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Observations of crystalline structures occurring in the tape obtained with the melt-spinning method from the alloy with elastic memory Ti50Ni25Cu25 具有弹性记忆的Ti50Ni25Cu25合金，熔体纺丝法获得带中晶体结构的观察
Nanodesign, Technology, and Computer Simulations Pub Date : 2006-02-23 DOI: 10.1117/12.726772
T. Breczko, J. Szczepanek
{"title":"Observations of crystalline structures occurring in the tape obtained with the melt-spinning method from the alloy with elastic memory Ti50Ni25Cu25","authors":"T. Breczko, J. Szczepanek","doi":"10.1117/12.726772","DOIUrl":"https://doi.org/10.1117/12.726772","url":null,"abstract":"In the article the results of diffractometric, calorimetric research as well as the chemical constitution have been presented. The research was carried out on the samples made of a thin amorphous tape made with the melt-spinning method from the alloy revealing the memory Ti50Ni25Cu25 effect. The samples were subjected to annealing at different parameters of holding in temperature. After the heat treatment, the response of martensite transformation and formed crystal structures has been observed. The X-ray microstructural tests showed forming so-called outer (top) \"free\" layer of lamellar precipitation of the high level of coherence.","PeriodicalId":117315,"journal":{"name":"Nanodesign, Technology, and Computer Simulations","volume":"154 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133198934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Torsion of single-wall carbon nanotubes: molecular dynamics study 单壁碳纳米管的扭转:分子动力学研究
Nanodesign, Technology, and Computer Simulations Pub Date : 2006-02-23 DOI: 10.1117/12.726715
A. Melker, Kirill I. Zhaldybin
{"title":"Torsion of single-wall carbon nanotubes: molecular dynamics study","authors":"A. Melker, Kirill I. Zhaldybin","doi":"10.1117/12.726715","DOIUrl":"https://doi.org/10.1117/12.726715","url":null,"abstract":"In this contribution, we report on a study of fracture under torsion of single wall achiral carbon nanotubes. We have used a 'bond-charge' molecular dynamics model taking into account both the electronic and atomic degrees of freedom. We observed structure changes of single wall carbon nanotubes under torsion and calculated also stress-strain diagrams in the temperature range of 100 to 1200 K.","PeriodicalId":117315,"journal":{"name":"Nanodesign, Technology, and Computer Simulations","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133500037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the measurement of recovery strains of thermo-mechanically cycled Ni-Ti memory alloy 热机械循环镍钛记忆合金恢复应变的测定
Nanodesign, Technology, and Computer Simulations Pub Date : 2006-02-23 DOI: 10.1117/12.726766
K. Kuś, Piotr Chwiedziewicz
{"title":"On the measurement of recovery strains of thermo-mechanically cycled Ni-Ti memory alloy","authors":"K. Kuś, Piotr Chwiedziewicz","doi":"10.1117/12.726766","DOIUrl":"https://doi.org/10.1117/12.726766","url":null,"abstract":"This paper includes an experimental study of strains variation (recovery and permanent strains) in a Ni-Ti alloy due to thermo-mechanical cycling. The shape memory effect (SME) was evaluated in strip-shaped specimens using a special bending apparatus and discussed with respect to different thermo-mechanical loading paths. The definite transformation temperatures of the studied alloy were achieved by applying several heat-treatments at various temperatures and for different times, and observing the phase transformation behaviour using DSC analysis. To identify the phases present after annealing the specimens were subjected to XRD measurements. It was found that the nature of transformation cycle during the two applied thermo-mechanical loading paths (especially a stress during reverse transformation) and the changes developed in microstructure of the cycled material can both affect the strains behaviour.","PeriodicalId":117315,"journal":{"name":"Nanodesign, Technology, and Computer Simulations","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114411720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Nondestructive method for determining the service life of polymer insulation 测定聚合物绝缘材料使用寿命的无损方法
Nanodesign, Technology, and Computer Simulations Pub Date : 2006-02-23 DOI: 10.1117/12.726759
E. Kostenko
{"title":"Nondestructive method for determining the service life of polymer insulation","authors":"E. Kostenko","doi":"10.1117/12.726759","DOIUrl":"https://doi.org/10.1117/12.726759","url":null,"abstract":"The main reason of failure for electric cables with polyethylene insulation which are in service under mechanical load at high temperatures is cracking of shells and insulation. Resistance to cracking is governed by cold resistance. The latter is defmed as the temperature at which cable bending leads to an integrity loss of a shell or insulation. In its turn, cold resistance correlates with a permolecular structure of polyethylene. In this contribution, a nondestructive method for estimating the service life of electrical cables with polymer insulation is considered. The method is based on using the above mentioned correlations.","PeriodicalId":117315,"journal":{"name":"Nanodesign, Technology, and Computer Simulations","volume":"2 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121005064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Molecular dynamics study of α↔γ transformations in Fe-Ni nanoparticles 铁镍纳米颗粒中α↔γ转化的分子动力学研究
Nanodesign, Technology, and Computer Simulations Pub Date : 2006-02-23 DOI: 10.1117/12.726720
L. Karkina, I. Karkin
{"title":"Molecular dynamics study of α↔γ transformations in Fe-Ni nanoparticles","authors":"L. Karkina, I. Karkin","doi":"10.1117/12.726720","DOIUrl":"https://doi.org/10.1117/12.726720","url":null,"abstract":"Size effect in Fe - Ni alloy nanoclusters has been studied by the molecular-dynamics method using N -body interatomic interaction potentials. It has been found that in Fe-Ni clusters with sizes d<1.5 nm, the α→γ transformation does not occur. During heating the initial bcc configuration turns into an icosahedral through polytetrahedral or amorphous- like configuration.","PeriodicalId":117315,"journal":{"name":"Nanodesign, Technology, and Computer Simulations","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126457006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mutual reaction between interstitial clusters in bcc Fe bcc Fe间质团簇之间的相互反应
Nanodesign, Technology, and Computer Simulations Pub Date : 2006-02-23 DOI: 10.1117/12.726716
D. Terentyev, L. Malerba
{"title":"Mutual reaction between interstitial clusters in bcc Fe","authors":"D. Terentyev, L. Malerba","doi":"10.1117/12.726716","DOIUrl":"https://doi.org/10.1117/12.726716","url":null,"abstract":"Clusters of self-interstitial atoms (SIAs) are commonly observed in microstructure of irradiated metals. These clusters can be formed directly in high-energy displacement cascades or as a result of interaction between individual SIAs. The majority of these clusters has features of glissile dislocation loops and perform fast thermally-activated one-dimensional glide. In this paper we present results of systematic molecular dynamics study of reactions where glissile clusters are involved. On the example of bcc iron we demonstrate that the reactions can result in a number of specific microstructural objects with different properties which may affect the microstructure evolution of irradiated metals. Particularly the reactions between the most common glissile clusters of (111) crowdions can result in coarsening, formation of immobile complexes and change of the crowdion orientation to (100) -type direction. However, particular mechanism responsible for that was found to be different from the one reported in the similar computer simulation studies. Properties of the products of mutual reactions between clusters are quite different which can influence the total microstructure evolution under irradiation. The results are obtained with the most promising interatomic potential for iron.","PeriodicalId":117315,"journal":{"name":"Nanodesign, Technology, and Computer Simulations","volume":"6597 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128839340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Plastic deformation at the top of a stopped crack 止裂顶部的塑性变形
Nanodesign, Technology, and Computer Simulations Pub Date : 2006-02-23 DOI: 10.1117/12.726780
Y. I. Tyalin, V. A. Tyalina, D. Zolotova, A. Butyagin
{"title":"Plastic deformation at the top of a stopped crack","authors":"Y. I. Tyalin, V. A. Tyalina, D. Zolotova, A. Butyagin","doi":"10.1117/12.726780","DOIUrl":"https://doi.org/10.1117/12.726780","url":null,"abstract":"The plastic zone was represented by a line or a set of lines of sliding to planes, disposed to the plane of the crack under angle of π/4. Two stages of formation dislocation structure at the top of the crack were studied. Firstly, the formation of sliding lines at the top of a stopped crack was studied, when the crystal was loaded. Second, their evolution was investigated after the loading had been taken away. On second stage, the part of dislocations leaves on the plane of a crack under action of forces of mutual pushing and the image, the part of convertible plasticity can reach half from the total number of dislocations.","PeriodicalId":117315,"journal":{"name":"Nanodesign, Technology, and Computer Simulations","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129599291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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