Development of rolling textures and texture inhomogeneities of single- and poly-crystalline copper

Pośpiech, J.; Lücke, K.

doi:10.1016/0001-6160(78)90081-0

Cited by 9 publications

(4 citation statements)

References 14 publications

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“…A close observation of the texture development for the three alloys as a function of cold rolling deformation indicates that all the three deformation texture components, viz., Cu, Bs and S become stronger with an increase in cold reduction. Amongst the deformation texture components, the Bs and S components emerge stronger in comparison with the Cu component with an increase in the cold rolling reduction [1][2][3]. Cu component is observed to be weak in AA7075 alloy and relatively stronger in AFNOR7020 alloy samples.…”

Section: Experimental Materials and Proceduresmentioning

confidence: 87%

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Evolution of Crystallographic Texture in Cold Rolled Al-Zn-Mg Alloys Used in Space Applications

Narayanan

Suwas

Sreekumar

et al. 2011

MSF

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The aerospace industry uses a variety of materials in different forms like sheets, forgings, extruded rods, welded components and machined components for launch vehicle and satellite applications. As lighter and stronger materials are the aims of the aerospace industry, aluminium alloys are the most widely used materials in the in the aircraft and aerospace industries. These aluminum alloys used in the aerospace industry are subjected to a variety of processing operations, either in the sheet form after rolling, forging, heat treatment and machining conditions, to realize the final product implies that these alloys exhibit a wide range of properties depending on the processing conditions. Texture formation in a material takes place during its various processing stages. The actual orientation distribution in a poly crystal is the result of the manufacturing processes applied. In this context, it is important to characterize the evolution of texture, both macro and micro texture, in AA7075 and AFNOR7020 alloys, which are two of the important high strength aluminum alloys used in the Aerospace industry. This paper deals with the results of the crystallographic texture measurements carried out on the cold rolled and artificially aged AA7075 and AFNOR7020 aluminium alloys. Results obtained from the pole figure analysis, Orientation Distribution Function (ODF) method and estimation of the various fibres present in the cold rolled material and the volume fraction of the texture components are discussed in detail for the alloy. Results of the micro texture measurements using the EBSD are presented, explained and analyzed in detail. A comparison of the inverse pole figures (IPFs), Image Quality (IQ) maps, Misorientation angle, Grain Orientation Spread (GOS), Kernal Average Misorientation (KAM), CSL boundaries, Grain size and Grain boundary character distribution (GBCD) for materials cold rolled to different reduction for the alloy are done and analyzed. Conclusions are drawn regarding the evolution of texture from the above analysis. Deformation texture components Cu, Bs and S increase from the starting material as the rolling percentage increases. On the other hand, recrystallization texture components of Goss and Cube are observed to be weak. AFNOR7020 Alloy developed a stronger texture compared to the AA7075 alloy. S component of texture is stronger in AA7075 alloy whereas the Bs component is stronger in AFNOR7020 alloy. This is attributed to the shear banding which was found absent in the other alloy.

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Section: Experimental Materials and Proceduresmentioning

confidence: 87%

“…Each of these processing methods and routes leads to characteristic evolution of texture and microstructure. It is, therefore, important to characterize the texture at macro-and micro-level [1][2][3][4][5][6][7][8][9][10].…”

mentioning

confidence: 99%

Evolution of Crystallographic Texture in Cold Rolled Al-Zn-Mg Alloys Used in Space Applications

Narayanan

Suwas

Sreekumar

et al. 2011

MSF

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“…One promising way to better understand the underlying orientation changes of the crystallites is to follow the texture formation during rolling by means of three dimensional ODF instead of pole figures mostly used till now. Since the later ones give only incomplete information about the true orientation distribution, only the use of ODF's allows the observation of many details possibly important for the interpretation of texture formation [5]. By means of quantitative ODF analysis this texture transition through thickness, some great and useful facts have been revealed, so the texture of material during deformation and post-heat treatment has been studied in three different plans; surface, one-quarter and center plane.…”

Section: B Textural Evolution In Processingmentioning

confidence: 99%

“…However, this is rarely true in practice, and through-thickness variations are commonly found [5]. The two most important parameters are the rolling geometry and the friction.…”

mentioning

confidence: 99%

Texture Inhomogeneities Through Thickness by Hot Rolling With Different Heat Treatment Processes of Api 5l X70

Masoumi

Abreu

2015

Proceedings of the International Symposium on Crystallography

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Abstract-In this work the influence of different thermomechanical paths and heat treatments on crystallographic texture through thickness of API 5L X70 pipeline steel has been studied by using X-ray diffraction, electron backscattered diffraction (EBSD) and scanning electron microscope (SEM). The samples were hot rolled at 1000 °C to 44% and 67% reduction in thickness and then heat treatment processes such as annealing, water quenching and quench-tempering were done to evaluate microstructure and crystallographic texture changing through thickness. Banded ferrite-pearlite microstructure has shown in as received material, was changed to acicular ferrite, quasipolygonal ferrite, granular bainite, martensite and retained austenite during different heat treated processes. In rolling, inhomogeneity of texture has often been observed due to friction between rolls and material, in this manner, rolling schedules induced crystallographic texture dominated by the {112}//ND, {111}//ND, and {011}//ND fibers, which {110}//ND fiber was formed mainly through surface plan but {112}, {111}//ND and {001} <110> texture component were developed in mid plan of samples. As a result, better understanding of these processes is the key to improving and optimizing the structures of both current and future pipeline steels.Idex Terms-Thermomechanical path; Crystallographic texture; Shear deformation I. INTRODUCTION ince pipeline steels are extensively used for transportation of oil and natural gas for long distances, the demand for them has been increased considerably in recent years [1]. Mechanical properties of steels have been improved through control microstructure and hardness, reduction in inclusion morphology, and use of low segregated uniform microstructures [2]. In this study control of crystallographic texture through thickness has been proposed as a means to improve mechanical properties.Asbeck and Mecking [3] showed that the texture inhomogeneity results from inhomogeneous shear deformation occurring during rolling, whereas the surface texture is caused by the surface roughness of the rolls. This shear strain has the value zero in the center plane of the sheet and reaches a maximum value either at the surface or possibly also in an intermediate layer, depending on the geometrical conditions. High value of hardness at surface is resulted by work hardening caused by resultant shear strain due to friction between rolls and sheet. It is found that large amount of additional shear strain is applied to surface of cold rolled sheet due to friction between rollers and sheet surface when rolling is carried out without lubrication [4]. Remaining shear stress caused textural and micro structural inhomogeneity along thickness direction.Most analyses of the textures developed on rolling, assume that plane strain conditions apply and that the texture develops uniformly through the thickness of the material. However, this is rarely true in practice, and through-thickness variations are commonly found [5]. The two most important parameters are...

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Crystal orientation spaces and remarks on the modelling of polycrystal anisotropy

Dłużewski

1991

Journal of the Mechanics and Physics of Solids

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Development of rolling textures and texture inhomogeneities of single- and poly-crystalline copper

Cited by 9 publications

References 14 publications

Evolution of Crystallographic Texture in Cold Rolled Al-Zn-Mg Alloys Used in Space Applications

Evolution of Crystallographic Texture in Cold Rolled Al-Zn-Mg Alloys Used in Space Applications

Texture Inhomogeneities Through Thickness by Hot Rolling With Different Heat Treatment Processes of Api 5l X70

Crystal orientation spaces and remarks on the modelling of polycrystal anisotropy

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