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  • 1
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    Unknown
    Star trek materials today? (1997)
    Springer
    Details
    Publication Date: 1997-06-01
    Print ISSN: 1047-4838
    Electronic ISSN: 1543-1851
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Springer
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    PAPER CURRENT
  • 2
    Electronic Resource
    Electronic Resource
    Distribution of Twins around a Microhardness Indenter in Close-packed Hexagonal Metals (1964)
    [s.l.] : Nature Publishing Group
    Nature 203 (1964), S. 634-635 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Following a metallographic examination of the deformation produced in indented zinc and magnesium crystals, it was suggested that slip alone could readily account for the hardness anisotropy found in prism planes and indirectly for the anisotropy in the basal planes5. However, it was noted that ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/203634a0
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  • 3
    Electronic Resource
    Electronic Resource
    Diffusion bonding and testing of Al-alloy lap shear test pieces (1985)
    Springer
    Journal of materials science 20 (1985), S. 1009-1014 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A quantitative measure of the effect of processing variables on the shear strength of solid state diffusion bonds is often difficult to obtain because of the scatter in test data. This may be reduced by improving the bonding and testing techniques. Two jigs for bonding and testing small Al-alloy lap shear test pieces are described. These jigs enabled the precise measurement of shear stress-strain curves for lap joints and led to reproducible shear strength values. Results obtained for diffusion bonded lap joints between clad Al-Zn-Mg (7010) alloy are described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00585745
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  • 4
    Electronic Resource
    Electronic Resource
    Superplastic deformation of strongly textured Ti-6Al-4V (1985)
    Springer
    Journal of materials science 20 (1985), S. 1976-1984 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Changes in microstructure and texture during superplastic deformation of strongly textured Ti-6Al-4V bar have been determined in order to establish the cause of stress and strain anisotropy. The effect of strain on the microstructure of the alloy was to cause a progressive break-up, due to grain-boundary sliding, of an initially directional microstructure containing contiguousα-phase. The texture of theα-phase, however, changed very little with superplastic strain but that of theβ-phase was randomized. Shape changes predicted by permitted deformation modes in theα-phase did not correlate with the observed shape changes, whereas the observed anisotropy could be explained by the break-up of the contiguousα-phase. A model to account for this anisotropy is described briefly, together with a typical microstructure which should exhibit isotropic superplastic deformation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01112279
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  • 5
    Electronic Resource
    Electronic Resource
    Effect of superplastic deformation on the grain size and tensile properties of Al-6.2Zn-2.5Mg-1.7Cu (7010) alloy sheet (1985)
    Springer
    Journal of materials science 20 (1985), S. 2408-2416 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract An Al-Zn-Mg alloy (7010) was cold-rolled and annealed to produce a small recrystallized grain size, and superplastically deformed in the temperature range 475 to 520° C at strain rates $$\dot \varepsilon = {\text{1}}{\text{.1 x 10}}^{{\text{ - 5}}} $$ to 2.8×10−3 sec−1. At 500° C and $$\dot \varepsilon = {\text{2}}{\text{.8 x 10}}^{{\text{ - 5}}} $$ sec−1 superplastic elongations up to 350% were obtained, but above about 60% elongation the residual room-temperature tensile properties after heat treatment decreased due to increasing grain-boundary cavitation. Grain growth rates were increased by superplastic strain.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00556070
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  • 6
    Electronic Resource
    Electronic Resource
    Superplastic deformation of sheet test pieces machined from Ti-6Al-4V bar (1986)
    Springer
    Journal of materials science 21 (1986), S. 4071-4080 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Sheet tensile test pieces were machined in three orientations from edge textured Ti-6Al-4V bar and tested at temperatures in the range 800 to 975
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02431654
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  • 7
    Electronic Resource
    Electronic Resource
    Superplastic deformation of sheet test pieces machined from Ti-6Al-4V bar (1986)
    Springer
    Journal of materials science 21 (1986), S. 4071-4080 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Sheet tensile test pieces were machined in three orientations from edge textured Ti-6Al-4V bar and tested at temperatures in the range 800 to 975
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00553471
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  • 8
    Electronic Resource
    Electronic Resource
    Superplastic deformation of Al-Li-Cu-Mg alloy sheet (1986)
    Springer
    Journal of materials science 21 (1986), S. 1368-1376 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Al-2.5 Li-1.2 Cu-0.6 Mg-0.12 Zr (wt%) alloy sheet was cold-rolled, solution heat-treated for 20 min at 510° C, prestrained by 3% and superplastically deformed at 450 to 540° C at strain rates between 1×10−4 and 2.8×10−1 sec−1. The maximum elongation obtained was 300%. Significant cavitation occurred above about 0.5 strain at a rate (void volume/unit strain) of 4% at 540° C and 6% at 500° C. The onset of cavitation coincided with a reduction in the room-temperature tensile properties after reheat-treatment. During annealing at 500 to 540° C, grain coarsening near the sheet surface was associated with magnesium and lithium depletion. Superplastic deformation produced a fine equiaxed microstructure by dynamic recrystallization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00553277
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  • 9
    Electronic Resource
    Electronic Resource
    Tensile microstrain properties of vapour quenched and rolled Al-alloys (1986)
    Springer
    Journal of materials science 21 (1986), S. 3183-3193 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Al-alloy deposits produced by quenching from the vapour phase were rolled into sheet and tensile stress-strain curves were obtained in the microstrain region (〈10−4 strain). Two binary alloys (Al-5% Cr and Al-11% Cr) and two ternary alloys (Al-8% Cr-1.2% Fe and Al-6% Cr-1.0% Fe) were tested (compositions in wt%). The corresponding tensile strengths were 375 and 590 MPa for the binary alloys, and 679 and 662 MPa for the ternary alloys. The microyield stresses (the stress to produce a residual plastic strain of 2×10−6) for the vapour quenched alloys were less than 26 MPa compared with 100 to 260 MPa for commercial aluminium alloys. When the vapour quenched alloys were retested immediately after prestrain, the values were much greater (166 to 254 MPa), but after resting at room temperature for 7 to 106 days low values were again obtained. The low microyield stresses were attributed to the high density of dislocations present in the rolled sheet and the behaviour observed may be characteristic of high strength dispersion hardened Al-alloys produced by rapid solidification and rolling.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00553356
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  • 10
    Electronic Resource
    Electronic Resource
    On the testing of diffusion-bonded overlap joints between clad Al-Zn-Mg alloy(7010) sheet (1987)
    Springer
    Journal of materials science 22 (1987), S. 1597-1608 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The shear strengths of diffusion-bonded overlap joints between silver-coated clad 7010 Al-alloy sheets of thicknesst = 3.2 mm have been determined for various overlap lengths (L) end out-of-plane bending constraints. The measured shear strength decreased with increase inL due to increased bending and peel stresses associated with the asymmetry of the loading path. For overlaps greater than about 1.25 to 1.9t peel fracture replaced shear fracture as the dominant deformation mode. The bond was more sensitive to peel stresses in the aged state than in the solution heat-treated state. For evaluating diffusion bonds between aluminium-alloys it is recommended that the bond area andL be measured on fracture surfaces and the shear strength be obtained for overlaps in the rangeL/t = 0.6 to 0.8 using overlap test pieces which are restrained from bending.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01132379
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