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Microstructure stabilization in a rapidly solidified Type 304 Stainless Steel: Influence on Tensile Properties

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Abstract

Tensile properties and their relationship with microstructural features were investigated for a rapid solidification processed (RSP) type 304 stainless steel (SS) extruded powder material and compared with those of a conventionally processed type 304 SS. Significant improvements in tensile strength were observed up to 800 °C (maximum test temperature) for the RSP alloy. Stable and fine microstructural features, including grain size, small matrix precipitates, high residual dislocation density, and a high population of nanosized void/cavities, were observed in the RSP specimens after heat treatments to0.9T m. The microstructural features directly re- sponsible for strengthening the RSP alloy were small grain size and the residual dislocation density.

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Authors and Affiliations

  1. Materials Technology, Idaho National Engineering Laboratory, EG&G Idaho,Inc., Idaho Falls, ID, 83415-2218

    John E. Flinn & Gary E. Korth

  2. University of Wisconsin-Madison, is with the Advanced Materials Center, Korea Academy of Industrial Technology, Seoul, Korea

    Jung Chan Bae

  3. Department of Materials Science and Metallurgical Engineering, University of Wisconsin-Madison, 53706, Madison, WI

    Thomas F. Kelly (Associate Professor)

Authors
  1. John E. Flinn
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  2. Jung Chan Bae
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  3. Thomas F. Kelly
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  4. Gary E. Korth
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Flinn, J.E., Bae, J.C., Kelly, T.F. et al. Microstructure stabilization in a rapidly solidified Type 304 Stainless Steel: Influence on Tensile Properties. Metall Trans A 23, 2557–2565 (1992). https://doi.org/10.1007/BF02658059

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