Effect of Post-Heat Treatment on the Impact Toughness and Crack Propagation Mechanism of AISI D2 Tool Steel Manufactured by Direct Energy Deposition

• Autorzy: Park Jun-Hyung , Kim Kyu-Sik , Koo Yong-Mo , Kim Jin-Young , Kim Min-Chul , Lee Kee-Ahn

Identyfikatory

DOI

10.24425/amm.2023.141483

• Języki publikacji: EN

Abstrakty

EN

This study investigated the effect of heat treatment on the microstructure and impact toughness property of AISI D2 manufactured with direct energy deposition (DED) and compared the results with conventional wrought material. The fracture crack propagation behavior was examined in connection with microstructures through fracture surface analysis. AISI D2 manufactured with DED had a eutectic structure that turned into a net-type carbide after heat treatment, and Cr-rich needle-type secondary carbide was observed. Impact toughness of DED AISI D2 measured 2.0 J/cm² in the as-built sample and 1.1 J/cm² in the heat-treated sample. Compared to a wrought heat-treated AISI D2, DED AISI D2 had relatively low impact toughness. DED AISI D2 and wrought material had different crack propagation mechanisms. In DED AISI D2, the eutectic structure and net-type carbide boundary were identified as the major microstructural factor decreasing impact toughness.

Słowa kluczowe

EN

AISI D2 tool steel; direct energy deposition; post-heat treatment; impact toughness; fractography

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2023
• Tom: Vol. 68, iss. 1
• Strony: 119--122
• Opis fizyczny: Bibliogr. 13 poz., fot., rys.

Twórcy

autor

Park Jun-Hyung

• Inha University, Department of Materials Science and Engineering, Incheon 22212, Korea

• https://orcid.org/0000-0002-1947-0454

autor

Kim Kyu-Sik

• Inha University, Department of Materials Science and Engineering, Incheon 22212, Korea

• https://orcid.org/0000-0001-5649-8299

autor

Koo Yong-Mo

• Changsung Corp., Incheon, 21628, Korea

• https://orcid.org/0000-0003-4715-2979

autor

Kim Jin-Young

• Maxrotech Corp., Daegu, 42703, Korea

• https://orcid.org/0000-0001-5818-7021

autor

Kim Min-Chul

• Korea Atomic Energy Research Institute (KAERI), Daejeon 34057, Korea

autor

Lee Kee-Ahn

• Inha University, Department of Materials Science and Engineering, Incheon 22212, Korea

• https://orcid.org/0000-0003-2149-3871

Bibliografia

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Uwagi

1. This research was supported by the Ministry of Trade, Industry, and Energy (MOTIE) and Korea Evaluation Institute of Industrial Technology (KEIT) (No. 20011279).

2. Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).