Influence of size effects on material properties and springback behavior of metal foils in micro bending: a review

Xiaoyu Liu, Shiping Zhao, Yi Qin, Wan Adian Wan Nawang

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With product miniaturization, the requirement on good forming quality and high dimensional accuracy of micro parts is increasing dramatically. In micro bending process, the springback, a critical factor for the accuracy of micro-bent parts, is significantly affected by size effects. In view of the strong influence of material properties on springback behavior, this paper first reviews the influences of three size-dependent factors on material properties, including foil thickness, grain size and thickness to grain size ratio. Afterwards, the review on the influences of these factors on springback behavior are presented, aiming at enhancing the understanding of relevant size effects and proposing a quantitative analysis approach to evaluate the dimensional accuracy of micro-bent parts.
Original languageEnglish
Number of pages7
JournalMATEC Web of Conferences
Publication statusPublished - 10 Aug 2015
Event4th International Conference on New Forming Technology - Crowne Plaza Glasgow, Glasgow, United Kingdom
Duration: 6 Aug 20159 Aug 2015 (conference web site)



  • product miniaturization
  • micro parts
  • micro bending
  • springback

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