复式(建筑)
相(物质)
校长(计算机安全)
要素(刑法)
材料科学
计算机科学
政治学
物理
化学
计算机安全
DNA
生物化学
量子力学
法学
作者
Prashant Singh,Duane D. Johnson,Jordan Tiarks,Emma White,Andrew B. Kustas,Jonathan Pegues,Morgan R. Jones,Hannah H. Lim,Frank W. DelRio,Jay Carroll,Gaoyuan Ouyang,Michael J. Abere,Rameshwari Naorem,Hailong Huang,Trevor M. Riedemann,Paul Gabriel Kotula,Iver E. Anderson,Nicolas Argibay
摘要
Density-functional theory (DFT) is used to identify phase-equilibria in multi-principal-element and high-entropy alloys (MPEAs/HEAs), including duplex-phase and eutectic microstructures. A combination of composition-dependent formation energy and electronic-structure-based ordering parameters were used to identify a transition from FCC to BCC favoring mixtures, and these predictions experimentally validated in the Al-Co-Cr-Cu-Fe-Ni system. This work establishes a pathway for design and optimization of next-generation multiphase superalloys via tailoring of structural and chemical ordering in concentrated solid solutions.
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