Semantic Scholar extracted view of "Formability of a commercially pure zirconium sheet" by H. Takuda et al. Skip to search form Skip to main content Skip to ...
Among the methodologies to evaluate formability, forming limit diagrams plays a relevant role. Forming Limit Diagram. The maximum values of the principal in-plane strains ε 1 and ε 2 can be determined by measuring the strains at failure (necking, fracture, wrinkling, etc.) on sheet components covered with grids of circles. The research in this …
A viscoplastic self-consistent crystal plasticity model was employed to study the formability of two magnesium sheet alloys, i.e., AZ31 and ZE10 at 200 °C. The
The strongly anisotropic mechanical behaviors commonly observed in Zr-4 sheets typically lead to inferior formability. In this study, the mechanical behavior and texture evolution of a cold-rolled Zr-4 sheet under uniaxial tension in various directions were systematically investigated, and the results showed both anisotropic yielding and …
To examine the formability of sheet zirconium in forming processes, some fundamental sheet forming tests, i.e. the deep drawing, the Erichsen and the bore-expanding tests are carried out for a commercially-pure zirconium sheet. The tensile properties are also examined by uniaxial tension tests in the directions of 0°, 45° and 90° to the rolling …
To examine the fundamental sheet formability of zirconium, deep drawing, Erichsen and bore-expanding tests are carried out for a commercially pure zirconium …
Therefore, research on the formability of zirconium alloy sheet is . very necessary. Generally, there are many factors which affected the formability of zirconium alloy . sheet.
The process formability of incremental sheet forming (ISF) is better than the conventional forming processes. Stretching, through-thickness-shear, bending-under-tension (BUT), and compressive forces are the proposed deformation mechanisms for improved formability; however, researchers have not corroborated (on consensus) the relative significance of …
Free Online Library: Study on Formability Improvement of Zr-4 Sheets Based on Texture Optimization. by "Metals"; Metals, metalworking and machinery Nuclear energy Innovations Nuclear facilities Simulation Analysis Simulation methods. Printer Friendly. 34,707,917 articles and books.
Many urgently needed inconel superalloy parts with complex internal cavity geometry and high surface precision are difficult to prepare by traditional subtractive manufacturing methods because of its poor machinability. The additive manufacturing technology that has emerged in recent years became a research hotspot in the …
Due to the poor formability of zirconium alloy, crack is one of its most common failure modes when the alloy is used for strips of spacer grids of nuclear fuel assembly during the sheet forming process.
A positioning grid is a key clamping structure for fixing the transverse and axial positions of fuel assemblies in nuclear reactors, and it is generally prepared by the transverse stamping of a Zr-4 sheet. However, the texture formed in the processing process of Zr-4 sheets can affect formability, resulting in cracking in the stamping process. …
Zircaloy-4 (Zr-4) sheet is commonly used in fuel assembly structural parts as spacer grids which are subjected to high temperature and stresses, corrosive and radiation environment. The knowledge regarding the properties and the formability with respect to initial texture of Zr-4 sheet is not enough. In this paper, finite element method was used …
Different material state can affect formability of AlMgSi sheets. These study analysed the influence of heat treatment conditions on the drawability of the sheet made of 6082 aluminium alloy. The ...
DOI: 10.1016/j.egyr.2021.09.013 Corpus ID: 240508927; Crack prediction in sheet forming of zirconium alloys used in nuclear fuel assembly by support vector machine method @article{Lei2021CrackPI, title={Crack prediction in sheet forming of zirconium alloys used in nuclear fuel assembly by support vector machine method}, author={Congyi Lei and …
Forming limit curves (FLC) have been extensively used to evaluate formability in the sheet metal forming industry. The first FLC was experimentally plotted using the grids of circles printed or etched before the forming. ... And the forming limit margin fields of the zirconium alloy under AT I can reach 0.43%, while the values of the …
To examine the formability of sheet zirconium in forming processes, some fundamental sheet forming tests, i.e. the deep drawing, the Erichsen and the bore-expanding tests …
Request PDF | Compositional optimization of Mg–Zn–Sc sheet alloys for enhanced room temperature stretch formability | Effects of scandium (Sc) content on microstructures and mechanical ...
Semantic Scholar extracted view of "Study on deformation mechanisms and stretch formability of zirconium alloys with different textures under biaxial tensile stress" by Hong Gao et al. ... Influence of stress state on microstructure evolution of AZ31 Mg alloy rolled sheet during deformation at room temperature. Dabiao Xia Guangsheng Huang ...
Narashimhan K, Nandedkar VM (1996) Formability testing of sheet metals. Transactions of the Indian Institute of Metals 49:659–676. Google Scholar Parniere P, Sanz G (1976) Formability of thin sheet. In: Baudelet B (ed) Metal forming of the metals and alloys. Editions CNRS, Paris, 305–330 (in French) Google Scholar
In this study, the formability of sheet zirconium was analytically as well as experimentally investigated. The cylindrical deep drawing, Erichsen and bore-expanding …
Formability is the ability of a given metal work piece to undergo plastic deformation without being damaged. The plastic deformation capacity of metallic …
steel Bubble chart. steel Banana diagram. Steel strength ductility diagram—it's been called a lot of things over the years. Now called the steel Global Formability Diagram, a new 2021 version is available for download and use. In addition in this article, we define Advanced High-Strength Steels, Ultra-High-Strength Steels and 3rd Generation steels.
Various theoretical and empirical models have been developed to predict the formability of metallic sheets, as shown in Fig. 3.Primary models used for forming limit prediction include the models based on bifurcation theory, the models based on geometrical imperfection theory and the models based on continuum damage mechanics.
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The current research focusses on the forming limit curves (FLC), which is one of the way of investigation performed to predict the formability of the material Zirconium 702 (Zr702) with the sheet ...
Microstructures and formability of scandium and zirconium added Al-Mg-Mn alloy sheets with various heating conditions were examined to improve their mechanical properties. Formability of these samples were judged by the Lankford value, r-value. It was possible to fabricate mechanically balanced Al-M …
Zirconium and Scandium additives, up to 0.02 percent, have been found to effectively increase UTS and YS. 3. Scandium and zirconium additives were found to successfully compensate for the decrease in Magnesium. 4.
Chemical processing, nuclear, and more—GSM's ASTM B551 zirconium and zirconium alloy strip, sheet, and plate meet critical industry needs. Home; Products. Titanium Alloys ... Ductility (potentially varies by grade): Depending on the specific grade, the sheet and plate might offer some formability for shaping during fabrication. High Melting ...