Morphological and Crystallographic Characteristics of α Structure in a Low-Carbon Iron–Nickel Alloy
AbstractThe features of α (body-centered cubic) structures were investigated in a low-carbon multicomponent alloy from morphological and crystallographic perspectives. In addition to apparent features of granular bainite and lamellar martensite, a morphological similarity can be found between lath martensite and lath bainite. Therefore, it is of interest to explore possible discrepancies between lath martensite and lath bainite from a crystallographic perspective. These microstructures were obtained by various cooling rates (i.e., water quenching, 5 °C/s, and 0.05 °C/s) and then were characterized by a combination of scanning electron microscopy and electron backscattered diffraction techniques. It is shown that: (1) Lath martensite (LM) formed in the samples that were water-quenched, and a mixture of LM and lath bainite (LB) and granular bainite (GB) formed in the samples cooled at rates of 5 °C/s and 0.05 °C/s, respectively; (2) A Kurdjumov-Sachs relationship was mostly found in as-quenched martensite, while a Greninger-Troiano relationship represented the orientation relationship of LB and GB; (3) As the cooling rate decreased, the dislocation densities in corresponding microstructures were reduced, while the tendency of variant grouping was enhanced. View Full-Text
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Mao, G.; Cayron, C.; Mao, X.; Cao, R.; Logé, R.; Chen, J. Morphological and Crystallographic Characteristics of α Structure in a Low-Carbon Iron–Nickel Alloy. Crystals 2018, 8, 468.
Mao G, Cayron C, Mao X, Cao R, Logé R, Chen J. Morphological and Crystallographic Characteristics of α Structure in a Low-Carbon Iron–Nickel Alloy. Crystals. 2018; 8(12):468.Chicago/Turabian Style
Mao, Gaojun; Cayron, Cyril; Mao, Xiuli; Cao, Rui; Logé, Roland; Chen, Jianhong. 2018. "Morphological and Crystallographic Characteristics of α Structure in a Low-Carbon Iron–Nickel Alloy." Crystals 8, no. 12: 468.
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