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- W2074832464 abstract "Abstract Ultrafine grains were developed in Hadfield manganese steels through appropriate thermomechanical processing. The steels contained from 1.2 to 1.7 wt.% C and 12.3–16.3 wt.% Mn. The austenite grains. 2–8 μm in size, were stabilized against grain growth by a dispersion of fine carbides, typically less than 1 μm. The processed materials were evaluated for superplastic properties at elevated temperatures (750–900 °C). Values for the strain rate sensitivity exponent m in the expression σ=k dot e m ranged from 0.37 to 0.65. The value of m in the superplastic regime was found to depend on composition, grain size and temperature. At 23 °C, the fine-grain steels showed higher yield strengths and hardness values, but lower ductility, relative to values reported for commercially processed materials." @default.
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- W2074832464 date "1992-02-01" @default.
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- W2074832464 title "Development of ultrafine microstructures and superplasticity in Hadfield manganese steels" @default.
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- W2074832464 doi "https://doi.org/10.1016/0921-5093(92)90111-d" @default.
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