Master curve fracture toughness characterization of EuroFer97 using miniature multi-notch bend bar specimens for fusion applications1

Xiang Chen; Mikhail A. Sokolov; Yutai Katoh; Michael Rieth; Logan N. Clowers

doi:10.1115/PVP201885065

Master curve fracture toughness characterization of EuroFer97 using miniature multi-notch bend bar specimens for fusion applications¹

Xiang Chen, Mikhail A. Sokolov, Yutai Katoh, Michael Rieth, Logan N. Clowers

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

4 Scopus citations

Abstract

Eurofer97 is one of leading candidates of reduced activation ferritic martensitic (RAFM) steels for first wall structural materials of early demonstration fusion power plants. During fusion plant operation, high neutron irradiation damage on first wall materials can cause irradiation embrittlement and reduce the fracture toughness of RAFM steels. Therefore, it is critical to select proper testing techniques to characterize the fracture toughness of RAFM steels with high fidelity. In this manuscript, we present the feasibility study of using precracked miniature multi-notch bend bar specimens (M4CVN) with a dimension of 45mm (length) x 3.3mm (width) x 1.65mm (thickness) to characterize the transition fracture toughness of Eurofer97 steel based on the ASTM E1921 Master Curve method. The testing yielded a provisional Master Curve reference temperature ToQ of -89°C of unirradiated Eurofer97 steel heat J362A in the normalized and tempered condition. The results are within the normal scatter range of Master Curve reference temperature T0 for Eurofer97 steel, indicating suitability of applying M4CVN specimens for characterizing the transition fracture toughness of Eurofer97 steel.

Original language	English
Title of host publication	Codes and Standards
Publisher	American Society of Mechanical Engineers (ASME)
ISBN (Electronic)	9780791851586
DOIs	https://doi.org/10.1115/PVP201885065
State	Published - 2018
Event	ASME 2018 Pressure Vessels and Piping Conference, PVP 2018 - Prague, Czech Republic Duration: Jul 15 2018 → Jul 20 2018

Publication series

Name	American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume	1A-2018
ISSN (Print)	0277-027X

Conference

Conference	ASME 2018 Pressure Vessels and Piping Conference, PVP 2018
Country/Territory	Czech Republic
City	Prague
Period	07/15/18 → 07/20/18

Bibliographical note

Publisher Copyright:
Copyright © 2018 ASME.

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This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1115/PVP201885065

Cite this

Chen, X., Sokolov, M. A., Katoh, Y., Rieth, M., & Clowers, L. N. (2018). Master curve fracture toughness characterization of EuroFer97 using miniature multi-notch bend bar specimens for fusion applications¹ In Codes and Standards (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 1A-2018). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/PVP201885065

Chen, Xiang ; Sokolov, Mikhail A. ; Katoh, Yutai et al. / Master curve fracture toughness characterization of EuroFer97 using miniature multi-notch bend bar specimens for fusion applications¹ Codes and Standards. American Society of Mechanical Engineers (ASME), 2018. (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP).

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title = "Master curve fracture toughness characterization of EuroFer97 using miniature multi-notch bend bar specimens for fusion applications1 ",

abstract = "Eurofer97 is one of leading candidates of reduced activation ferritic martensitic (RAFM) steels for first wall structural materials of early demonstration fusion power plants. During fusion plant operation, high neutron irradiation damage on first wall materials can cause irradiation embrittlement and reduce the fracture toughness of RAFM steels. Therefore, it is critical to select proper testing techniques to characterize the fracture toughness of RAFM steels with high fidelity. In this manuscript, we present the feasibility study of using precracked miniature multi-notch bend bar specimens (M4CVN) with a dimension of 45mm (length) x 3.3mm (width) x 1.65mm (thickness) to characterize the transition fracture toughness of Eurofer97 steel based on the ASTM E1921 Master Curve method. The testing yielded a provisional Master Curve reference temperature ToQ of -89°C of unirradiated Eurofer97 steel heat J362A in the normalized and tempered condition. The results are within the normal scatter range of Master Curve reference temperature T0 for Eurofer97 steel, indicating suitability of applying M4CVN specimens for characterizing the transition fracture toughness of Eurofer97 steel.",

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Chen, X , Sokolov, MA , Katoh, Y, Rieth, M & Clowers, LN 2018, Master curve fracture toughness characterization of EuroFer97 using miniature multi-notch bend bar specimens for fusion applications¹ in Codes and Standards. American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, vol. 1A-2018, American Society of Mechanical Engineers (ASME), ASME 2018 Pressure Vessels and Piping Conference, PVP 2018, Prague, Czech Republic, 07/15/18. https://doi.org/10.1115/PVP201885065

Master curve fracture toughness characterization of EuroFer97 using miniature multi-notch bend bar specimens for fusion applications¹ . / Chen, Xiang ; Sokolov, Mikhail A.; Katoh, Yutai et al.
Codes and Standards. American Society of Mechanical Engineers (ASME), 2018. (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 1A-2018).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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Chen X , Sokolov MA , Katoh Y, Rieth M, Clowers LN. Master curve fracture toughness characterization of EuroFer97 using miniature multi-notch bend bar specimens for fusion applications¹ In Codes and Standards. American Society of Mechanical Engineers (ASME). 2018. (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP). doi: 10.1115/PVP201885065