Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 2005-2009  (13)
  • 1970-1974  (1)
Source
Material
Years
Year
  • 11
    Electronic Resource
    Electronic Resource
    EBSD and TEM Characterization of Ultrafine Grained High Purity Aluminum Produced by Accumulative Roll-Bonding (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 512 (Apr. 2006), p. 91-96 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: High purity aluminum (99.99% purity) was severely deformed by accumulativeroll-bonding (ARB) to a thickness reduction of 98.4%. Quantitative microstructural characterization of the deformed sample was carried out by electron backscatter diffraction (EBSD) and transmission electron microscopy (TEM). EBSD scans at various locations from the sample surface to the mid-thickness revealed a fairly uniform and equiaxed structure, although a small fraction of an elongated structure parallel to rolling direction (RD) was also observed. Misorientation angledistributions for grain boundaries of which misorientation angle was larger than 2° were evaluated by EBSD, showing that more than 70% of the boundaries were high-angle ones (〉15°). More detailed structural features, such as low-angle boundaries (〈2°) and dislocations between boundaries were characterized by TEM. The TEM results indicated that about 17% of the boundaries havemisorientations 〈2° and that the fraction of high-angle boundaries is about 52%. An estimated yield strength based on the structural parameters determined by TEM was in good agreement with the measured value
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/12/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.512.91.pdf
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 12
    Electronic Resource
    Electronic Resource
    Recovery and Recrystallization as a Function of Deformed Microstructure Orientation in Coarse Grained Cold-Rolled Ni (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 558-559 (Oct. 2007), p. 149-152 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The effect of crystal orientation on the recovery and recrystallization of cold-rolled Ni(99.96% purity) has been investigated. Particular attention was paid to the annealing response ofregions with either the Copper (C), Brass (B) or S rolling texture orientations. Samples with aninitial average grain size of approx. 500μm were deformed to strains of up to εvM = 4.5. As a resultof the large initial grain size, even after high rolling reductions it is possible to find sufficiently largeregions of material with similar crystal orientation to analyze the recovery and recrystallizationbehaviour as a function of crystal orientation. Microstructural investigations were carried out in thescanning electron microscope using both electron channeling contrast and electron backscatterdiffraction orientation mapping. Both the S and C orientation regions exhibit a heterogeneousmicrostructure containing bands of localized deformation. The presence of volumes surrounded byhigh angle boundaries in these regions strongly influences both the recovery and recrystallizationbehaviour of the material. Twinning was observed also to play an important role in the generation ofrecrystallized grains, with twin chains of up to 3 generations being observed
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/17/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.558-559.149.pdf
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 13
    Electronic Resource
    Electronic Resource
    Nanostructured Aluminium - Recovery and Recrystallization (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 558-559 (Oct. 2007), p. 201-206 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The isochronal annealing behavior of nanostructured commercial purity aluminium(AA1100 and AA1200) following either cold – rolling or accumulative roll bonding up to an ultrahigh strain of εvM = 6.2 (99.5% reduction in thickness) has been studied via hardness testing and bya microstructural investigation. A large effect of rolling strain is observed on the recovery attemperatures below approx. 200 °C. At higher temperatures an assessment of the changes inhardness and microstructure leads to a characterization of the annealing process as one ofconventional (discontinuous) recrystallization
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/17/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.558-559.201.pdf
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 14
    Electronic Resource
    Electronic Resource
    Strengthening of Nickel Deformed by High Pressure Torsion (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 584-586 (June 2008), p. 417-421 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The strength of a deformed metal depends on the content of high angle boundaries, lowangle dislocation boundaries and the dislocations between the boundaries. High angle boundariescontribute by Hall-Petch strengthening, whereas for the low angle dislocation boundaries anddislocations between boundaries the strengthening is proportional to the square root of the dislocationdensity. Based on an assumption of additivity of these contributions, the flow stresses of metalsdeformed by cold rolling have been calculated successfully. In the present investigation pure Ni(99.9%) has been deformed by high pressure torsion (HPT) to von Mises strains of 0.9, 1.7, 8.7 and 12.The strength of the HPT Ni has been determined by Vickers microhardness (HV) measurements andthe microstructural parameters have been determined by transmission electron microscope (TEM) inthe longitudinal section. HPT has been compared with deformation by cold rolling and torsion basedon the structural evolution with strain and the stress-structure relationship. Based on an assumption ofa linear additivity of boundary strengthening and dislocation strengthening, good agreement has beenfound between the calculated and the experimental flow stress
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.584-586.417.pdf
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...