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Volumn 345, Issue 6201, 2014, Pages 1153-1158

A fracture-resistant high-entropy alloy for cryogenic applications

Author keywords

[No Author keywords available]

Indexed keywords

ALLOY;

EID: 84907226114     PISSN: 00368075     EISSN: 10959203     Source Type: Journal    
DOI: 10.1126/science.1254581     Document Type: Article
Times cited : (4810)

References (55)
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    • F. Otto et al., Acta Mater. 61, 5743-5755 (2013).
    • (2013) Acta Mater. , vol.61 , pp. 5743-5755
    • Otto, F.1
  • 11
    • 84855502585 scopus 로고    scopus 로고
    • See supplementary materials on
    • See supplementary materials on Science Online.
    • Science Online
  • 12
    • 84928804159 scopus 로고    scopus 로고
    • note
    • As a preliminary estimate of the fracture resistance, the area under the load displacement curve of a tensile test was used to compute the fracture energy (sometimes termed the work to fracture), which was calculated from this area divided by twice the area of the crack surface.
  • 14
    • 84928804144 scopus 로고    scopus 로고
    • note
    • KQ values refer to fracture toughnesses that are not necessarily valid by ASTM standards (i.e., they do not meet the J-validity and/or plane strain conditions). Consequently, these toughnesses are likely to be inflated relative to truly valid numbers and are size- and geometry-dependent; they are not strictly material parameters. When comparing these values to the toughnesses measured in this study for CoCrFeMnNi, it is important to note that all values determined here for the high-entropy alloy were strictly valid, meeting ASTM standards for both J validity and plane strain.
  • 16
    • 84879490382 scopus 로고    scopus 로고
    • S. Rosinski, M. Grossbeck, T. Allen, A. Kumar, Eds. ASTM International, West Conshohocken, PA
    • M. Sokolov et al., in Effects of Radiation on Materials: 20th International Symposium, S. Rosinski, M. Grossbeck, T. Allen, A. Kumar, Eds. (ASTM International, West Conshohocken, PA, 2001), pp. 125-147.
    • (2001) Effects of Radiation on Materials: 20th International Symposium , pp. 125-147
    • Sokolov, M.1
  • 20
    • 84928781579 scopus 로고    scopus 로고
    • note
    • Note that despite the uncertainty in the (valid) toughness values for the stainless and high Ni steels, their upper toughness range could possibly be higher than the current measurements for the CrMnFeCoNi alloy. It must be remembered, however, that these materials are microalloyed and highly tuned with respect to grain size/orientation, tempering, precipitation hardening, etc., to achieve their mechanical properties, whereas the current CrMnFeCoNi alloy is a single-phase material that undoubtedly can be further improved through second-phase additions and grain control.
  • 27
    • 84928793099 scopus 로고    scopus 로고
    • note
    • Details of the critical strain model for ductile fracture (25, 26) and the method of estimating the fracture toughness are described in the supplementary materials.
  • 49
    • 0003648660 scopus 로고    scopus 로고
    • M. F. Ashby, Ed. Butterworth-Heinemann, Oxford, ed. 4
    • M. F. Ashby, in Materials Selection in Mechanical Design, M. F. Ashby, Ed. (Butterworth-Heinemann, Oxford, ed. 4, 2011), pp. 31-56.
    • (2011) Materials Selection in Mechanical Design , pp. 31-56
    • Ashby, M.F.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.