Volumetric changes associated with B2-(Ni, Fe) Al dissolution in an Al-alloyed ferritic steel
Abstract An Al-alloyed Fe–Cr–Ni–Al–Mn–C ferritic stainless steel exhibited a high apparent
coefficient of thermal expansion during continuous heating in the temperature range of 800–
1050° C. The anomaly was ascribed to the matrix lattice expansion associated with the
dissolution of (Ni, Fe) Al precipitates with a B2-CsCl crystal structure. The expansion was
justified on the basis of the Al and Ni enrichment of the ferritic matrix as the precipitates
dissolved.
coefficient of thermal expansion during continuous heating in the temperature range of 800–
1050° C. The anomaly was ascribed to the matrix lattice expansion associated with the
dissolution of (Ni, Fe) Al precipitates with a B2-CsCl crystal structure. The expansion was
justified on the basis of the Al and Ni enrichment of the ferritic matrix as the precipitates
dissolved.
Abstract
An Al-alloyed Fe–Cr–Ni–Al–Mn–C ferritic stainless steel exhibited a high apparent coefficient of thermal expansion during continuous heating in the temperature range of 800–1050 °C. The anomaly was ascribed to the matrix lattice expansion associated with the dissolution of (Ni,Fe)Al precipitates with a B2-CsCl crystal structure. The expansion was justified on the basis of the Al and Ni enrichment of the ferritic matrix as the precipitates dissolved.
Elsevier
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