Mechanism of serrated flow in binary Al-Li alloys

Journal Article · Sun Sep 15 00:00:00 EDT 1996 · Scripta Materialia

DOI:https://doi.org/10.1016/1359-6462(96)00218-7· OSTI ID:382551

Kumar, S; Pink, E ^[1]; Krol, J ^[2]

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1. Austrian Academy of Sciences, Leoben (Austria). Erich-Schmid-Inst. of Solid State Physics
2. Polish Academy of Sciences, Krakow (Poland). Alexander-Krupkowski-Inst. of Metallurgy and Materials Science

The work on serrated flow in Al-Li alloys has given rise to a controversy--whether serrations in these alloys are caused by lithium atoms in solid solution or by {delta}{prime}(Al{sub 3}Li)-precipitates. This controversy calls for further work to clarify the mechanism of serrated flow in the Al-Li alloys. Kumar and McShane have shown that in an Al-2.5Li-2Mg-0.14Zr alloy, non-shearable {delta}{prime}-precipitates, which are obtained in the under-aged and peak-aged conditions, might directly initiate serrated flow. However, the latter result was ambiguous because of the presence of other alloying elements, and the need to work on a binary Al-Li alloy was emphasized. The present work discusses the results from the binary Al-Li alloys.

• OSTI ID: 382551
• Journal Information: Scripta Materialia, Vol. 35, Issue 6; Other Information: PBD: 15 Sep 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
MICROSTRUCTURE
TENSILE PROPERTIES
LITHIUM ALLOYS
SAMPLE PREPARATION
CASTING
CHEMICAL COMPOSITION
HEAT TREATMENTS
AGING
STRESSES
STRAINS
ULTIMATE STRENGTH
ELONGATION
STRAIN RATE
TRANSMISSION ELECTRON MICROSCOPY
SMALL ANGLE SCATTERING
PRECIPITATION
SOLID SOLUTIONS