DSC sample preparation for Al-based alloys

Journal Article · Sat Jun 01 04:00:00 EDT 1996 · Scripta Materialia

DOI:https://doi.org/10.1016/1359-6462(96)00036-X· OSTI ID:250697

Starink, M J; Hobson, A J; Gregson, P J ^[1]

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1. Univ. of Southampton (United Kingdom). Dept. of Engineering Materials

Differential Scanning Calorimetry (DSC) is a useful technique for the study of phase transformations and has been widely applied to study precipitation in aluminium alloys. In the present work the effect of sample preparation during DSC heating of a monolithic 8090 (Al-Cu-Mg-Li-Zr) alloy and an 8090 MMC is investigated. The 8090 alloy system seems especially suited for such a study since the main precipitation reactions which occur in this alloy (GPB-zone, {delta}{prime}(Al{sub 3}Li) and S{prime}(Al{sub 2}CuMg) formation) cover a wide range of different types of precipitation reactions. DSC experiments were performed with a Shimadzu DSC-50 employing a nitrogen gas flow using a heating rate of 10 C/min. DSC curves were corrected for the baseline of the DSC and for heat capacity of the alloys following a procedure outlined elsewhere. Hence, the presented DSC curves represent heat flows due to reactions only.

• OSTI ID: 250697
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 11 Vol. 34; ISSN 1359-6462; ISSN XZ503X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM BASE ALLOYS
CHEMICAL COMPOSITION
COMPOSITE MATERIALS
COPPER ALLOYS
DISSOLUTION
HEAT FLUX
HEAT TREATMENTS
HEATING RATE
INTERMETALLIC COMPOUNDS
LITHIUM ALLOYS
MAGNESIUM ADDITIONS
NUCLEATION
PHASE STUDIES
PRECIPITATION
QUENCHING
SILICON CARBIDES
VACANCIES
ZIRCONIUM ADDITIONS