Abstract
DURING an investigation of the structure of a hardened 1½ per cent chromium steel, the presence of a small amount of retained austenite was observed in the microstructure. Examination of this material by the glancing-angle X-ray diffraction technique revealed retained austenite on a surface mechanically polished and etched for micro-examination, whereas retained austenite could not be found on the surface of a fracture produced by fatigue, or on a freshly produced brittle fracture surface.
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References
Averbach, B. L., Lorris, S. G., and Cohen, M., Trans. Amer. Soc. Met., 44, 746 (1952).
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PATEMAN, L., PEISER, H. An X-Ray Diffraction Study of the Transformation of Retained Austenite by Fracture. Nature 171, 696–697 (1953). https://doi.org/10.1038/171696a0
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DOI: https://doi.org/10.1038/171696a0
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