Relationship between Dislocation Densityand Hydrogen

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[1609.05431] Kinetics of dislocation annealing and the

Sep 18,2016 Relationship between Dislocation Densityand Hydrogen#0183;Abstract In-situ powder diffraction was used to study the annealing of dislocations in the archetypal hydrogen absorbers Pd and LaNi5.The relationship between dislocations and trapped hydrogen was explored using thermally induced desorption.It was found that the dislocations in Pd caused by hydrogen absorption anneal over a wide range of temperatures and that although they[1609.05431] Kinetics of dislocation annealing and the Sep 18,2016 Relationship between Dislocation Densityand Hydrogen#0183;Abstract In-situ powder diffraction was used to study the annealing of dislocations in the archetypal hydrogen absorbers Pd and LaNi5.The relationship between dislocations and trapped hydrogen was explored using thermally induced desorption.It was found that the dislocations in Pd caused by hydrogen absorption anneal over a wide range of temperatures and that although theyThe relationship between the dislocations and Oct 11,2016 Relationship between Dislocation Densityand Hydrogen#0183;In this work,we propose a formation mechanism to explain the relationship between the surface morphology (and microstructure) and dislocations in the In 0.82 Ga 0.18 As/InP heterostructure.The In 0.82 Ga 0.18 As epitaxial layers were grown on the InP (100) substrate at various temperatures (430 Relationship between Dislocation Densityand Hydrogen#176;C,410 Relationship between Dislocation Densityand Hydrogen#176;C and 390 Relationship between Dislocation Densityand Hydrogen#176;C) using low pressure metalorganic chemical vapor deposition (LP-MOCVD).

The relationship between the dislocations and

Oct 11,2016 Relationship between Dislocation Densityand Hydrogen#0183;In this work,we propose a formation mechanism to explain the relationship between the surface morphology (and microstructure) and dislocations in the In 0.82 Ga 0.18 As/InP heterostructure.The In 0.82 Ga 0.18 As epitaxial layers were grown on the InP (100) substrate at various temperatures (430 Relationship between Dislocation Densityand Hydrogen#176;C,410 Relationship between Dislocation Densityand Hydrogen#176;C and 390 Relationship between Dislocation Densityand Hydrogen#176;C) using low pressure metalorganic chemical vapor deposition (LP-MOCVD).The Relationship between Dislocation Density and Crystal The Relationship between Dislocation Density and Crystal Width in White Tin Single Crystals Ojima,Kozo; Hirokawa,Tomoo; Abstract.Publication Japanese Journal of Applied Physics.Pub Date August 1979 DOI 10.1143/JJAP.18.1631 Bibcode 1979JaJAP..18.1631O The Relationship between Dislocation Density and Crystal The Relationship between Dislocation Density and Crystal Width in White Tin Single Crystals Ojima,Kozo; Hirokawa,Tomoo; Abstract.Publication Japanese Journal of Applied Physics.Pub Date August 1979 DOI 10.1143/JJAP.18.1631 Bibcode 1979JaJAP..18.1631O

The Dislocation Mechanism of Stress Corrosion

Oct 19,2015 Relationship between Dislocation Densityand Hydrogen#0183;An observation of the dislocation mechanisms operating below a naturally initiated hot-salt stress corrosion crack is presented,suggesting how hydrogen may contribute to embrittlement.The observations are consistent with the hydrogen-enhanced localized plasticity mechanism.Dislocation activity has been investigated through post-mortem examination of thin foils prepared by focused ionThe Contribution of Dislocation Density and Velocity to Jul 16,2018 Relationship between Dislocation Densityand Hydrogen#0183;Abstract.Constant load indentation creep and load relaxation tests were performed on several FCC Al,Ag,and Ni metals that exhibit indentation size effect (ISE) to examine the coupled relationship between the activation volume V* at specific loads,the dislocation density ,and the dislocation velocity (v) from kinetics-based perspective.The influence of the ISE on the dislocationSuppression Mechanism of Strain-age-hardening in Carbon The dislocation distribution is known to localize when a pre-strain is provided under the hydrogen effect,i.e.hydrogen-enhanced shear localization.16) As a result,it is assumed that a slip plane having high dislocation density and another slip plane having relatively low dislocation density coexist as

Relationship between dislocation density and oxygen

T1 - Relationship between dislocation density and oxygen concentration in silicon crystals during directional solidification.AU - Ide,Tomoro.AU - Harada,Hirofumi.AU - Miyamura,Yoshiji.AU - Imai,Masato.AU - Nakano,Satoshi.AU - Kakimoto,Koichi.PY - 2018/6/7.Y1 - 2018/6/7Relationship between dislocation density and contactWe suggested the possibility to suppress dislocation generation by controlling the microstructure of dendrite crystals in practical size Si wafers grown by the floating cast method.With the floating cast method,the contact angle between adjacent dendrite crystals can be used as a structural parameter to define grain boundaries (GBs).We fabricated a practical size silicon ingot fully covered Relationship between dislocation density and contactWe suggested the possibility to suppress dislocation generation by controlling the microstructure of dendrite crystals in practical size Si wafers grown by the floating cast method.With the floating cast method,the contact angle between adjacent dendrite crystals can be used as a structural parameter to define grain boundaries (GBs).We fabricated a practical size silicon ingot fully covered

Relationship between Dislocation Density and Macro

A relationship between dislocation density and macro strain was investigated for GLIDCOP,dispersion-strengthened copper with ultra-fine particles of aluminum oxide.The dislocation density was estimated by applying the Warren-Averbach method to aRelated searches for relationship between dislocation densidislocation density formuladislocation density definitiondislocation density unitsSome results are removed in response to a notice of local law requirement.For more information,please see here.Previous123456NextThe Dislocation Mechanism of Stress Corrosion Oct 19,2015 Relationship between Dislocation Densityand Hydrogen#0183;An observation of the dislocation mechanisms operating below a naturally initiated hot-salt stress corrosion crack is presented,suggesting how hydrogen may contribute to embrittlement.The observations are consistent with the hydrogen-enhanced localized plasticity mechanism.Dislocation activity has been investigated through post-mortem examination of thin foils prepared by focused ionRelated searches for relationship between dislocation densidislocation density formuladislocation density definitiondislocation density unitsSome results are removed in response to a notice of local law requirement.For more information,please see here.12345NextAtomistic study of the competitive relationship between In this study,we investigated the occurrence of interactions between a {112} Relationship between Dislocation Densityand Hydrogenlt;111 Relationship between Dislocation Densityand Hydrogengt; edge dislocation and a hydrogen atom via the estimation of the stress-dependent energy barriers for the dislocation motion and hydrogen diffusion in alpha iron using atomistic calculations.

Related searches for relationship between dislocation densi

dislocation density formuladislocation density definitiondislocation density unitsSome results are removed in response to a notice of local law requirement.For more information,please see here.Observation of hydrogen trapping at dislocations,grain Jan 10,2020 Relationship between Dislocation Densityand Hydrogen#0183;Hydrogen is important for energy applications such as fuel cells but tends to diffuse into materials and make them more susceptible to fracture.Chen et al.tackled the challenge of identifying the exact location of hydrogen atoms in two common steels.The light weight and high mobility of hydrogen creates serious problems with conventional techniques.Numerical Analysis of the Coupling between Hydrogen Hydrogen plays a detrimental effect on the degeneration of titanium and its alloys,and it is very important to quantify the hydrogen concentration when estimating the microstructure evaluation of titanium and its alloys in a hydrogen environment.In this paper,the hydrogen atoms are assumed to reside in interstitial sites and in trapping sites such as dislocations,and a mechanic-diffusion

Numerical Analysis of the Coupling between Hydrogen

Hydrogen plays a detrimental effect on the degeneration of titanium and its alloys,and it is very important to quantify the hydrogen concentration when estimating the microstructure evaluation of titanium and its alloys in a hydrogen environment.In this paper,the hydrogen atoms are assumed to reside in interstitial sites and in trapping sites such as dislocations,and a mechanic-diffusion Influence of plastic deformation and Cu addition on Oct 01,2019 Relationship between Dislocation Densityand Hydrogen#0183;Relationship between the dislocation density and sample weight loss in 1.0 M NaCl aqueous solution (pH 1.0). In the case of Cu-free steel,the dislocation density was increased by pre-straining (dislocations are one type of hydrogen trap sites),which promotes hydrogen occlusion,thereby promoting the cathodic reaction (hydrogen evolution Influence of Nanoxides on Diffusivity and Solubility of hydrogen permeation,because the permeation only starts after all trappings are filled.Therefore the hydrogen permeation is delayed because hydrogen trap sites on matrix.Cao and coworkers10 investigated the relationship between amount of cold work,dislocation density and hydrogen

Hydrogen in Ti and Zr alloys industrial perspective

Jun 12,2017 Relationship between Dislocation Densityand Hydrogen#0183;A rationale for solute hydrogen lowering the dislocation density is provided with reference to the Orowan equation,which describes the relationship between strain rate,dislocation density,average velocity and the magnitude of the Burgers vector of the mobile dislocations,as follows :High dislocation densityinduced large ductility in A general relationship between plastic strain and mobile dislocation density ( m) can be written as where L is the average glide distance of the mobile dislocations (~400 nm).We assumed the ratio of mobile dislocation density to total dislocation density to be 18% for deformation-induced martensite ( 26 ),given a mobile dislocation density Extreme reduction of on-resistance in vertical GaN pn May 31,2020 Relationship between Dislocation Densityand Hydrogen#0183;Low dislocation density and low-resistance GaN wafers are in high demand for improving the performance of vertical GaN power devices.Recently,GaN wafers with the dislocation density of 8.8 Relationship between Dislocation Densityand Hydrogen#215; 104 cm 2 and the resistivity of 7.8 Relationship between Dislocation Densityand Hydrogen#215; 10 4 cm,were fabricated using oxide vapor phase epitaxy (OVPE).

Experimental Study on the Relationship between Dislocation

In this paper,the relationship between dislocation density and internal stress under ultrasonic was studied.The results show that the ultrasonic can make the dislocation density increase and the compressive stress decrease.When the ultrasonic power is 200W,the dislocation density and the compressive stress culminate 3.8 Relationship between Dislocation Densityand Hydrogen#215;10-15m-2 and-144 Experimental Study on the Relationship between Dislocation In this paper,the relationship between dislocation density and internal stress under ultrasonic was studied.The results show that the ultrasonic can make the dislocation density increase and the compressive stress decrease.When the ultrasonic power is 200W,the dislocation density and the compressive stress culminate 3.8 Relationship between Dislocation Densityand Hydrogen#215;10-15m-2 and-144 Electrolytic Hydrogen Evolution Kinetics and Its Relation A significant correlation between the logarithm of the exchange current density i 0 of the electrolytic hydrogen evolution reaction and the electronic work function is found for one group of metals.Another group of metals probably having a different relationship is distinguished.The relationship between logi 0 and is explained as arising from the dependence of heat of adsorption upon .

Effects of grain size on the dislocation density and flow

This relationship between dislocation density and grain size may be derived in the following manner Starting with the general equation e = ~lpbs (19) where e is the tensile strain,a~ an orientation factor,p the density of dislocations and s the average dis- tance moved,it appears reasonable to assume as a first approximation that s is Critical assessment of hydrogen effects on the slip In particular,we study the effect of hydrogen on the interactions between the screw dislocation and eight 111 symmetric tilt grain boundaries (STGBs).Note that at low temperatures,the yield behaviour of -Fe is strongly governed by the glissile a/2111 screw dislocation.Further,the observed outcomes for slip transmission were Critical assessment of hydrogen effects on the slip In particular,we study the effect of hydrogen on the interactions between the screw dislocation and eight 111 symmetric tilt grain boundaries (STGBs).Note that at low temperatures,the yield behaviour of -Fe is strongly governed by the glissile a/2111 screw dislocation.Further,the observed outcomes for slip transmission were

Cited by 3Publish Year 2016Author Liang Zhao,Zuoxing Guo,Qiulin Wei,Guoqing Miao,Lei ZhaoThe relationship between the dislocations and

Oct 11,2016 Relationship between Dislocation Densityand Hydrogen#0183;In this work,we propose a formation mechanism to explain the relationship between the surface morphology (and microstructure) and dislocations in theCited by 3Publish Year 2016Author Liang Zhao,Zuoxing Guo,Qiulin Wei,Guoqing Miao,Lei ZhaoRelationship between Dislocation Density and Antibacterial Relationship between Dislocation Density and Antibacterial Activity of Cryo-Rolled and Cold-Rolled Copper by Vinod Parmar 1,2 ,Kandarp Changela 3 ,B.Srinivas 4 ,Manimuthu Mani Sankar 5 ,Sujata Mohanty 5 ,S.K.Panigrahi 4 ,K.Hariharan 4 and Dinesh Kalyanasundaram 1,6,*Cited by 17Publish Year 2011Author Shinya Taketomi,Ryosuke Matsumoto,Noriyuki MiyazakiHydrogen embrittlement through the formation of lowHydrogen embrittlement is shown to proceed through a previously unidentified mechanism.Upon ingress to the microstructure,hydrogen promotes the formation of low-energy dislocation nanostructures.These are characterized by cell patterns whose misorientation increases with strain,which concomitantly attracts further hydrogen up to a critical amount inducing failure.

CHAPTER 7 DISLOCATIONS AND STRENGTHENING

Of dislocation break and restore to allow the dislocation to move Introduction of the dislocation into a crystal ,its migration (slip) through its volume and expulsion at the crystal surface lead to material plastic deformation The lower half of the crystal slips by a distance bAtomistic study of the competitive relationship between May 24,2011 Relationship between Dislocation Densityand Hydrogen#0183;In this study,we investigated the occurrence of interactions between a {112} Relationship between Dislocation Densityand Hydrogenlt;111 Relationship between Dislocation Densityand Hydrogengt; edge dislocation and a hydrogen atom via the estimation of the stress-dependent energy barriers for the dislocation motion and hydrogen diffusion in alpha iron using atomistic calculations.(PDF) Relationship between Dislocation DensityandThe relationship between hydrogen traps and dislocation density is discussed..Parameters related with the hydrogen permeation coefficient in the API 5L X60 steel in the different metallurgical

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