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Modeling of thermal cycles and microstructural analysis of pipeline steels processed by friction stir processing
(2018-10-01)
During friction stir welding or processing (FSP), temperature and deformation have influence on the final microstructure and mechanical properties. Studying microstructures before and after welding might help interpreting ...
Limiting the influence of friction on the split Hopkinson pressure bar tests by using a ring specimen
(PERGAMON-ELSEVIER SCIENCE LTDOXFORD, 2012)
The deformation of a ring under axial compression is analyzed in order to estimate a favorable ring specimen geometry capable of limiting the influence of friction on the stress-strain curve obtained from SHPB tests. The ...
Theoretical Approach Including Friction for Determining Strain Limits in Punch Stretching of Anisotropic Sheet Metals
(Amer Inst Physics, 2010-01-01)
A new analytical theory including friction was developed to assess strain limits in punch stretching of anisotropic sheet metals. This new approach takes into consideration the anisotropic behaviour of sheet materials and ...
Anelastic Relaxation Measurements in Nb-46wt%Ti Alloys with Interstitial Solutes in Solid Solution
(Trans Tech Publications Ltd, 2012-01-01)
Anelastic relaxation measurements were performed in a Nb-46wt%Ti alloy, in the temperature range of 300 to 700 K, using a torsion pendulum operating at an oscillating frequency near 2.0 Hz. The samples were measured in ...
Anelastic Relaxation Measurements in Nb-46wt%Ti Alloys with Interstitial Solutes in Solid Solution
(Trans Tech Publications Ltd, 2012-01-01)
Anelastic relaxation measurements were performed in a Nb-46wt%Ti alloy, in the temperature range of 300 to 700 K, using a torsion pendulum operating at an oscillating frequency near 2.0 Hz. The samples were measured in ...
Pool palms
(International Dermoscopy Society, 2020)
Evolution of Martensitic Microstructure on Carbon Steel Tempered at Low Temperatures
(Elsevier, 2012-01)
This work presents the microstructural changes of a carbon steel during tempering at low temperatures (first stage of tempering), and its effects in the second and third stages. These changes are determined by internal ...
Measurement of oxygen atom diffusion in Nb and Ta by anelastic spectroscopy
(ABM, ABC, ABPol, 2005-09-01)
Impurity interstitial atoms present in metals with BCC structure can diffuse in the metallic matrix by jumps to energetically equivalent crystallographic sites. Anelastic spectroscopy (internal friction) is based on the ...
Measurement of oxygen atom diffusion in Nb and Ta by anelastic spectroscopy
(ABM, ABC, ABPol, 2005-09-01)
Impurity interstitial atoms present in metals with BCC structure can diffuse in the metallic matrix by jumps to energetically equivalent crystallographic sites. Anelastic spectroscopy (internal friction) is based on the ...
Effect of impurities on mechanical relaxation in niobium
(ABM, ABC, ABPol, 2003-12)
Measurements of internal friction as a function of temperature were performed in samples of Nb containing different amounts of substitutional (Zr) and interstitial (O, N) solutes. These data were resolved using the method ...