Prediction method of voids distribution in the punched surface of the spheroidizing annealed medium carbon steel sheet by the scrap

Ken Saito, Chikara Inoue, Kazuhiko Yamazaki, Sota Goto, Shinsuke Suzuki

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

Several studies have reported that voids near punched surface decrease stretch flange formability. However, non-destructive observation of voids near punched surface before hole expanding is difficult. Therefore, the authors assumed that the voids distribution in a thickness direction of blank (holder side) is point symmetrical with that of scrap (hole side). The objective of this study was to investigate validity of the assumption and establishing the prediction method of voids distribution near punched surface. After punching a spheroidizing annealed medium carbon steel sheet, voids near punched surface were measured. The distribution of the number density of voids in a thickness direction between scrap and blank had slight deviation in a thickness direction. The area fraction of voids of the scrap was higher than that of the blank. However, as these differences showed systematic tendencies, the voids distribution in a blank can be predicted through evaluation of its corresponding scrap.

本文言語English
ホスト出版物のタイトルMS and T 2019 - Materials Science and Technology 2019
出版社Materials Science and Technology
ページ929-937
ページ数9
ISBN(電子版)0873397703, 9780873397704
DOI
出版ステータスPublished - 2019
イベントMaterials Science and Technology 2019, MS and T 2019 - Portland, United States
継続期間: 2019 9 292019 10 3

出版物シリーズ

名前MS and T 2019 - Materials Science and Technology 2019

Conference

ConferenceMaterials Science and Technology 2019, MS and T 2019
国/地域United States
CityPortland
Period19/9/2919/10/3

ASJC Scopus subject areas

  • 材料科学(全般)

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