Cold formability of AISI 1020 steel sheets
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Mustafa Kemal Kulekci
, Funda Kahraman , Ugur Esme and Bariş Buldum
Abstract
A forming limit diagram (FLD) illustrates the behavior of sheet metal under different levels of strain. The line describing the behavior of the metal is called forming limit curve (FLC). Forming limit diagram provides information on the maximum stress the metal can undergo before fracturing or necking. The diagrams are constructed by using forming limit test of sheet metal and measuring the deformation. In this study, formability of AISI 1020 sheet metal with different thickness were investigated using experimental data obtained from forming limit test. Forming limit diagram, strain hardening exponent (n) and height of cup values have been obtained for evaluating formability of the studied material. After each test, deformation of the grid was measured by using Mylar band and the true major and true minor strains were computed. Same formability results have been found from the FLD, strain hardening exponent and height of the cup for studied materials.
Kurzfassung
Ein Diagram der Verformbarkeitsgrenze (Forming Limit Diagram (FLD)) illustriert das Verhalten von Metallblechen bei verchiedenen Dehnungsniveaus. Die Linie, die das Verhalten des Metalls beschreibt, wird Grenzformkurve (Forming Limit Curve (FLC)) genannt. Das Diagram zur Verformbarkeitsgrenze bietet Informationen über die maximalen Spannungen, die ein Metall vor einem Bruch oder einer Einschnürung aushalten kann. Solche Diagramme werden erstellt, in dem der Verformbarkeitsgrenztest für Metallbleche angewendet wird und hierbei die Deformation gemessen wird. In der diesem Beitrag zugrunde liegenden Studie wurde die Verformbarkeit von AISI 1020 Metallblechen mit unterschiedlicher Dicke untersucht, wobei die experimentell ermittelten Daten aus dem Verformbarkeitsversuch verwendet wurden. Hierbei wurden das Diagramm der Verformungsgrenze, der Verfestigungsexponent und die Höhe der jeweiligen Tassen ermittelt, um die Verformbarkeit des untersuchten Werkstoffes zu evaluieren. Nach jedem Versuch wurde die Deformation des Gitters mittels eines Mylar-Bandes gemessen und die wahren Haupt- und untergeordneten Dehnungen errechnet. Es wurden gleiche Verformbarkeitsergebnisse aus den FLD, dem Verfestigungsexponenten und der Tassenhöhe für den untersuchten Werkstoff ermittelt.
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© 2015, Carl Hanser Verlag, München
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- Kalender/Calendar
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Articles in the same Issue
- Inhalt/Contents
- Inhalt
- Fachbeiträge/Technical Contributions
- Failure of porcelain coated heating elements used in regenerative air preheaters
- Mechanical characterization by DOE analysis of AA6156-T4 friction stir welded joints in as-welded and post-weld aged condition
- Cold formability of AISI 1020 steel sheets
- Optimierung einer Probenform für den Kreuzzugversuch zur Bestimmung der Grenzformänderung
- Friction weldability of a PA 6 polymer
- A discrete dislocation technique for fatigue microcracks (Part III)
- Flexure behavior of composite cantilevers subjected to different environmental conditions
- Structure investigation of soil aggregates treated with different organic matter using X-ray micro tomography*
- Investigation of the tool effect on the strength of friction stir spot welded aluminum specimens: A comparative study
- Microstructural and mechanical characterization of electric arc furnace (EAF) slag for use as abrasive grit material
- Charring rate of timbers in terms of size, layer material and fire class evaluated by the Taguchi method
- Tribological properties of boronized ferrous based PM journal bearings
- SNMS investigations of thermally sprayed coatings
- Kalender/Calendar
- Kalender