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Rao, Ziyuan (author), Dutta, B. (author), Körmann, F.H.W. (author), Lu, Wenjun (author), Zhou, Xuyang (author), Liu, Chang (author), da Silva, Alisson Kwiatkowski (author), Wiedwald, Ulf (author), Spasova, Marina (author), Farle, Michael (author), Ponge, Dirk (author), Gault, Baptiste (author), Neugebauer, Jörg (author), Raabe, Dierk (author), Li, Zhiming (author)Since its first emergence in 2004, the high-entropy alloy (HEA) concept has aimed at stabilizing single- or dual-phase multi-element solid solutions through high mixing entropy. Here, this strategy is changed and renders such massive solid solutions metastable, to trigger spinodal decomposition for improving the alloys’ magnetic properties....journal article 2021
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Guo, Wenqi (author), Su, Jing (author), Lu, Wenjun (author), Liebscher, Christian H. (author), Kirchlechner, Christoph (author), Ikeda, Yuji (author), Körmann, F.H.W. (author), Liu, Xuan (author), Xue, Yunfei (author), Dehm, Gerhard (author)In conventional metallic materials, strength and ductility are mutually exclusive, referred to as strength-ductility trade-off. Here, we demonstrate an approach to improve the strength and ductility simultaneously by introducing micro-banding and the accumulation of a high density of dislocations in single-phase high-entropy alloys (HEAs). We...journal article 2020
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Sohn, Seok Su (author), Kwiatkowski da Silva, Alisson (author), Ikeda, Yuji (author), Körmann, F.H.W. (author), Lu, Wenjun (author), Choi, Won Seok (author), Gault, Baptiste (author), Ponge, Dirk (author), Neugebauer, Jörg (author), Raabe, Dierk (author)Severe lattice distortion is a core effect in the design of multiprincipal element alloys with the aim to enhance yield strength, a key indicator in structural engineering. Yet, the yield strength values of medium- and high-entropy alloys investigated so far do not substantially exceed those of conventional alloys owing to the insufficient...journal article 2019