Localized Deformation due to Portevin-LeChatelier Effect in 18Mn-0.6C TWIP Austenitic Steel

By Lei Chen, Han‐Soo Kim, Sung-kyu Kim, B. D. Cooman. 2007

280 citations recorded by the source corpus.

The thermo-mechanical properties of low stacking fault energy austenitic Fe18Mn0.6C steel exhibiting twinning-induced plasticity were investigated during uniaxial tensile deformation using infrared thermography. Over a wide strain range, the plastic deformation was by the movement of very few well-defined localized deformation bands. The formation and propagation of Portevin–LeChatelier (PLC) bands lead to type A and type B serrated stress–strain curves, exhibiting a negative strain rate sensitivity. The PLC band properties were analyzed in detail: strain, strain rate and mobile dislocation density within the bands were determined. The microstructures of the un-deformed and deformed Fe18Mn0.6C TWIP steel were studied by transmission electron microscopy. The possible dynamic strain aging processes causing the localized deformation are reviewed.

Subfields: Materials Chemistry, Mechanical Engineering, Metals and Alloys

View Paper: https://www.semanticscholar.org/paper/7b30ab062bfc08a31a72a3fe2ccf53ad7fc52d61

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In Materials Chemistry

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  3. K. Tsuzaki
  4. E. Akiyama
  5. Young‐kook Lee
  6. O. A. Zambrano
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In Mechanical Engineering

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  6. O. A. Zambrano
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In Metals and Alloys

  1. Dierk Raabe
  2. Motomichi Koyama
  3. E. Akiyama
  4. K. Tsuzaki
  5. Young‐kook Lee
  6. O. A. Zambrano
  7. C. Tasan

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