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  • 1985-1989  (6)
  • 1980-1984  (5)
Source
Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Mechanisms of superplastic flow of metals and alloys (1981)
    Springer
    Czechoslovak journal of physics 31 (1981), S. 223-227 
    Details
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01959447
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  • 2
    Electronic Resource
    Electronic Resource
    Current problems of superplasticity (1988)
    Springer
    Czechoslovak journal of physics 38 (1988), S. 395-400 
    Details
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The possibility of conversion of intermetallic materials (Ti-Al, Fe-Cr-Co and Mn-Al-C) into the superplastic state is shown. The microstructural changes occurring during the superplastic flow in the Ti-Al intermetallics are analysed. A very important role of grain boundary structure in the superplastic deformation of intermetallics is shown. The experimental results obtained are interpreted on the basis of a model taking into account interactions between lattice dislocations and grain boundaries during the superplastic deformation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01605412
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The influence of texture on the mechanical properties of a superplastic magnesium alloy (1988)
    Springer
    Journal of materials science 23 (1988), S. 4369-4374 
    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 Superplastic (SP) characteristics of a MA15 magnesium alloy subjected to tensile deformation in both textureless and textured states with identical fine grain structures have been studied. The existence of crystallographic texture is found to be the cause of the anisotropy of flow stress and plasticity. The shift of SP optimum strain rate towards higher values due to the strengthening of texture is observed. A special experiment has indicated that the difference of the alloy behaviour in textureless and textured states results from the operation of grain boundary sliding stimulated by the intragrain dislocation slip.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00551933
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of superplastic deformation on the structure and properties of alloy MA21 (1981)
    Springer
    Metal science and heat treatment 23 (1981), S. 188-192 
    Details
    ISSN: 1573-8973
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Conclusions 1. Superplastic deformation improves the strength characteristics of alloy MA21. 2. Treatment under conditions of superplasticity makes it possible to obtain a condition of the alloy characterized by structural homogeneity and even distribution of the alloying elements. 3. There is a substantial correlation between the structure of the alloy after various treatments and the stability of the mechanical properties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00769613
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Influence of microstructure on plasticity of VT1-00 alloy (1985)
    Springer
    Metal science and heat treatment 27 (1985), S. 51-54 
    Details
    ISSN: 1573-8973
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00741890
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  • 6
    Electronic Resource
    Electronic Resource
    Effect of the chemical composition on the structure and mechanical properties of alloys of the system Mn−Al−C in the magnetic region (1988)
    Springer
    Metal science and heat treatment 30 (1988), S. 795-799 
    Details
    ISSN: 1573-8973
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Conclusions 1. An increase of the manganese content of alloys of the system Mn−Al−C from 68.9 to 73.5% increases the stability of the high-temperature ε-phase, and as a result of cooling in air from the homogenization temperature the ε-phase becomes fixed in the structure. 2. An increase of the manganese content of alloys of the system Mn−Al−C also lowers the temperatures of the beginning and end of the ε→τ-transformation and at the same time broadens its temperature interval. 3. Enrichment of alloys of the system Mn−Al−C with aluminum or manganese relative to the optimal composition leads to the appearance of excess nonmagnetic η- and β-phases, respectively, and these lower the level of magnetization; in addition to that, in the alloy with 73.5% Mn thermal stability is impaired as a result of disintegration of the ferromagnetic phase. 4. A small amount of η-phase (up to 15%) lowers the deformability of the alloy, which manifests itself in higher yield stresses and lower ductility, but when the alloy contains the same amount of β-phase, it leads to a considerable lowering of the yield stress.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00699568
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  • 7
    Electronic Resource
    Electronic Resource
    Effect of prior working on the structure and deformation capacity of Mn−29.5% Al−0.5% C alloy (1988)
    Springer
    Metal science and heat treatment 30 (1988), S. 134-138 
    Details
    ISSN: 1573-8973
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Conclusions 1. Alloy Mn−29.5%Al−0.5%C in the homogenized condition at temperatures below 650°C exhibits low working capacity, i.e., high flow stress and brittleness, which is due to presence in the alloy of lamellar τ-phase. Upsetting of the alloy is possible only in the temperature range 650–750°C and at deformation rates 5·10−3–10−2 sec−1. 2. As a result of extrusion at 700°C recrystallized fine τ-phase grains are formed with a size of 0.5–2 μm. With extrusion in the single-phase ε-region (950°C) there is ε-phase grain refinement, and then during subsequent cooling fine-grained τ-phase forms. Deformation by extrusion with ε=80% promotes total transformation of lamellar τ-phase into granular phase which causes an improvement in the working capacity of alloy Mn−29.5%Al−0.5%C. 3. In alloy Mn−29.5%Al−0.5%C, containing τ-phase with a grain size of 0.5–2 μm the superplasticity effect is observed which is more clearly developed with t=650–750°C and vd=10−2–10−3 sec−1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00777824
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  • 8
    Electronic Resource
    Electronic Resource
    Superplasticity of commercial aluminum alloys (1981)
    Springer
    Metal science and heat treatment 23 (1981), S. 664-668 
    Details
    ISSN: 1573-8973
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Conclusions 1. Superplasticity can be induced in wrought, heat-treatable, and non-heat-treatable aluminum alloys such as AK6, V96Ts, 01420, AMg6, and AK4-1 that differ in composition and physicomechanical properties. Alloying of aluminum alloys with transition metals as antirecrystallizers, especially zirconium, makes it possible to obtain the fine-grained stable structure required as the result of preliminary deformation heat treatment. 2. Treatment utilizing the superplasticity effect ensures even fine-grained macrostructures and microstructures in parts made from commercial aluminum alloys. 3. The characteristics of the structure after SDHT have a positive effect on the combination of mechanical properties of aluminum alloys — the plasticity increases, the properties are uniform through the volume, and the anisotropy of the mechanical properties decreases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00712607
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  • 9
    Electronic Resource
    Electronic Resource
    Effect of γ′-phase content on preparation schedule for structure and superplasticity of high-temperature nickel alloys (1989)
    Springer
    Metal science and heat treatment 31 (1989), S. 526-532 
    Details
    ISSN: 1573-8973
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00802271
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  • 10
    Electronic Resource
    Electronic Resource
    The influence of texture on superplasticity of the titanium alloy VT 6 (1981)
    Springer
    Journal of materials science 16 (1981), S. 2501-2506 
    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 This paper describes a specific influence of crystailographic texture on tensile properties of the titanium alloy VT6 under superplastic flow conditions. The texture effect has been examined on alloy states with identical microstructures but with different preferred grain orientations. Tests over wide temperature and strain-rate intervals have shown that the formation of a strong texture as a result of pretreatment of a titanium alloy leads to a decrease in flow stress, an increase in plasticity and a shift of the optimum strain-rate region to higher rates. Data on the effect of texture on the anisotropy of properties of the VT6 alloy are also presented. The present results suggest that the influence of preferred orientation on the characteristics of superplastic flow is a general phenomenon for finegrained superplastic materials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01113587
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