Details
| Original language | English |
|---|---|
| Title of host publication | Creation of High-Strength Structures and Joints by Setting up Local Material Properties (II) |
| Editors | Heinz Palkowski, Kai-Michael Rudolph |
| Pages | 191-217 |
| Number of pages | 27 |
| Publication status | Published - 19 Oct 2010 |
Publication series
| Name | Advanced Materials Research |
|---|---|
| Volume | 137 |
| ISSN (Print) | 1022-6680 |
Abstract
A promising approach to handling low ductile aluminium alloys in a forming process is forming under superimposed hydrostatic pressure. The influence of superimposed hydrostatic pressure on the flow stress as well as on the formability for various hydrostatic pressures and temperatures was analysed [15, 3, and 7]. By increasing the formability of the workpiece, larger local plastic strains could be achieved. The results reveal highly increased formability at superimposed pressure of 85 MPa for workpieces from thermosetting alloy AlSi1MgMn (EN AW-6082) in comparison to those from self-hardening alloy AlMg4.5Mn0.7 (EN AW-5083). As a general tendency, the self-hardening alloys show a lower increase in formability when forged under superimposed pressure. But additionally, a charge-dependent influence of macro- and micro defects on the crack resistance was detected for alloy AlMg4.5Mn0.7. By evaluating damage models in finite element models the damage occurring in cold forming processes under superimposed hydrostatic pressure was predicted.
Keywords
- Active means, Cold forging, Damage prediction, Simulation, Strain hardening, Superimposed hydrostatic pressure
ASJC Scopus subject areas
- Engineering(all)
- General Engineering
Cite this
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Creation of High-Strength Structures and Joints by Setting up Local Material Properties (II). ed. / Heinz Palkowski; Kai-Michael Rudolph. 2010. p. 191-217 (Advanced Materials Research; Vol. 137).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Forging of Aluminium Components under a Superimposed Hydrostatic Pressure to Induce Local Strain Hardening
AU - Behrens, Bernd Arno
AU - Hagen, Thomas
AU - Klassen, Andreas
AU - Knigge, Julian
AU - Mielke, Jens
AU - Pfeiffer, Insa
PY - 2010/10/19
Y1 - 2010/10/19
N2 - A promising approach to handling low ductile aluminium alloys in a forming process is forming under superimposed hydrostatic pressure. The influence of superimposed hydrostatic pressure on the flow stress as well as on the formability for various hydrostatic pressures and temperatures was analysed [15, 3, and 7]. By increasing the formability of the workpiece, larger local plastic strains could be achieved. The results reveal highly increased formability at superimposed pressure of 85 MPa for workpieces from thermosetting alloy AlSi1MgMn (EN AW-6082) in comparison to those from self-hardening alloy AlMg4.5Mn0.7 (EN AW-5083). As a general tendency, the self-hardening alloys show a lower increase in formability when forged under superimposed pressure. But additionally, a charge-dependent influence of macro- and micro defects on the crack resistance was detected for alloy AlMg4.5Mn0.7. By evaluating damage models in finite element models the damage occurring in cold forming processes under superimposed hydrostatic pressure was predicted.
AB - A promising approach to handling low ductile aluminium alloys in a forming process is forming under superimposed hydrostatic pressure. The influence of superimposed hydrostatic pressure on the flow stress as well as on the formability for various hydrostatic pressures and temperatures was analysed [15, 3, and 7]. By increasing the formability of the workpiece, larger local plastic strains could be achieved. The results reveal highly increased formability at superimposed pressure of 85 MPa for workpieces from thermosetting alloy AlSi1MgMn (EN AW-6082) in comparison to those from self-hardening alloy AlMg4.5Mn0.7 (EN AW-5083). As a general tendency, the self-hardening alloys show a lower increase in formability when forged under superimposed pressure. But additionally, a charge-dependent influence of macro- and micro defects on the crack resistance was detected for alloy AlMg4.5Mn0.7. By evaluating damage models in finite element models the damage occurring in cold forming processes under superimposed hydrostatic pressure was predicted.
KW - Active means
KW - Cold forging
KW - Damage prediction
KW - Simulation
KW - Strain hardening
KW - Superimposed hydrostatic pressure
UR - http://www.scopus.com/inward/record.url?scp=78650729365&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMR.137.191
DO - 10.4028/www.scientific.net/AMR.137.191
M3 - Conference contribution
AN - SCOPUS:78650729365
SN - 9780878492343
T3 - Advanced Materials Research
SP - 191
EP - 217
BT - Creation of High-Strength Structures and Joints by Setting up Local Material Properties (II)
A2 - Palkowski, Heinz
A2 - Rudolph, Kai-Michael
ER -