Effect of [delta][prime] precipitates on serrated flow

Journal Article · Wed Mar 01 04:00:00 UTC 1995 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(95)91597-I· OSTI ID:6612025

Kumar, S; Pink, E ^[1]

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1. Oesterreichische Akademie der Wissenschaften, Leoben (Austria). Erich-Schmid-Inst. fuer Festkoerperphysik

This paper examines the role of shearable [delta][prime] precipitates in detail for an Al-2.5Li-2Mg-0.14Zr (Wt.%) alloy and an Al-2Mg alloy. Various characteristics of serrated flow have been investigated in the under-aged condition, which gives fine shearable [delta][prime] precipitates. A comparison of the Al-2.5Li-2Mg-0.14Zr alloy with the Al-2Mg alloy shows that the characteristics of serrated flow are different in two alloys. These differences are attributed to the presence of fine shearable [delta][prime] precipitates in the former alloy. It is concluded that some amount of shearing of [delta][prime] precipitates is required before serrations can appear on the stress-strain curve.

• OSTI ID: 6612025
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 32:5; ISSN 0956-716X; ISSN SCRMEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
360103 -- Metals & Alloys-- Mechanical Properties
ACTIVATION ENERGY
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM BASE ALLOYS
ELECTRON MICROSCOPY
ENERGY
FLOW STRESS
LITHIUM ALLOYS
MAGNESIUM ALLOYS
MECHANICAL PROPERTIES
MICROSCOPY
MICROSTRUCTURE
SAMPLE PREPARATION
STRAINS
STRESSES
TENSILE PROPERTIES
TRANSMISSION ELECTRON MICROSCOPY
ZIRCONIUM ADDITIONS
ZIRCONIUM ALLOYS