Mapping microstructures from severe plastic deformation in machining

Sepideh Abolghasem, Saurabh Basu, Shashank Shekhar, Jiazhao Cai, M. Ravi Shankar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Surface generation by chip formation in machining involves unique Severe Plastic Deformation conditions characterized by superposition of large strains, strain-rates and thermomechanically coupled temperatures. Here, we use plane-strain machining itself as a test of microstructure response to create a knowledge-base of how thermomechanical conditions map to the quantitative characteristics of the deformed microstructure. To accomplish this, the mechanics of the deformation zone are characterized using digital image correlation and infrared thermography, followed by electron microscopy of the resulting chips. Ultimately, we propose Rate-Strain-Microstructure (RSM) map that is parameterized as functions of the strain, strain-rate and temperature, onto which the crystallographic characteristics of the deformed grain structure are projected. The RSM space is characterized by the x-axis as the Zener-Hollomon parameter and y-axis as the effective deformation strain. The implications of resulting mappings for microstructure prediction, control as well as for custom-designing refined surface microstructures, directly using machining are outlined.

Original languageEnglish (US)
Title of host publication40th North American Manufacturing Research Conference 2012 - Transactions of the North American Manufacturing Research Institution of SME
Pages406-413
Number of pages8
StatePublished - Nov 28 2012
Event40th Annual North American Manufacturing Research Conference, NAMRC40 - Notre Dame, IN, United States
Duration: Jun 4 2012Jun 8 2012

Publication series

NameTransactions of the North American Manufacturing Research Institution of SME
Volume40
ISSN (Print)1047-3025

Other

Other40th Annual North American Manufacturing Research Conference, NAMRC40
CountryUnited States
CityNotre Dame, IN
Period6/4/126/8/12

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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  • Cite this

    Abolghasem, S., Basu, S., Shekhar, S., Cai, J., & Shankar, M. R. (2012). Mapping microstructures from severe plastic deformation in machining. In 40th North American Manufacturing Research Conference 2012 - Transactions of the North American Manufacturing Research Institution of SME (pp. 406-413). (Transactions of the North American Manufacturing Research Institution of SME; Vol. 40).