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Excellent specific ...
Excellent specific strength-ductility synergy in novel complex concentrated alloy after suction casting
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- Balpande, A. R. (författare)
- Indian Institute of Technology
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- Agrawal, S. (författare)
- Indian Institute of Science
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- Li, Xiaolong, 1991 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Suwas, S. (författare)
- Indian Institute of Science
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- Guo, Sheng, 1981 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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Ghosal, P. (författare)
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- Nene, S. S. (författare)
- Indian Institute of Technology
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(creator_code:org_t)
- 2024
- 2024
- Engelska.
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Ingår i: Materials and Design. - 1873-4197 .- 0264-1275. ; 242
- Relaterad länk:
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https://research.cha... (primary) (free)
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Lightweight alloys are known to improve the fuel efficiency of the structural components due to high strength-to-weight ratio, however, they lack formability at room temperature. This major limitation of poor formability is most of the time overcome by post-fabrication processing and treatments thereby increasing their cost exponentially. We present a novel Ti50V16Zr16Nb10Al5Mo3 (all in at. %) complex concentrated alloy (Ti-CCA) designed based on the combination of valence electron concentration theory and the high entropy approach. The optimal selection of constituent elements has led to a density of 5.63 gm/cc for Ti-CCA after suction casting (SC). SC Ti-CCA displayed exceptional room temperature strength (UTS ∼ 1.25 GPa) and ductility (ε ∼ 35 %) with a yield strength (YS) of ∼ 1.1 GPa (Specific YS = 191 MPa/gm/cc) without any post-processing treatments. The exceptional YS in Ti-CCA is attributed to hetero grain size microstructure, whereas enormous strength-ductility synergy is due to the concurrent occurrence of slip and deformation band formation in the early stages of deformation followed by prolonged necking event due to delayed void nucleation and growth. The proposed philosophy of Ti-CCA design overcomes the conventional notion of strength-ductility trade-off in such alloy systems by retaining their inherent characteristics.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Nyckelord
- Void formation
- Valence electron concentration
- Deformation bands
- Strength-ductility synergy
- Suction casting
- Complex concentrated alloy
- Specific strength
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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