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Type Fuller, Christian B.; Krause, Albert R.; Dunand, David C.; Seidman, David N.
  Publication Microstructure and Mechanical Properties of a 5754 Aluminum Alloy Modified by Sc and Zr Additions Volume Journal Article
Pages 2002
  Abstract Materials Science and Engineering A  
  Corporate Author Mater. Sci. Eng. A  
Publisher 338  
Editor 1-2
  Summary Language 8-16 Series Editor Al-Sc-Zr alloys; Fatigue (materials); Mechanical properties; Aluminum alloys; Microstructural properties  
Abbreviated Series Title The effects of various heat treatments upon the microstructure and mechanical properties of a rolled 5754 aluminum alloy modified with 0.23 wt.% Sc and 0.22 wt.% Zr were investigated. Grain size, as well as precipitate size, type, and morphology were observed by optical and transmission electron microscopies. Two populations of the Al3Sc1-xZrx phase were present: (i) large incoherent precipitates formed during solidification and hot-rolling; and (ii) fine coherent precipitates formed from secondary precipitation, which improved alloy strength, as shown by hardness, tensile, and fatigue measurements. Aging, however, also produced two types of grain-boundary precipitates, Al6Mn and -Al3Mg2, which contributed to poorer fatigue behavior and reduced ductility.
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no NU @ karnesky @ 526
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