TY - JOUR
T1 - Strain-Induced Surface Roughening of Thin Sheets and Its Effects on Metal Forming and Component Properties
AU - Arinbjarnar, Ulfar
AU - Christiansen, Rune Juul
AU - Knoll, Maximilian
AU - Pantleon, Karen
AU - Jellesen, Morten Stendahl
AU - Nielsen, Chris Valentin
PY - 2023
Y1 - 2023
N2 - Straining of sheet metal leads to surface roughness changes. In this study, foils of AISI 201 and AISI 304 stainless steel were strained in uniaxial tension to impose roughening of their surfaces. Thereafter, the corrosion resistance, electrical resistivity, magnetic field density, and lubricated friction of the resulting surfaces were evaluated. The effect of strain-rate on the surface roughening, and thereby on the friction against tools, corrosion resistance, and occurrence of deformation-induced martensite was investigated. The AISI 304 material showed higher roughening than AISI 201 at low strain-rate. Lubricated friction is clearly affected by the changes to the surface of the strained foils that occur. When simulating a micro-forming process, the effect of strain-induced changes should be included where possible to maintain a high fidelity of the simulation. Strain-rate, in the range tested in this work, had only a minor effect on corrosion properties; however, the martensite fraction was reduced for material elongated at higher strain-rates.
AB - Straining of sheet metal leads to surface roughness changes. In this study, foils of AISI 201 and AISI 304 stainless steel were strained in uniaxial tension to impose roughening of their surfaces. Thereafter, the corrosion resistance, electrical resistivity, magnetic field density, and lubricated friction of the resulting surfaces were evaluated. The effect of strain-rate on the surface roughening, and thereby on the friction against tools, corrosion resistance, and occurrence of deformation-induced martensite was investigated. The AISI 304 material showed higher roughening than AISI 201 at low strain-rate. Lubricated friction is clearly affected by the changes to the surface of the strained foils that occur. When simulating a micro-forming process, the effect of strain-induced changes should be included where possible to maintain a high fidelity of the simulation. Strain-rate, in the range tested in this work, had only a minor effect on corrosion properties; however, the martensite fraction was reduced for material elongated at higher strain-rates.
KW - Micro-forming
KW - Corrosion resistance
KW - Friction
KW - Contact resistance
KW - Strain-rate
KW - Stainless steel
U2 - 10.3390/jmmp7050174
DO - 10.3390/jmmp7050174
M3 - Journal article
SN - 2504-4494
VL - 7
JO - Journal of Manufacturing and Materials Processing
JF - Journal of Manufacturing and Materials Processing
IS - 5
M1 - 174
ER -