... adjustable parameters, it is shown that strain-induced vacancies can also explain the high-stress exponent of pure nickel. Probably, the most characteristic feature of creep of metallic alloys is that the deformation can continue at constant stress or load. For dislocation creep, this means that recovery...

...X. Lin; T. M. Yue; H. O. Yang; W. D. Huang A graded binary titanium-nickel alloy with a compositional gradient, from elemental Ti to Ti – 23.2 at . % Ni, has been successfully deposited using laser rapid forming. A metallurgical study of the phase evolution along the compositional gradient showed...

... dislocation characterization is applied to a well-annealed nickel specimen and the results including visualizations of mesoscale structures are presented. b Burger’s vector e Levi–Civita permutation tensor N total number of voxels in a region t dislocation line...

... and spherical void geometries in nickel that were validated by experiments. The number of voids, void orientation, and void spacing were all varied and tested and simulated under uniaxial loading conditions. The micromechanical results showed excellent agreement with experiments in terms of void volume...

...L. Q. Zhou, Associate Professor; Y. P. Li; Y. C. Zhou The elastic-plastic finite element method of a dynamic explicit algorithm was used to simulate the deep drawing processes of nickel coating electrodeposited on a steel substrate to form an advanced battery shell. The Belytschko-Wong-Chiang shell...

... 14 September 2004 22 02 2005 nickel metallic thin films bending micromechanics micromechanical devices plasticity plastic deformation stress-strain relations fatigue testing fatigue fracture mechanics internal stresses In recent years, there has been considerable...

... of anisotropic material behavior and the effect of changes in grain orientation as the crack grows. The effect of local crystallography was studied in multicrystalline Compact-Tension (CT) specimens of pure nickel and a cast Ni-based superalloy. Orientation Imaging Microscopy (OIM) was used to map...

... force and conditions for cracking mode transition. Manuscript received January 1, 2003; revision received September 14, 2004. Review conducted by: W. Soboyejo. 01 January 2003 14 September 2004 22 02 2005 nickel fatigue cracks fracture mechanics fatigue testing bending...

... analyzer system. In the experiments the 0.1 mm thin foil specimens of pure nickel and copper were gradually loaded toward final failure and the evolution of grain boundaries and slip bands inside grains was observed and recorded digitally via microscope and CCD camera throughout the whole time history...

... Cherkaoui and La´szlo´ S. To´th. 06 April 2001 03 July 2001 crystal microstructure plastic deformation dislocations cold rolling internal stresses X-ray diffraction copper nickel aluminium iron Applying plastic deformation on metals leads to defects in the crystal...

... received by the Materials Division April 14, 1999; revised manuscript received July 31, 2000. Associate Technical Editor: J. W. Ju. 14 April 1999 31 July 2000 secondary cells nickel substrates electrochemical electrodes percolation statistical analysis fibres random media...