... characteristic of the AA 5052-H32 FSSW sheet during high-velocity forming is defined by Hill's 1948 yield criterion. The fundamental equations of plastic deformation are described in Supplemental Materials on the ASME Digital Collection. Fig. 7 Rate-dependent stress–strain curves for FS spot weld...

... the nucleation of the twin to the reorientation of the nanowire. For [110]-oriented Fe nanowires, the plastic deformation is dominated by dislocation slip. The independent events such as the nucleation, slip, and annihilation of dislocations are the causes of the unsteady fluctuations in the stress–strain curve...

...P. C. Zhao; Y. T. Hu; L. L. Wang; Z. W. Liu The plastic deformation during flash-butt welding (FBW) and its effects on weld quality are investigated by using numerical and experimental methods. The electro-thermo-mechanical coupling model of FBW is validated by comparing the calculated temperature...

... the vicinity of the rivet is presented in Fig. 7 . The inclusion of heat generation in the plastic deformation is essential for accurately capturing the flow stress in the SPR simulation. In fact, Fig. 7( a ) shows that for the element selected, a 160 °C temperature increase was observed due to the large...

... 10 2011 particle reinforced composites particle size plastic deformation plasticity size effect stress-strain relations work hardening strain gradient plasticity metal matrix composites particle size effect length scale geometrically necessary dislocations Advanced...

... effect. 15 11 2010 06 03 2011 18 07 2011 18 07 2011 elastoplasticity fatigue plastic deformation steel work hardening Many existing industrial structures such as pressure layers in nuclear plants, turbine fan blades in aviation or energetics, and even variety...

... compounds cavitation crazing differential scanning calorimetry drawing (mechanical) elastic deformation filled polymers particle reinforced composites particle size plastic deformation scanning electron microscopy tensile strength viscoelasticity viscoplasticity voids (solid) 26 03...

.... Each method is evaluated at a number of temperatures. aluminium alloys boron alloys carbon chromium alloys extrapolation fatigue gas turbines molybdenum alloys nickel alloys niobium alloys plastic deformation superalloys tantalum alloys tensile strength titanium alloys tungsten alloys...

... 2011 cold working creep plastic deformation plasticity stainless steel yield stress Equations 1 , 5 , 6 are not derivable from “first principle” equations ( 1 ); rather, they are purely phenomenological. A fundamental explanation as to why one equation form is better than another...

...Marcin Hojny; Miroslaw Glowacki The subject of the presented paper is the modeling of strain-stress relationship, which is the main mechanical property characteristic of the behavior of steel subjected to plastic deformation. The major challenge of the research is the temperature of the deformation...

...Yong Huang; Mason Morehead Various methods for the production of bulk nanostructured (NS)/ultrafine-grained (UFG) materials have been developed, including equal channel angular extrusion (ECAE), a form of severe plastic deformation. Using an ECAE NS/UFG copper bar as an example, this study has...

...C. D. Hopkins; M. J. Dapino; S. A. Fernandez Ultrasonic additive manufacturing (UAM) is an emerging solid-state fabrication process that can be used for layered creation of solid metal structures. In UAM, ultrasonic energy is used to induce plastic deformation and nascent surface formation...

...X. H. Zhou; X. Su The surface topography of aluminum and titanium alloys after plastic deformation is investigated using white-light interferometry. The surface profiles of tensile samples in the longitudinal and transverse directions are analyzed. The surface develops self-affine roughness...

... MPa for internal pressurization, and 300 ° C for forming temperature. Using this testing machine, experiments of T-shape protrusion of magnesium alloy AZ61 tubes at elevated temperatures are carried out. A commercial finite element code DEFORM 3D is used to simulate the plastic deformation of the tube...

... Bal 24 11 2009 27 03 2010 18 06 2010 18 06 2010 bending crystal microstructure fatigue internal stresses martensitic steel plastic deformation shot peening lath martensite residual stress relaxation crystal plasticity shot peening It is well...

...E. A. Baxevani; A. E. Giannakopoulos The present paper presents a relation between the vickers hardness HV and the loading stiffness C of instrumented vickers indentation of metal substrates. The relation is based on the fact that the nonaxisymmetry of the plastic deformation of the vickers...

... is made between ECAP and NECAP. Finally, texture predictions are presented for NECAP of fcc polycrystals. The advantages of this severe plastic deformation process are the following: (i) significantly larger strains can be obtained in one pass with respect to the classical ECAP process, (ii) grains become...

... 2009 15 06 2010 15 06 2010 cracks filled polymers particle reinforced composites plastic deformation stress-strain relations thermoforming thermoforming particulate reinforced composites image analysis stress whitening high temperature deformation Thermoformed...

... plastic deformation plasticity shear strength tensile strength Most structural components are subjected to cyclic loading with some type of overload (OL), including structural components in military aircraft. The modeling effects of initial overloads on the fatigue behavior of metals...

... and on the fatigue life are carefully studied. It shows the dependence of the fatigue life on the mean stress value. 14 04 2008 13 02 2009 02 11 2009 02 11 2009 aluminium alloys elasticity fatigue micromechanics plastic deformation plasticity probability stress-strain relations...