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Friday, July 31, 2020 | History

2 edition of Structure and mechanical properties of polycrystalline iron-silicon alloys. found in the catalog.

Structure and mechanical properties of polycrystalline iron-silicon alloys.

Lennart GraМЉnaМ€s

Structure and mechanical properties of polycrystalline iron-silicon alloys.

by Lennart GraМЉnaМ€s

  • 228 Want to read
  • 20 Currently reading

Published in Uppsala .
Written in English

    Subjects:
  • Iron-silicon alloys.

  • Edition Notes

    SeriesActa Universitatis Upsaliensis, Abstracts of Uppsala dissertations from the Faculty of Science, 199, Abstracts of Uppsala dissertations from the Faculty of Science,, 199.
    Classifications
    LC ClassificationsTA479.S5 G66
    The Physical Object
    Pagination11 p.
    Number of Pages11
    ID Numbers
    Open LibraryOL5339674M
    LC Control Number72193332

    @article{osti_, title = {Ductility and fracture behavior of polycrystalline Ni/sub 3/Al alloys}, author = {Liu, C.T.}, abstractNote = {This paper provides a comprehensive review of the recent work on tensile ductility and fracture behavior of Ni/sub 3/Al alloys tested at ambient and elevated temperatures. Polycrystalline Ni/sub 3/Al is intrinsically brittle along grain boundaries, and. The volume draws on the knowledge and insight of more than experts with experience in materials-centric product design, manufacturing, and quality control. It contains more than 1, illustrations (photographs, charts, and graphs) and over tables filled with alloy designation, composition, and mechanical and physical property data.

    Mechanical properties of polycrystalline intermetallics strongly depend on their type of grain boundaries. An interesting example of the structure and properties being affected by grain boundaries is related to TiAl. By processing TiAl in certain special modes, it is possible to obtain structural states with practically the same grain size, but. The elastic behavior of ice is characterized by moderate anisotropy. At temperatures near the melting point, Young's modulus 23 of single crystals varies by less than 30%, from 12 GPa along the least compliant direction (parallel to the c-axis) to GPa along the most compliant direction (inclined to both the c- and a-axes). Along directions within the basal plane Young's modulus is 10 GPa.

      The studied elastic constants and polycrystalline elastic moduli describe the mechanical properties in the small deformation region, and allow conclusions on extrinsic ductility/brittleness. The ideal tensile strength (ITS) displays the mechanical behavior for large elongations of ideal defect-free crystals where stress-strain relations are. In view of the existence of books dealing with the technology and properties of iron alloys it was decided that the present book should be concerned only with the structures, and not with the properties of the alloys. In connection with steels it was thought best, in the space available, to deal only with those based on iron-carbon alloys.


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Structure and mechanical properties of polycrystalline iron-silicon alloys by Lennart GraМЉnaМ€s Download PDF EPUB FB2

The polycrystalline elastic modulus and anisotropy are computed and discussed using simple arithmetical averaging method. • The ideal tensile tests are performed for the mechanical stable AlNiCuCo HEA solid solution.

• The effects of crystal structure and high pressure on thermal properties. Iron-silicon alloys 15 works Search for books with subject Iron-silicon alloys. Search. Non-oriented electrical steel sheets United States Steel Corporatio Not in Library.

Structure and mechanical properties of polycrystalline iron-silicon al Lennart Grånäs. Bulk UFG Mg alloys have been successfully fabricated by various kinds of severe plastic deformation methods, such as multi-axial forging process and alternate biaxial reverse corrugation process, and significantly enhanced mechanical properties were realized [14, 16].

However, the ultra-grain refinement of recrystallized pure Mg down to sub Author: Ruixiao Zheng, Ruixiao Zheng, Jun-Ping Du, Jun-Ping Du, Si Gao, Hidetoshi Somekawa, Shigenobu Ogata. Structure and mechanical properties of polycrystalline iron-silicon alloys Grånäs, Lennart Uppsala University, Disciplinary Domain of Science and Technology.

The mechanical properties of a metal are those properties which completely define its behavior under the action of external loads or forces. Or, in other words, mechanical properties are those properties which are associated with its ability to resist failure and other behavior under the action of external forces.

Explain why the mechanical properties of bcc metals and alloys differ from those with close packed structures. Explain the effects of work hardening and annealing on structure and mechanical properties.

Explain the mechanical properties of steel in terms of its phase behavior. Understand the structure and mechanical properties of amorphous metals.

Dear Colleagues, Mechanical properties of polycrystalline structural materials, such as metals, alloys and intermetallic compounds, are significantly affected by their microstructures, including phase composition, grain shape and size, grain boundary distribution, dislocation density, dispersed particles and solutes, internal stresses, etc.

The metalloid is rarely found in pure crystal form and is usually produced from the iron-silicon alloy ferrosilicon. Silica (or silicon dioxide), as sand, is a principal ingredient of glass, one of the most inexpensive of materials with excellent mechanical, optical, thermal, and electrical properties.

A nanocrystalline (NC) material is a polycrystalline material with a crystallite size of only a few materials fill the gap between amorphous materials without any long range order and conventional coarse-grained materials.

Definitions vary, but nanocrystalline material is commonly defined as a crystallite (grain) size below nm. Grain sizes from – nm are typically.

Abstract: In order to investigate the reliability of the mechanical properties of mono-crystalline silicon thin films (thickness of 5 mum), a uniaxial tensile test and a nanoindentation test were conducted, respectively, on samples of identical composition and under identical conditions.

The tensile samples were mum long, 50 mun wide, and microfabricated on the silicon-on-insulation (SOI.

The crystal structure and mechanical properties of polycrystalline ZnS produced by the CVD–HIP process are investigated. The effect of isostatic pressing on the structural perfection of ZnS is examined.

CVD–HIP ZnS is shown to have improved elastic properties owing to a reduced effective free volume and structural relaxation. Moreover, at high P–T conditions relevant to the core, Fe–Si alloy is stable in hexagonal close-packed (hcp) structure as Si is readily dissolved in Fe, and its physical properties, e.g.

Figure 3. γ΄΄ D structure. Ni atoms are blue and Nb, Al and Ti purple. Carbides are traditionally classified by their chemical composition, mainly MC, M 6 C and M 23 C 6, where M stands for metal elements such as Ti, Cr, Nb, Mo, Hf and Ta [].

MC carbides are usually coarse (Fig. 6), having a fcc densely packed structure [].Ti, Nb, Hf and Ta are the main metal elements.

TEM images revealed a high density of dislocations inside the grains. Since the printed compound has a high degree of texture, the TE and mechanical properties exhibit a highly anisotropic behavior.

The maximum ZT of annealed samples parallel to the BD wassimilar to that of the single crystal. However, the compressive strength of the. Polycrystalline structure of electrical steel after coating has been removed.

Electrical steel (lamination steel, silicon electrical steel, silicon steel, relay steel, transformer steel) is an iron alloy tailored to produce specific magnetic properties: small hysteresis area resulting in low power loss per cycle, low core loss, and high. properties of ductility and toughness has been ongoing not only for magnesium but also for other metallic materials.

In this review, we outline the impact/role of the alloying element on the properties of toughness and ductility, focusing on the polycrystalline binary magnesium alloys reported in various recent papers.

The Microstructure of Titanium Alloys. Property Profiles of the Titanium Alloy Classes. The Alloying Elements of Titanium. The Conventional Titanium Alloys α Alloys. Near‐α Alloys. α+β Alloys. Metastable β Alloys. Textures in Titanium Alloys. Mechanical Properties of Titanium Alloys Strength.

Stiffness. Polycrystalline or multicrystalline materials, or polycrystals are solids that are composed of many crystallites of varying size and orientation.

Crystallites are also referred to as grains. They are small or even microscopic crystals and form dur. The mechanical properties of grapheme shown in this early experimental work [15, 16] are very different from recent experimental results reported by Lee et al who found that polycrystalline graphene sheets with grain sizes of 1–5 μm had an elastic modulus of around GPa and a tensile strength of around GPa.

As the carbon content increases, the melting point (as compared to steels) is lowered to between ° to °C, and thus, carbon acts as a graphitiser.

But, more the graphite formed, lower are the mechanical properties. (b) Silicon (%): Silicon mainly controls the form of carbon present in the cast iron. Silicon is a strong graphitiser.

The mechanical properties (maximum strength MPa, fracture strain %) of the ternary Ti-Fe-Sn (2 ≤ x ≤ 6) are considerably improved compared to the Ti Fe binary alloy ( MPa, %).

The change in the morphology of the eutectic, the microstructure refinement, structural fluctuations, and supersaturation in the β-Ti phase.Properties of Some Metals and Alloys COPPER AND COPPER ALLOYS • WHITE METALS AND ALLOYS • ALUMINUM AND ALLOYS • MAGNESIUM ALLOYS • TITANIUM.Ni-Mo-ZrO2 composite coatings were produced by pulse electrodeposition technique from alkaline electrolytes containing dispersed ZrO2 nanopowder.

The structure, microhardness, corrosion properties and tribological properties of Ni-Mo-ZrO2 composites with different content of molybdenum and ZrO2 have also been examined. Structural characterization was performed using X-ray diffraction (XRD) .