Effect of the ductility enhancement on the forming limit of the multilayer metallic sheet

T. Oya, C. Jeong, J. Yanagimoto, T. Koseki

研究成果: Conference contribution

1 引用 (Scopus)

抜粋

In this paper, the effect of ductility enhancement on the forming limit of the multilayer metallic sheet Is investigated. Multilayer metallic sheet consists of high-ductility soft material and high-strength hard material, and each constituent material Is layered alternately. The remarkable feature of this metal Is that the constituent hard layer can be elongated beyond its fracture strain. Geometric constraint by the soft layer plays a significant role In enhancing the ductility of the hard layer. This paper deals with this effect In terms of load transfer between the constituent materials. Using the load function of each component, the effect of the ductility enhancement is analyzed quantitatively. The mechanism presented In this paper clearly describes how a multilayer metallic sheet elongates and fractures. Namely, when the constituent soft layer attains to the maximum load, diffuse necking in the soft layer occurs, which immediately trigger the entire fracture of the sheet. To obtain a precise forming limit, the change of work-hardening property along with the above-mentioned mechanism should be treated. Investigations with experimental data verified the effectiveness of this treatment.

元の言語English
ホスト出版物のタイトルSpecial Edition
ホスト出版物のサブタイトル10th International Conference on Technology of Plasticity, ICTP 2011
ページ622-627
ページ数6
出版物ステータスPublished - 2011 12 1
イベント10th International Conference on Technology of Plasticity, ICTP 2011 - Aachen, Germany
継続期間: 2011 9 252011 9 30

出版物シリーズ

名前Special Edition: 10th International Conference on Technology of Plasticity, ICTP 2011

Other

Other10th International Conference on Technology of Plasticity, ICTP 2011
Germany
Aachen
期間11/9/2511/9/30

    フィンガープリント

ASJC Scopus subject areas

  • Polymers and Plastics

これを引用

Oya, T., Jeong, C., Yanagimoto, J., & Koseki, T. (2011). Effect of the ductility enhancement on the forming limit of the multilayer metallic sheet. : Special Edition: 10th International Conference on Technology of Plasticity, ICTP 2011 (pp. 622-627). (Special Edition: 10th International Conference on Technology of Plasticity, ICTP 2011).