Comparsion of forming and fracture limits of an aluminum alloy and austenitic stainless steel

Antti Korhonen (Corresponding Author), Timo Manninen, J-W Yoon, Jari Larkiola

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

Forming and fracture limits of AA 3104 aluminum alloy and AISI 304 type stainless steel were studied. Hydraulic bulge testing was employed in the stretch forming experiments. Marciniak-type in-plane tests and tensile testing were carried out to study the limit strains in the deep drawing region. Both screen-printed and laser-marked grids were used to measure the surface strains. Although the forming limits of the AA 3104 were generally much lower than the AISI 304 stainless steel, they both failed in stretch forming by ductile shearing in the through thickness direction without any visible local necking. The preferred failure direction for AA 3104 alloy was transverse to the rolling direction, as could be observed in the bulge tests with a circular die. In the Marciniak-type in-plane tests the AA 3104 alloy showed multiple necking similar to what has previously been reported for low-carbon steel. In the tensile testing, central cracking and subsequent local necking as well as local necking without previous central crack formation were observed both for the AA 3104 aluminum alloy and the AISI 304 stainless steel.
Original languageEnglish
Pages (from-to)431-434
JournalInternational Journal of Material Forming
Volume2
Issue number1
DOIs
Publication statusPublished - 2010
MoE publication typeA1 Journal article-refereed

Fingerprint

Austenitic stainless steel
Aluminum alloys
Stainless Steel
Stainless steel
Tensile testing
Deep drawing
Low carbon steel
Shearing
Crack initiation
Hydraulics
Lasers
Testing
Direction compound
Experiments

Keywords

  • Forming limits
  • fracture
  • sheet metals
  • aluminum
  • austenitic stainless steel

Cite this

Korhonen, Antti ; Manninen, Timo ; Yoon, J-W ; Larkiola, Jari. / Comparsion of forming and fracture limits of an aluminum alloy and austenitic stainless steel. In: International Journal of Material Forming. 2010 ; Vol. 2, No. 1. pp. 431-434.
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abstract = "Forming and fracture limits of AA 3104 aluminum alloy and AISI 304 type stainless steel were studied. Hydraulic bulge testing was employed in the stretch forming experiments. Marciniak-type in-plane tests and tensile testing were carried out to study the limit strains in the deep drawing region. Both screen-printed and laser-marked grids were used to measure the surface strains. Although the forming limits of the AA 3104 were generally much lower than the AISI 304 stainless steel, they both failed in stretch forming by ductile shearing in the through thickness direction without any visible local necking. The preferred failure direction for AA 3104 alloy was transverse to the rolling direction, as could be observed in the bulge tests with a circular die. In the Marciniak-type in-plane tests the AA 3104 alloy showed multiple necking similar to what has previously been reported for low-carbon steel. In the tensile testing, central cracking and subsequent local necking as well as local necking without previous central crack formation were observed both for the AA 3104 aluminum alloy and the AISI 304 stainless steel.",
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Comparsion of forming and fracture limits of an aluminum alloy and austenitic stainless steel. / Korhonen, Antti (Corresponding Author); Manninen, Timo; Yoon, J-W; Larkiola, Jari.

In: International Journal of Material Forming, Vol. 2, No. 1, 2010, p. 431-434.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Comparsion of forming and fracture limits of an aluminum alloy and austenitic stainless steel

AU - Korhonen, Antti

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AB - Forming and fracture limits of AA 3104 aluminum alloy and AISI 304 type stainless steel were studied. Hydraulic bulge testing was employed in the stretch forming experiments. Marciniak-type in-plane tests and tensile testing were carried out to study the limit strains in the deep drawing region. Both screen-printed and laser-marked grids were used to measure the surface strains. Although the forming limits of the AA 3104 were generally much lower than the AISI 304 stainless steel, they both failed in stretch forming by ductile shearing in the through thickness direction without any visible local necking. The preferred failure direction for AA 3104 alloy was transverse to the rolling direction, as could be observed in the bulge tests with a circular die. In the Marciniak-type in-plane tests the AA 3104 alloy showed multiple necking similar to what has previously been reported for low-carbon steel. In the tensile testing, central cracking and subsequent local necking as well as local necking without previous central crack formation were observed both for the AA 3104 aluminum alloy and the AISI 304 stainless steel.

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