Effects of starting microstructure on deformation behavior of commercially pure Ni blanks during micro-deep drawing was studied utilizing microforming set up that sits inside the chamber of Scanning Electron Microscopy (SEM) enables in situ observation of material flow during deformation. Various microstructure fields were created in Ni blanks using Severe Plastic Deformation (SPD) and heat treatment. SEM based Digital Image correlation (DIC) technique was used to characterize the micromechanics of deformation and its relation to process outcomes/performance. Pre and post–deformation microstructure analysis was carried out by performing Orientation Imaging Microscopy (OIM) to track the microstructure evolution across the micro-formed blanks during deformation in order to identify the process anomalies originated from the characteristics of starting microstructure and its interaction with deformation mechanics. We showed that microstructurally graded sheets consisting of nano-grained/coarse-grained layers significantly improves the formability of micro-blanks and effectively delays strain localization and onset of instability/failure during micro-deep drawing.
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ASME 2016 11th International Manufacturing Science and Engineering Conference
June 27–July 1, 2016
Blacksburg, Virginia, USA
Conference Sponsors:
- Manufacturing Engineering Division
ISBN:
978-0-7918-4990-3
PROCEEDINGS PAPER
Microstructure Engineering of Commercially Pure Ni Sheets to Enhance Micro-Deep Drawing Formability Available to Purchase
Marzyeh Moradi,
Marzyeh Moradi
Carnegie Mellon University, Pittsburgh, PA
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M. Ravi Shankar
M. Ravi Shankar
University of Pittsburgh, Pittsburgh, PA
Search for other works by this author on:
Marzyeh Moradi
Carnegie Mellon University, Pittsburgh, PA
M. Ravi Shankar
University of Pittsburgh, Pittsburgh, PA
Paper No:
MSEC2016-8609, V002T01A004; 10 pages
Published Online:
September 27, 2016
Citation
Moradi, M, & Shankar, MR. "Microstructure Engineering of Commercially Pure Ni Sheets to Enhance Micro-Deep Drawing Formability." Proceedings of the ASME 2016 11th International Manufacturing Science and Engineering Conference. Volume 2: Materials; Biomanufacturing; Properties, Applications and Systems; Sustainable Manufacturing. Blacksburg, Virginia, USA. June 27–July 1, 2016. V002T01A004. ASME. https://doi.org/10.1115/MSEC2016-8609
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