By Wesley A. Salandro, Joshua J. Jones, Visit Amazon's Cristina Bunget Page, search results, Learn about Author Central, Cristina Bunget, , Laine Mears, John T. Roth
Maximizing reader insights into the newest learn findings and purposes of Electrically-Assisted Forming (EAF) – wherein metals are shaped below an electrical present box – this ebook explains how one of these technique produces speedy stronger formability of metals past the level of thermal softening, and permits metals to be shaped to larger elongation with reduce mechanical strength in addition to bearing in mind light-weight brittle metals corresponding to magnesium and titanium to be shaped with no exterior heating or annealing, allowing the more advantageous use of those light-weight metals in design.
Including case reports that illustrate and help the theoretical content material and real-world purposes of the recommendations mentioned, this booklet additionally serves to complement readers figuring out of the underlying theories that effect electro-plastic behaviour.
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Extra info for Electrically Assisted Forming: Modeling and Control
Salandro WA, Roth JT (2009) Formation of 5052 aluminum channels using electricallyassisted manufacturing (EAM). Siopis MS, Kinsey BL (2009) Experimental investigation of grain and specimen size effects during electrical-assisted forming. Siopis MS, Kinsey BL, Kota N, Ozdoganlar OB (2010) Effect of severe prior deformation on electrical-assisted compression of copper specimens. Dzialo CM, Siopis, Kinsey BL, Weinmann KJ (2010) Effect of current density and zinc content during electrical-assisted forming of copper alloys.
2 Body-Centered Cubic The number of neighboring atoms contacting each atom in a Body-Centered Cubic (BCC) metal is 8 (the coordination number). 68, which is lower than the FCC metal. The BCC metals can have 12 or 24 slip systems, depending on the different slip plane/direction combinations. Iron is an example of a BCC metal [21, 22]. 74, respectively. The HCP metals have the lowest number of slip systems, with three; therefore plastic deformation by way of dislocation motion can be difficult and makes this class of metals act brittle.
Also noted in the figure are the crystalline structures of the specific materials. It can be seen that, for these four metals, there is not a relation between the crystalline structure and the electrical threshold. 1 Lightweight materials and respective electrical thresholds [38–41] Material Electrical threshold (A/mm2) 60 Crystalline structure Resistivity (Ωm) Threshold reference Specimen size (mm) Def. 99E-08 Perkins et al. Jones et al. 78E-06 Ti-6Al-4 V Perkins et al. Perkins et al. 4 Electroplasticity and Electromigration The above-described effects are shown experimentally to be due not just to bulk thermal influences.
Electrically Assisted Forming: Modeling and Control by Wesley A. Salandro, Joshua J. Jones, Visit Amazon's Cristina Bunget Page, search results, Learn about Author Central, Cristina Bunget, , Laine Mears, John T. Roth