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Get A QuoteSevere plastic deformation spd has been widely employed to refine the grain size of mg alloys, with the main objective to improve the strength and ductility of mg alloys, since the well-known hall-petch equation suggests that a decreased grain size leads to an increased yield strength.However, the yield strength of mg alloys processed by spd is often decreased even though the grain size is.
Read More +Hot compression tests of zk60 magnesium alloy are performed on gleeble-1500 thermal simulator testing machine at temperatures ranging from 250 to 400 and strain rates between 0.001s-1 and 1s-1.The relationship between flow stress and deformation.
Read More +Magnesium alloys are widely used in automotive and aerospace industries, where they can be exposed to high strain rate conditions such as car crash and ballistic impact.Grain size is an important factor that can affect the mechanical behavior of magnesium alloys at high strain rates.Therefore, it is very important to evaluate the effects of grain size on the dynamic mechanical response of.
Read More +In this study, az31 in form of sheet, plate and extruded rod and az61 wire with different initial grain sizes were used to investigate the effect of initial grain size on recrystallization behavior and the formation of fine recrystallized grain the so-called necklace structure.Nucleation and growth of recrystallized grains along grain boundaries has been examined.
Read More +Effect of twin boundary on the initial yield behavior of magnesium nanopillars under compression molecular dynamics simulations.Hai mei 1, shuang xu 2, lisheng liu 2.Grain size 10 nm.Singh a and schuh c a 2016 effect of twin boundaries on indentation behavior of magnesium alloys j.Alloys compd.685 101623.Crossref google.
Read More +The effect of electropulsing treatment ept on quasi-static compression behavior and anisotropy of az31 mg alloy were investigated based on quasi-static compression test.The results show that the orientation of the sample has a significant effect on the deformation mechanism of metal and this mechanism can be changed by pre-deformation and ept.
Read More +Hot-extruded az31 alloy was subjected to compression at room temperature.The influence of grain size and grain orientation on the compression behavior of the specimens was examined by optical microscopy, compression test and x-ray diffraction.Abundant.
Read More +Fig.3 effect of strain rate on distribution of grain size in deformed az31 mg alloy at various strain rates and at 300 c grain refinement.The strain rate of 1 s1 takes the second place.This also indicates that the grain size of the deformed samples with strain1 s.
Read More +Numerical simulation for dynamic compression behavior of az31b magnesium alloy and 6065 aluminum alloy liu zheng,zhang feng,mao ping-li,wang feng school of materials science and engineering, shenyang university of technology, shenyang 110870.
Read More +College of material science and engineering, chongqing university, chongqing 400044, chinaeffect of crystal orientation on the deformation behavior of the magnesium alloy az31 during plane strain compressionjjournal of chinese electron microscopy 5.
Read More +Effect of initial grain size on dynamic grain refinement taki ng place in an az31 mg alloy was studied in compression at 573k and at 3 x 10-3 s-1.The main results are summarized as follows.1 the deformation behaviors depend clearly on grain size.The curve f or d 0 90 m m shows rapid.
Read More +Hot deformation and associated structural changes were studied in compression of a magnesium alloy az31 with initial grain sizes d0 of 22 m and 90 m at a temperature of 573k.D0 influences significantly the flow curve and the kinetics of grain refinement during hot deformation.For d0 22 m, grain fragmentation takes place due to frequent formation of kink bands initially at.
Read More +Effect of grain size on compressive behaviour of titanium at different strain rates 89.L.Gao, effects of grain size, texture and twinning on mechanical properties and work-hardening behavior of az31 magnesium alloys, mater.Sci.
Read More +Grain size effects within wrought magnesium alloys the potent effect of grain size on the mechanical properties of magnesium alloys has been established in the literature 69.In particular, there has recently been renewed interest in the possibility that mechanical twinning- and dislocation glidedominated plasticity have distinct grain size dependences.
Read More +Commercially pure magnesium was processed by severe plastic deformation techniques and thermo-mechanical routes to produce samples with grain sizes in the range from 1.0 to 300 m.Tensile testing of a fine-grained material revealed a decrease in hardening and an increase in strain rate sensitivity with decreasing testing strain rate from 102 to 107 s1.
Read More +However the individual effect from texture and grain size was not fully understood.Deformation and fracture behavior of ultrafine-grained az31 magnesium alloy processed by severe plastic.
Read More +The effects of grain size on the tensile and compressive strain hardening behaviors for extruded zk61 alloys have been investigated by uniaxial tensile and compressive tests along the extrusion directions.Cylindrical tension and compression specimens of extruded zk61 alloys with various sized grain were fabricated by annealing treatments.
Read More +The effect of grain size on the deformation behavior of magnesium alloys was investigated using acoustic emission techniques.Samples considered included zm21, zk30, ze10, and zek100.
Read More +The similar recovery rate for cg, fg1 and fg2 might be related to the similar basal plane tilt.In summary, the difference in hardening behavior between pd and td could be related to different deformation mechanisms introduced by grain size and texture.4.4.Effect of grain size.
Read More +Commercially pure magnesium was processed by a single pass of equal channel angular pressing ecap at 523 k.The grain structure was evaluated at the region near the intersection between the channels of the die.Compression test workpieces were machined from the as-received material and the material processed by ecap.
Read More +Commercially pure magnesium was processed by a single pass of equal channel angular pressing ecap at 523 k.The grain structure was evaluated at the region near the intersection between the channels of the die.Compression test workpieces were machined from the as-received material and the material processed by ecap.These workpieces were tested at room temperature.
Read More +Effect of grain size on compression behavior of magnesium processed by equal channel angular pressing article pdf available in journal of materials research and technology 2130-35 march.
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