A comparative study on process potentials for frictional stir- And electric hot-assisted incremental sheet forming

Dongkai Xu, Bin Lu, Tingting Cao, Jun Chen*, Hui Long, Jian Cao

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

28 Scopus citations

Abstract

Incremental sheet forming (ISF), as an advanced forming technique, has received increasing interest from both academia and industry due to its improved formability, greater process flexibility and reduced energy consumption in its life cycle. However, with the growing application of lightweight alloys with very limited material elongation, conventional ISF inevitably encounters challenges in processing these alloys at room temperature, especially in forming magnesium and titanium alloys. Therefore, heat-assisted ISF techniques have been proposed to further enhance material formability at elevated temperatures. In this work, two heat-assisted ISF approaches, frictional stir- And electric hot- Assisted ISF, have been employed to process the hard-to-form materials in terms of the flexibility and local dynamic heating. The temperature evolution and corresponding forming force at different feed rates of these two techniques, is investigated in detail to build up a processing window. In addition, process capabilities are compared by forming different geometrical shapes of magnesium alloy AZ31B of 1.4 mm sheet thickness. The investigation results show the pros and cons of frictional stir- And electric hot- Assisted ISF. Frictional stirassisted ISF is more efficient than electric hot-assisted ISF under current experimental results. However, electric hot-assisted ISF has faster heating rate which makes this technique less dependent on the component geometry.

Original languageEnglish (US)
Pages (from-to)2324-2329
Number of pages6
JournalProcedia Engineering
Volume81
DOIs
StatePublished - 2014
Event11th International Conference on Technology of Plasticity, ICTP 2014 - Nagoya, Japan
Duration: Oct 19 2014Oct 24 2014

Keywords

  • Electric heating
  • Frictional heating
  • Hot forming
  • Incremental sheet forming (ISF)
  • Process capability

ASJC Scopus subject areas

  • Engineering(all)

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