Solidification and Thermo-mechanical Processing of Aluminum Ingots5 PDF Download
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Author: M. C. Flemings
Publisher:
ISBN:
Category :
Languages : en
Pages : 128
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Work is reported on five separate but related research activities on solidification and thermomechanical processing of aluminum ingots. Several of these are completed research activities; others are in progress. They deal with (1) solution treatment of cast Al-4.5% Cu alloy, (2) effect of solution treatment of mechanical properties and fracture behavior of Al-4.5% Cu alloy, (3) effect of thermo-mechanical processing on solution treatment of wrought Al-4.5% Cu alloy, (4) heat flow in unidirectional solidification, and (5) laboratory simulation of the 'negative cone of segregation'. (Author).
Author: M. C. Flemings
Publisher:
ISBN:
Category :
Languages : en
Pages : 128
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Book Description
Work is reported on five separate but related research activities on solidification and thermomechanical processing of aluminum ingots. Several of these are completed research activities; others are in progress. They deal with (1) solution treatment of cast Al-4.5% Cu alloy, (2) effect of solution treatment of mechanical properties and fracture behavior of Al-4.5% Cu alloy, (3) effect of thermo-mechanical processing on solution treatment of wrought Al-4.5% Cu alloy, (4) heat flow in unidirectional solidification, and (5) laboratory simulation of the 'negative cone of segregation'. (Author).
Author: Robert Duane Brown
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ISBN:
Category : Aluminum alloys
Languages : en
Pages : 20
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Author:
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Category : Science
Languages : en
Pages : 710
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Author:
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Category : Science
Languages : en
Pages : 1416
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Category : Government publications
Languages : en
Pages : 752
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Author:
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ISBN:
Category :
Languages : en
Pages : 37
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The Materials Engineering Division at Frankford Arsenal is involved in an extensive research effort aimed at upgrading the engineering properties of wrought high strength 7000 series aluminum alloys through thermomechanical processing of the ingot material. The development of two new ingot thermomechanical processing techniques, ISML-ITMT and FA-ITMT, is presented. The effects of these techniques on the recrystallization behavior, grain morphology, tensile properties, fracture toughness and stress corrosion resistance of high purity 7075 alloy sheet and plate is presented. The recrystallization of 7075 alloy into a fine grained material was found to be controlled by the distribution of the major alloying elements, Zn, Mg and Cu, as well as by that of the ancillary element, Cr. The results showed that for a given standard temper, i.e., T6, T76 and T73, high purity ITMT processed 7075 alloy has finer grain size, equivalent strength and better ductility, fracture toughness and stress corrosion characteristics than commercial 7075 alloy. The work also showed that high purity ITMT processed 7075 alloy in the FTMT temper (a temper involving a deformation stage between an initial and a final artificial aging stage) has higher strength, ductility and fracture toughness than commercial 7075-T6 alloy. (Author).
Author: James G. Morris
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 248
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Author:
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Category : Technology
Languages : en
Pages : 1228
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Author:
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Category :
Languages : en
Pages :
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Abstract : Critical exploration of the minimalistic high strength low alloy aluminum (HSLA-Al) paradigm is necessary for the continued development of advanced aluminum alloys. In this study, scandium (Sc) and zirconium (Zr) are examined as the main precipitation strengthening additions, while magnesium (Mg) is added to probe the synergistic effects of solution and precipitation hardening, as well as the grain refinement during solidification afforded by a moderate growth restriction factor. Further, pathways of recrystallization are explored in several potential HSLA-Al systems sans Sc. Aluminum-titanium-boron (Al-Ti-B) and aluminum-titanium-carbon (Al-Ti-C) grain refining master alloys are added to a series of Al-Zr alloys to examine both the reported Zr poisoning effect on grain size reduction and the impact on recrystallization resistance through the use of electron backscattered diffraction (EBSD) imaging. Results include an analysis of active strengthening mechanisms and advisement for both constitution and thermomechanical processing of HSLA-Al alloys for wrought or near-net shape cast components. The mechanisms of recrystallization are discussed for alloys which contain a bimodal distribution of particles, some of which act as nucleation sites for grain formation during annealing and others which restrict the growth of the newly formed grains.
Author:
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Category : Government publications
Languages : en
Pages : 1344
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