High strain rate behaviour of nano-quasicrystalline Al93Fe3Cr2Ti2 alloy and composites

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

卷:764

Article

Pedrazzini, S.¹  Galano, M.²  Audebert, F.^2,3,4  Siegkas, P.⁵  Gerlach, R.⁶  Tagarielli, V. L.⁷  Smith, G. D. W.² 

[1] Imperial Coll, Dept Mat, London SW7 2AZ, England

[2] Univ Oxford, Dept Mat, Parks Rd, Oxford OX1 3PH, England

[3] Univ Buenos Aires, Fac Ingn, CONICET, UBA,INTECIN,Adv Mat Grp, Paseo Colon 850, RA-1063 Buenos Aires, DF, Argentina

[4] Oxford Brookes Univ, Dept Mech Engn & Math Sci, Wheatley Campus, Oxford OX33 1HX, England

[5] Nottingham Trent Univ, Sch Sci & Technol, 50 Shakespeare St, Nottingham NG1 4FQ, England

[6] Univ Oxford, Dept Engn, Parks Rd, Oxford OX1 3PJ, England

[7] Imperial Coll London, Dept Aeronaut, London SW7 2AZ, England

关键词: Aluminium alloys;    Quasicrystals;    Dynamic testing;    Hopkinson bar;    Metal matrix composites;   

DOI  :  10.1016/j.msea.2019.138201

来源: Elsevier

【 摘 要 】

We demonstrate the outstanding dynamic strength of nano-quasicrystalline Al93Fe3Cr2Ti2 at.% alloy and composites. Unlike most crystalline Al alloys, this alloy exhibits substantial strain rate sensitivity and retains ductility at high strain rates. This opens new pathways for use in safety-critical materials requiring impact resistance.

【 授权许可】

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