Open AccessInfluence of microstructure on the formability of Al-Mg6.8 alloy
Author(s) -
Boris Minov,
M. Popović,
Dragomir Glišić,
Endre Romhanji
Publication year - 2008
Publication title -
hemijska industrija
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.147
H-Index - 19
eISSN - 2217-7426
pISSN - 0367-598X
DOI - 10.2298/hemind0803170m
Subject(s) - formability , materials science , microstructure , alloy , annealing (glass) , metallurgy , strain hardening exponent , composite material , uniaxial tension , work hardening , recrystallization (geology) , dual phase steel , ultimate tensile strength , martensite , paleontology , biology
Formability of Al-Mg6.8 alloy has been evaluated experimentally in uniaxial tension and biaxial stretching. Three different structures developed after cold rolling and annealing in the range of temperature from 265 to 320 °C: (I) recovered dual (a + β) phase, (II) recrystallized (a + β) dual phase, and (III) recrystallized a-Al single phase structure, were tested. Samples with recovered structure have shown a lower formability level than the samples with fully recrystallized structure. Formability level assessed through FLD and LDH value, has been a result of complex interaction between work hardening ability and strain rate sensitivity