Age-hardening in a commercial Mg-based alloy

C. E. Macchi, A. Somoza, J. F. Nie

Research output: Contribution to journalConference articleOther

2 Citations (Scopus)

Abstract

Age-hardening phenomena induced by thermal and thermo-mechanical treatments in the commercial Mg-based alloy WE54 were studied by positron annihilation lifetime spectroscopy and Vickers microhardness. To this aim, samples were plastically deformed and subsequently aged at 250 °C for times ranging from 0 to 1000 hours. The results obtained are discussed in terms of the role of vacancies in the solute transport and therefore they contribute to the discussion on the vacancy-solute clusters (and/or intermediate precipitates) interactions during the precipitation sequence of the WE54. Besides, we show that cold work previous aging not only accelerates but increases the hardening response of the alloy.

Original languageEnglish
Pages (from-to)3538-3541
Number of pages4
JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
Volume4
Issue number10
DOIs
Publication statusPublished - 1 Dec 2007
Event14th International Conference on Positron Annihilation, ICPA 14 - Hamilton, ON, Canada
Duration: 23 Jul 200628 Jul 2006

Cite this

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Age-hardening in a commercial Mg-based alloy. / Macchi, C. E.; Somoza, A.; Nie, J. F.

In: Physica Status Solidi (C) Current Topics in Solid State Physics, Vol. 4, No. 10, 01.12.2007, p. 3538-3541.

Research output: Contribution to journalConference articleOther

TY - JOUR

T1 - Age-hardening in a commercial Mg-based alloy

AU - Macchi, C. E.

AU - Somoza, A.

AU - Nie, J. F.

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AB - Age-hardening phenomena induced by thermal and thermo-mechanical treatments in the commercial Mg-based alloy WE54 were studied by positron annihilation lifetime spectroscopy and Vickers microhardness. To this aim, samples were plastically deformed and subsequently aged at 250 °C for times ranging from 0 to 1000 hours. The results obtained are discussed in terms of the role of vacancies in the solute transport and therefore they contribute to the discussion on the vacancy-solute clusters (and/or intermediate precipitates) interactions during the precipitation sequence of the WE54. Besides, we show that cold work previous aging not only accelerates but increases the hardening response of the alloy.

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