2010
DOI: 10.1007/s11661-010-0262-y
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Microstructural Evolution and Stress Corrosion Cracking Behavior of Al-5083

Abstract: The fine scale microstructure of Al-5083 (H-131) sensitized at 448 K (175°C) for 1, 10, 25, 50, 100, 240, 500, and 1000 hours has been investigated using transmission electron microscopy (TEM) to study the evolution of the b phase (Al 3 Mg 2 ) at grain boundaries and on pre-existing intragranular particles. In fully sensitized Al-5083, the b phase (Al 3 Mg 2 ) forms heterogeneously both at grain boundaries and on pre-existing particles, which are enriched in manganese. TEM observations showed that the grain bo… Show more

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Cited by 113 publications
(53 citation statements)
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“…In the medium and high Fe alloys, the concentration of Fe increased remarkably and the composition formula was closer to Al 6 (Fe,Mn). In Alloy 4 with high content of Si, the type I particles contained Al, Fe, Mn and Si with a formula close to Al 6 (Fe,Mn) 8 Si.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…In the medium and high Fe alloys, the concentration of Fe increased remarkably and the composition formula was closer to Al 6 (Fe,Mn). In Alloy 4 with high content of Si, the type I particles contained Al, Fe, Mn and Si with a formula close to Al 6 (Fe,Mn) 8 Si.…”
Section: Resultsmentioning
confidence: 99%
“…Extensive research to improve the AA5083 alloy had been conducted with emphasis on the microstructures and mechanical properties [8][9][10][11], superplasticity [12][13][14][15], ultrafine grain [16][17][18][19][20] and adding element [21][22][23][24], etc. Recently, research was carried out on the formation of the Fe-and Mn-rich intermetallics in the AA5083 type Al-Mg-Mn alloy [2].…”
Section: Introductionmentioning
confidence: 99%
“…Kod legura sa više od 3% Mg, usled ograničene rastvorljivosti Mg, dolazi do izdvajanja anodne β-Al 3 Mg 2 faze, koja se preferentno izdvaja po granicama zrna ili na već postojećim česticama Mn-faza [8][9][10]. Zbog toga su ove legure osetljive na interktistalnu, naponsku i piting koroziju, budući da je faza elektrohemijski aktivnija od Al-osnove [11][12][13][14][15]. Ispitivanje korozione otpornosti zavarenih spojeva aluminijumskih legurado 5% Mg, uključujući i noviji postupak trenjem alatom (FSW-friction stir welding) je predmet brojnih istraživanja [10,[16][17][18][19][20], ali nedostaju rezultati korozione otpornosti legura sa većim sadržajem Mg. Zbog toga je cilj ovog rada bio da se ispita koroziona ponašanje zavarenog spoja AlMg6Mn legure.…”
Section: Uvodunclassified
“…Поэтому сплавы системы Al−Mg обладают более высоким сопротивлением кор-розии по сравнению с другими группами алюминиевых сплавов [3][4][5][6]. Механизмы коррозии под напряжением алюминий-магниевых сплавов, рассмотренные в рабо-тах [7][8][9][10][11][12][13], включают: а) механизм межкристаллитного растрескивания в результате селективного растворения вторичной β(Al 3 Mg 2 )-фазы, выделяющейся по границам зерен в сплавах с содержанием магния больше 3% [2] ли-бо вследствие распространения трещин в зоне, обеднен-ной магнием вдоль границ зерен [14,15] или в результате водородного охрупчивания [7,11,13,16,17]; б) механизм транскристаллитного коррозионного растрескивания за счет, как предполагается, выноса ионов магния на поверхность сплава плоскими скоплениями дислока-ций [18]. Последнее обусловлено увлечением примес-ных атомов движущимися дислокациями, т.е.…”
Section: Introductionunclassified