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On the Characterization of the Exceptional Fracture Toughness of CrMnFeCoNi High Entropy Alloy

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Hilhorst, Antoine [UCL] Pardoen, Thomas [UCL] Jacques, Pascal [UCL]

Previous studies showed that some High Entropy Alloys (HEAs), particularly the ones related to the CrMnFeCoNi system present an exceptional fracture toughness exceeding 200 MPa.m1/2. This value was measured using compact tension (CT) specimens in agreement with ASTM standards but failed the validity criteria. The present study proposes to evaluate the CrMnFeCoNi fracture toughness at room and cryogenic temperatures using the essential work of fracture (EWF) method well adapted for the a simple and efficient characterization of the plane-stress fracture toughness of thin sheets of ductile materials.

Document type Communication à un colloque (Conference Paper) – Poster
Access type Accès libre
Publication date 2019
Language Anglais
Conference "TMS 2019", San Antonio, Texas (du 10/03/2019 au 14/03/2019)
Affiliation UCL - SST/IMMC/IMAP - Materials and process engineering
Keywords High entropy alloy ; Essential work of fracture ; CrMnFeCoNi
Links
Bibliographic reference Hilhorst, Antoine ; Pardoen, Thomas ; Jacques, Pascal. On the Characterization of the Exceptional Fracture Toughness of CrMnFeCoNi High Entropy Alloy.TMS 2019 (San Antonio, Texas, du 10/03/2019 au 14/03/2019).
Permanent URL http://hdl.handle.net/2078.1/216292