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Effect of the chemical microinhomogeneity of solid solutions on the brittleness of chromium steels
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This study identified two temperature zones of chemical inhomogeneity in chromium steels that contribute to different forms of brittleness, with all brittleness forms manifesting as reduced capacity for microplastic deformation. The parameter sigma-squared can serve as a non-destructive monitor for embrittlement processes in chromium steel components. Note: this paper concerns materials engineering, not environmental microplastic pollution.
1. Together with the familiar low-temperature zone of chemical inhomogeneity (corresponding to 475-degree brittleness), a high-temperature region favorable to chemical inhomogeneity exists in chromium steels. 2. The development of chemical inhomogeneity of the solid solution in terms of chromium apparently makes a larger or smaller contribution to the development of different forms of brittleness in chromium steels: 475-degree brittleness, which is irreversible at 450°C, and reversible temper brittleness. 3. All forms of brittleness in chromium steels are similarly manifested in a change in ability to deform microplastically and, precisely, in an increase in the parameter σ 2 o , which can be used for the nondestructive monitoring of embrittlement processes.
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