4 papers
Grain boundary segregation of light elements and their effects on cohesion in ferritic steels
Han Lin Mai, Xiang-Yuan Cui, Tilmann Hickel +2
Light elements play an important role in influencing the macroscale properties of engineering alloys through grain boundary (GB) segregation phenomena. However, the scarcity and sc…
Microstructural origin of the simultaneous enhancements in strength and ductility of a nitrogen-doped high-entropy alloy
Xiaoxiang Wu, Zhujun Sun, Wenqi Guo +9
As one of the most abundant interstitial elements, nitrogen (N) is effective in improving yield strength of metallic materials, due to interstitial solid solution strengthening. Do…
Ultrastrong and ductile CoNiMoAl medium-entropy alloys enabled by L12 nanoprecipitate-induced multiple deformation mechanisms
Min Young Sung, Tae Jin Jang, Sang Yoon Song +11
L12 precipitates are known to significantly enhance the strength and ductility of single-phase face-centered cubic (FCC) medium- or high-entropy alloys (M/HEAs). However, further i…
A high-throughput ab initio study of elemental segregation and cohesion at ferritic-iron grain boundaries
Han Lin Mai, Xiang-Yuan Cui, Tilmann Hickel +2
Segregation of alloying elements and impurities at grain boundaries (GBs) critically influences material behavior by affecting cohesion. In this study, we present an ab initio high…