Ultrafine- grained microstructures and mechanical properties of alloy steels

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MILLER RL
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| 1600年 / 03期
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Specimens with grain sizes in the range 0. 3 to 1. 1 Um were obtained in cold worked manganese and nickel steels by annealing 1 to 4000 hr at temperatures between 450 and 650 C. The expected improvement in yield strength through grain refinement was observed in almost all specimens. Depending on such factors as grain size, austenite stability, and specimen geometry, three types of plastic behavior were observed.
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