional intera ction) were reported. Similar effects are expected in ternary substitu tional solid solutions. In the present report, effects of the second s ubstitute (the third element), whose size misfit is small, on creep be havior and the transition stress from Alloy-type to Metal-type have be en investigated experimentally. Three alloy systems are employed, i.e. aluminum-magnesium-zinc, aluminum-magnesium-lithium and alpha iron-be ryllium-manganese solid solutions. Although no change in equivalent ma gnesium concentration by the addition of zinc nor lithium is expected, creep rates and the transition stress in Al-Mg alloys are affected by these third elements. Similar changes are observed in alpha iron-bery llium-manganese system. Substitutional elements are not always indepen dent with each other, so that the apparent interaction between the fir st substitute, i.e. magnesium or beryllium, and a dislocation can be a ffected by the third elements. (C) 1997 Elsevier Science S.A.