{"title":"Interpretation of Preferred Orientation in Naturally andExperimentally Deformed Chalcopyrite Ores by Neutron DiffractionTexture Analysis","authors":"E. Jansen, P. Merz, H. Siemes, G. Will","doi":"10.1155/TSM.14-18.431","DOIUrl":"https://doi.org/10.1155/TSM.14-18.431","url":null,"abstract":"","PeriodicalId":129427,"journal":{"name":"Textures and Microstructures","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126542406","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}
G. Bokuchava, N. Shamsutdinov, J. Schreiber, M. Stalder
{"title":"Determination of Residual Stresses in WCu Gradient Materials","authors":"G. Bokuchava, N. Shamsutdinov, J. Schreiber, M. Stalder","doi":"10.1155/TSM.33.207","DOIUrl":"https://doi.org/10.1155/TSM.33.207","url":null,"abstract":"Residual stress measurements were carried out on copper–tungsten gradient materials by \u0000means of neutron diffraction on the High Resolution Fourier Diffractometer on IBR-2, \u0000JINR, Dubna. The samples so far investigated had a concentration profile that approximates \u0000the gradient by step functions. The results show an averaged positive stress (stretch) \u0000in the copper phase and negative (compression) in the tungsten phase. A comparison to \u0000analytical linear elastic calculations shows that the measured values are nearly an order of \u0000magnitude too low, whereas however, a qualitative agreement of the stress distribution \u0000exists. That this quantitative discrepancy can be attributed to the model's simplifying \u0000assumption of pure elastic behaviour can be shown by recent calculations that also include \u0000plasticity and show a much better agreement with the experimental values. Single peak \u0000evaluation also strongly suggests that plasticity does indeed play a significant role.","PeriodicalId":129427,"journal":{"name":"Textures and Microstructures","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121968242","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}
{"title":"A Composite Sample Method for Determination of Global TextureWithout Sample Symmetry","authors":"Xiang Zhao, L. Zuo, Z. Liang, H. Zhao","doi":"10.1155/TSM.19.63","DOIUrl":"https://doi.org/10.1155/TSM.19.63","url":null,"abstract":"A new flexible composite sample method is described, which permits the global texture of a sheet \u0000material to be determined from one single composite sample. Its applicability is demonstrated by a \u0000practical example.","PeriodicalId":129427,"journal":{"name":"Textures and Microstructures","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127618050","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}
{"title":"Pole Figure Inversion Using Finite Elements Over Rodrigues Space","authors":"N. Barton, D. Boyce, P. Dawson","doi":"10.1080/073033002100000182","DOIUrl":"https://doi.org/10.1080/073033002100000182","url":null,"abstract":"Using finite elements over Rodrigues space, methods are developed for the formation and inversion of pole figures. The methods take advantage of the properties of Rodrigues space, particularly the fact that geodesics corresponding to pole figure projection paths are straight lines. Both discrete and continuous pole figure data may be inverted to obtain orientation distribution functions (ODFs) in Rodrigues space, and we include sample applications for both types of data.","PeriodicalId":129427,"journal":{"name":"Textures and Microstructures","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131007538","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}
V. Jung, M. Adam, H. Bornemann, H. Brokmeier, A. Kaiser, R. Schnieber, J. Thoms
{"title":"TEXTURE AND MAGNETIC LEVITATION FORCE OF MELT-TEXTURED YBaCuO CYLINDERS","authors":"V. Jung, M. Adam, H. Bornemann, H. Brokmeier, A. Kaiser, R. Schnieber, J. Thoms","doi":"10.1155/TSM.33.93","DOIUrl":"https://doi.org/10.1155/TSM.33.93","url":null,"abstract":"To investigate the correlation between the levitation force of YBaCuO cylinders when approached by a permanent magnet and the texture of these YBaCuO cylinders some of these specimens were selected which are free of microcracks, have the same oxygen load, show no isotropic fraction or other undesired parasitic c-axis orientations. To gain a maximum levitation force the c-axis orientation of the crystalline domains has to have a small divergence between the c-axis and the cylinder axis. By measurements of the (002) pole figures by neutron diffraction with a mesh width no more than 6° undesired c-axis orientations have been analyzed. The distribution of the c-axis near the cylinder axis has been measured at the (005) reflection of 7 times higher intensity than the (002) reflection. The angular limit within which lie 94% of all c-axis orientations is a practical value for comparison of the c-axis orientations and the levitation forces of the different YBaCuO cylinders.","PeriodicalId":129427,"journal":{"name":"Textures and Microstructures","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132952077","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}
{"title":"EFFECT OF MICROSTRUCTURES ON DEFORMATION BEHAVIOUR OF ALUMINIUM MATRIX COMPOSITES IN LASER BENDING","authors":"K. Chan, J. Liang","doi":"10.1155/TSM.34.43","DOIUrl":"https://doi.org/10.1155/TSM.34.43","url":null,"abstract":"It is well known that the mechanical and deformation properties of metal matrix composites (MMCs) are related to their microstructures. However, less work has been carried out in laser bending to examine the dependency of microstructures ofMMCs on deformation behaviour. In this paper, two aluminium-based metal matrix composites, A12009/ 20vol% SiCwand A12009/20vol% SiCpwere investigated.AYAG laserwas used to scan the composites both parallel and perpendicular to their rolling directions. Itwas reported that under the same processing conditions, a larger bending angle was obtained for the AI2009/SiCp composite. No significant change in microstructures was observed for both composites after bending. Experimental findings also revealed that for the particulate reinforced composite, a larger laser bending angle was obtained when the laser scanning directionwas perpendicular to the rolling direction, whereasno significant difference was observed for the A12009/SiCw composite. These phenomena were shown to relate to the shape anddistribution ofreinforcements.","PeriodicalId":129427,"journal":{"name":"Textures and Microstructures","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132276378","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}
Liquan Chen, Liquan Chen, Yong Lu, Yong Lu, Chun‐Sing Lee, J. Bi, R. Li
{"title":"Mechanical Properties and Textures of ParticulatereinforcedAluminum Alloy Matrix Composite Under Hot- and Cold-RollingConditions","authors":"Liquan Chen, Liquan Chen, Yong Lu, Yong Lu, Chun‐Sing Lee, J. Bi, R. Li","doi":"10.1155/TSM.31.43","DOIUrl":"https://doi.org/10.1155/TSM.31.43","url":null,"abstract":"A study has been made on the mechanical properties of an aluminum \u0000alloy matrix (Al–3.0wt% Cu–1.5 wt% Mg–0.4wt% \u0000Mn)composites reinforced with a volume fraction of \u000015% silicon carbide under hot- and cold-rolling conditions. The preferred crystallite \u0000orientation distribution functions (ODFs) of these rolled \u0000sheets were measured. The tensile test results showed that the \u0000ultimate tensile strength and plasticity of the hot-rolled \u0000composite sheet are better than those of the cold-rolled one. \u0000However, the cold-rolled sheet specimen exhibits much higher \u00000.2% offset yield strength than that in the case of hot \u0000rolling. The cold-rolling texture of this sheet composite is \u0000obtained from the development of hot-rolled texture only by a \u0000little rotation about the related axes. It consists of random \u0000texture and three weak components, {001}〈110〉, {110}〈112〉 \u0000 and {3314}〈773〉, while the hot rolling texture of the metal-matrix \u0000composite (MMC) sheet is almost random under the rolling reduction \u0000employed. The preferred grain orientation has effect on the yield \u0000strength and no much influence on the ultimate tensile strength of \u0000the cold rolled sheet. The decrease in the ultimate tensile \u0000strength of the cold-rolled specimen is mainly attributed to the \u0000micro-damages in the microstructure produced during cold rolling.","PeriodicalId":129427,"journal":{"name":"Textures and Microstructures","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127872493","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}
{"title":"Modelling the effect of plastic anisotropy on springback of integrated circuit leadframes","authors":"K. Chan, S. Wang","doi":"10.1155/TSM.31.85","DOIUrl":"https://doi.org/10.1155/TSM.31.85","url":null,"abstract":"Recently, some published experimental results have revealed that \u0000springback of some common types of integrated circuit (IC) leadframes in roller forming is highly related to their anisotropic \u0000properties. In this paper, a new plane stress bending model based \u0000on the approach of Crystallographic Mechanics of Textured \u0000Polycrystals (CMTP) has been developed to predict the deformation \u0000behaviour and springback of a copper alloy. Based on the texture \u0000data obtained from the measured orientation distribution function, \u0000springback of the copper alloy in the rolling direction was \u0000determined to be greater than that perpendicular to the rolling \u0000direction. It was also found that the springback increased with \u0000increasing die radius. The predictions were compared to the \u0000experimental findings, and the trends of them were in reasonable \u0000agreement.","PeriodicalId":129427,"journal":{"name":"Textures and Microstructures","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123905521","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}
W. Skrotzki, B. Klöden, R. Tamm, C. Oertel, U. Garbe, E. Rybacki
{"title":"Torsion texture measurements with high-energy synchrotron radiation on NiAl","authors":"W. Skrotzki, B. Klöden, R. Tamm, C. Oertel, U. Garbe, E. Rybacki","doi":"10.1080/07303300310001628733","DOIUrl":"https://doi.org/10.1080/07303300310001628733","url":null,"abstract":"Diffraction with high-energy synchrotron radiation is a new experimental method to determine textures of \u0000materials, which due to the special properties of this radiation, in the future may have advantages in terms \u0000of accuracy of local texture measurements in comparison to established methods like Electron back scatter \u0000diffraction (EBSD). In the present study NiAl polycrystals with two different initial textures have been \u0000deformed in torsion at 727°C and 1000°C and their texture development has been measured with highenergy \u0000synchrotron radiation. Torsion enables the study of texture formation with strain as well as the \u0000exploration of large strains without changing the shape of the samples. The pole figures indicate the preferred \u0000alignment of ‹100› with the shear direction and {110} with the shear plane. High pressure torsion may also \u0000open new possibilities in terms of grain refinement and texture formation and thus ductilization of NiAl.","PeriodicalId":129427,"journal":{"name":"Textures and Microstructures","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124210125","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}
{"title":"NEUTRON, X-RAY, AND FINITE-ELEMENT STRESS ANALYSIS ON BRAZED COMPONENTS OF STEEL AND CEMENTED CARBIDE","authors":"L. Pintschovius, Berthold Schreieck, B. Eigenmann","doi":"10.1155/TSM.33.263","DOIUrl":"https://doi.org/10.1155/TSM.33.263","url":null,"abstract":"Plates of cemented carbide were joined to steel by brazing. The structure was designed in imitation of a rock drill. Two types of steel were used which, after cooling from brazing temperature, showed a normalized ferritic–perlitic or a martensitic material state, respectively. Copper foil containing a nickel mesh was used as braze material. The residual stresses resulting from the different thermal shrinkage and elastic–plastic behavior of the materials as well as from the different phase transformation behavior of the steels during cooling of the samples from the brazing temperature (1100℃) to room temperature were investigated by neutron diffraction with special attention to the regions near the interface between steel and cemented carbide. Additional measurements were performed by X-ray diffraction on selected surface areas. Most of the experimental results could be satisfactorily modelled by three-dimensional finite-element calculations employing the temperature dependent elastic–plastic behavior of the materials. In particular, characteristic differences between the residual stress states of components with ferritic–perlitic or martensitic steel bodies were found experimentally as well as by the model calculations. Some points are discussed which require further investigations.","PeriodicalId":129427,"journal":{"name":"Textures and Microstructures","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124392610","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}