Open AccessEffects of interstitial carbon atoms on texture structure and mechanical properties of FeMnCoCr alloys
Author(s) -
Chuan Qian,
Yuanhe Qiu,
Ziyang He,
Weiwei Mu,
Yuxia Tang,
Haijun Wang,
Mengmeng Xie,
Weixi Ji
Publication year - 2020
Publication title -
plos one
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.99
H-Index - 332
ISSN - 1932-6203
DOI - 10.1371/journal.pone.0242322
Subject(s) - materials science , alloy , microstructure , diffraction , cubic crystal system , phase (matter) , electron backscatter diffraction , saturation (graph theory) , elastic modulus , texture (cosmology) , carbon fibers , crystallography , composite material , optics , chemistry , physics , mathematics , organic chemistry , image (mathematics) , combinatorics , artificial intelligence , computer science , composite number
In this paper, a (Fe 50 Mn 30 Co 10 Cr 10 ) 100-x C x high-entropy alloy (HEA) was successfully prepared by using the vacuum arc melting method. The peak shape analysis of the X-ray diffraction patterns, the EBSD observations, and the EDS spectra of the alloys with different compositions show that the characteristics of the dendrites and the hard phase, Cr 23 C 6 , into the initial single-phase face-centered cubic (FCC) matrix becomes gradually visible as the carbon content increases from 0 to 4%. The crystal phase variations lead to a non-linear orientation of the microstructure, to a refinement of the grains, and to a higher elastic modulus. This study presents the solid saturation limit of the interstitial carbon atoms in such alloys and establishes an empirical relation between an alloy’s elastic modulus and its carbon content.