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Title: Characterizing the stretch-flangeability of hot rolled multiphase steels

Hole expansion tests are commonly used to characterize the edge stretching limit of a material. Traditionally, a conical punch is used to expand a punched hole until a through-thickness crack appears. However, many automotive stretch flanging operations involve in-plane edge stretching that is best captured with a flat punch. In this paper, hole expansion tests were carried out on two different hot-rolled multiphase steels using both flat and conical punches. The fracture mechanisms for both punch types were investigated using scanning electron microscopy (SEM)
Authors:
; ;  [1] ;  [2]
  1. Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo (Canada)
  2. ArcelorMittal Dofasco, Hamilton (Canada)
Publication Date:
OSTI Identifier:
22261663
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1567; Journal Issue: 1; Conference: NUMISHEET 2014: 9. international conference and workshop on numerical simulation of 3D sheet metal forming processes, Melbourne (Australia), 6-10 Jan 2014; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CRACKS; FRACTURES; SCANNING ELECTRON MICROSCOPY; STEELS; THICKNESS