Microstructure and Strengthening Mechanisms in an HSLA Steel Subjected to Tempforming
نویسندگان
چکیده
An effect of tempforming on the microstructure, carbide precipitation, and strengthening mechanisms high-strength low-alloyed steel has been analyzed. The quenched was subjected to 1 h tempering at a temperature 873 K, 923 or 973 K followed by plate rolling same temperature. Tempforming resulted in formation an ultrafine grained lamellar-type microstructure with finely dispersed carbides (Nb,V)C, Fe3C Cr23C6. A decrease reduction transverse grain size from 950 nm 350 nm. Correspondingly, Fe3C/Cr23C6 particles decreased 90 40 while (Nb,V)C 17 4 Refining tempformed thetempforming provided increase yield strength 690 MPa 1230 MPa.
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ژورنال
عنوان ژورنال: Metals
سال: 2021
ISSN: ['2075-4701']
DOI: https://doi.org/10.3390/met12010048