High-entropy Al0.3CoCrFeNi alloy fibers with high tensile strength and ductility at ambient and cryogenic temperatures
Dongyue Li,Chengxin Li,Tao Feng,Yidong Zhang,Gang Sha,John J. Lewandowski,Peter K. Liaw,Yong Zhang +7 more
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TLDR
In this paper, high-entropy alloys (HEAs) are multi-component systems based on novel alloy composition designs with entropy maximization They feature an array of unique mechanical properties when compared with traditional alloys.About:
This article is published in Acta Materialia.The article was published on 2017-01-15 and is currently open access. It has received 342 citations till now. The article focuses on the topics: Ductility & Ultimate tensile strength.read more
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Science and technology in high-entropy alloys
TL;DR: In this article, the authors review the recent development of high-entropy alloys and summarize their preparation methods, composition design, phase formation and microstructures, various properties, and modeling and simulation calculations.
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Mechanical behavior of high-entropy alloys
TL;DR: In this article, the authors present a comprehensive, critical review of the mechanical behavior of high-entropy alloys and some closely related topics, including thermodynamics and kinetics.
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High-content ductile coherent nanoprecipitates achieve ultrastrong high-entropy alloys
Yao-Jian Liang,L. Wang,Yuren Wen,Cheng Baoyuan,Qinli Wu,Tangqing Cao,Qian Xiao,Yunfei Xue,Gang Sha,Yandong Wang,Yang Ren,Xiaoyan Li,Lu Wang,Fuchi Wang,Hongnian Cai +14 more
TL;DR: A non-equiatomic alloy is developed that utilizes spinodal decomposition in a five-element alloy to obtain high content nanophases and the highest tensile strength reported to date.
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Dynamically reinforced heterogeneous grain structure prolongs ductility in a medium-entropy alloy with gigapascal yield strength
TL;DR: A three-level heterogeneous grain structure with grain sizes spanning the nanometer to micrometer range, imparting a high yield strength well in excess of 1 GPa leads to a sustainable strain hardening rate, a record-wide hysteresis loop in load−unload−reload stress−strain curve and hence high back stresses.
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Outstanding tensile properties of a precipitation-strengthened FeCoNiCrTi0.2 high-entropy alloy at room and cryogenic temperatures
Yang Tong,Da Chen,Bin Han,Bin Han,Jun-Wei Wang,Rui Feng,Tao Yang,C. Zhao,Yilu Zhao,Wei Guo,Yasuo Shimizu,C.T. Liu,Peter K. Liaw,Koji Inoue,Yasuyoshi Nagai,Alice Hu,Ji-Jung Kai +16 more
TL;DR: In this article, a precipitation-strengthened FeCoNiCrTi0.2 high-entropy alloy strengthened by two types of coherent nano-precipitates but with the same composition was fabricated, and its tensile properties at room and cryogenic temperatures (77 K) and the corresponding defect-structure evolution were investigated.
References
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Nanostructured High-Entropy Alloys with Multiple Principal Elements: Novel Alloy Design Concepts and Outcomes
Jien-Wei Yeh,Swe-Kai Chen,Su-Jien Lin,Jon-Yiew Gan,Tsung-Shune Chin,Tsung-Shune Chin,Tao-Tsung Shun,Chun-Huei Tsau,Shou-Yi Chang +8 more
TL;DR: A new approach for the design of alloys is presented in this paper, where high-entropy alloys with multi-principal elements were synthesized using well-developed processing technologies.
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Microstructural development in equiatomic multicomponent alloys
Brian Cantor,Brian Cantor,I.T.H. Chang,I.T.H. Chang,P. Knight,P. Knight,A.J.B. Vincent,A.J.B. Vincent +7 more
TL;DR: In this paper, it was shown that the confusion principle does not apply, and other factors are more important in promoting glass formation of late transition metal rich multicomponent alloys.
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Microstructures and properties of high-entropy alloys
TL;DR: The concept of high entropy introduces a new path of developing advanced materials with unique properties, which cannot be achieved by the conventional micro-alloying approach based on only one dominant element as mentioned in this paper.
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A fracture-resistant high-entropy alloy for cryogenic applications
Bernd Gludovatz,Anton Hohenwarter,Dhiraj Catoor,Edwin H. Chang,Easo P. George,Easo P. George,Robert O. Ritchie,Robert O. Ritchie +7 more
TL;DR: This work examined a five-element high-entropy alloy, CrMnFeCoNi, which forms a single-phase face-centered cubic solid solution, and found it to have exceptional damage tolerance with tensile strengths above 1 GPa and fracture toughness values exceeding 200 MPa·m1/2.
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Metastable high-entropy dual-phase alloys overcome the strength–ductility trade-off
TL;DR: In this metastability-engineering strategy, a transformation-induced plasticity-assisted, dual-phase high-entropy alloy (TRIP-DP-HEA) is designed, which combines the best of two worlds: extensive hardening due to the decreased phase stability known from advanced steels and massive solid-solution strengthening of high-ENTropy alloys.