On the decomposition behaviour of Al‐Zn(4.5 at.%)‐Mg(2;3 at.%) alloys during continuous cooling from the temperature range of homogeneity | Zendy

Radomsky M. | Zendy; Kabisch O. | Zendy; Löffler H. | Zendy; Sackewitz K.H. | Zendy; Honyek G. | Zendy; Ungár T. | Zendy; Lendvai J. | Zendy; Kovács I. | Zendy

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On the decomposition behaviour of Al‐Zn(4.5 at.%)‐Mg(2;3 at.%) alloys during continuous cooling from the temperature range of homogeneity

Author(s) -

Radomsky M.,

Kabisch O.,

Löffler H.,

Sackewitz K.H.,

Honyek G.,

Ungár T.,

Lendvai J.,

Kovács I.

Publication year - 1979

Publication title -

kristall und technik

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.377

H-Index - 64

eISSN - 1521-4079

pISSN - 0023-4753

DOI - 10.1002/crat.19790140517

Subject(s) - isothermal process , alloy , decomposition , materials science , thermodynamics , homogeneity (statistics) , atmospheric temperature range , electrical resistivity and conductivity , metallurgy , phase (matter) , analytical chemistry (journal) , chemistry , physics , chromatography , organic chemistry , statistics , mathematics , quantum mechanics

The decomposition processes taking place in the Al‐Zn (4.5)‐Mg(2;3) alloys were studied by means of XSAS and resistivity measurements and by TEM investigations after continuous slow cooling to certain temperatures T i and during an isothermal ageing at T i following the continuous cooling procedure. During the cooling between 380 °C and 320 °C mostly particles of the η‐phase are growing. The formation of particles homogeneously distributed in the matrix starts at 165 °C in the alloy with 2 at.% Mg and at 175 °C in the one with 3 at.% Mg. Below these temperatures new subcritical GP zones are formed and particles already present in the matrix are growing. The dominating process depends on T i .

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