Effect of Sintering Holding Time and Cooling Rate on the Austenite Stability and Mechanical Properties of Nanocrystalline FeCrC Alloy

• Autorzy: Kim Gwanghun , Jeon Junhyub , Seo Namhyuk , Choi Seunggyu , Oh Min-Suk , Son Seung Bae , Lee Seok-Jae

Identyfikatory

DOI

10.24425/amm.2021.136376

• Języki publikacji: EN

Abstrakty

EN

The effects of the sintering holding time and cooling rate on the microstructure and mechanical properties of nanocrystalline Fe-Cr-C alloy were investigated. Nanocrystalline Fe-1.5Cr-1C (wt.%) alloy was fabricated by mechanical alloying and spark plasma sintering. Different process conditions were applied to fabricate the sintered samples. The phase fraction and grain size were measured using X-ray powder diffraction and confirmed by electron backscatter diffraction. The stability and volume fraction of the austenite phase, which could affect the mechanical properties of the Fe-based alloy, were calculated using an empirical equation. The sample names consist of a number and a letter, which correspond to the holding time and cooling method, respectively. For the 0A, 0W, 10A, and 10W samples, the volume fraction was measured at 5.56, 44.95, 6.15, and 61.44 vol.%. To evaluate the mechanical properties, the hardness of 0A, 0W, 10A, and 10W samples were measured as 44.6, 63.1, 42.5, and 53.8 HRC. These results show that there is a difference in carbon diffusion and solubility depending on the sintering holding time and cooling rate.

Słowa kluczowe

EN

Fe-Cr-C alloy; sintering holding time; cooling rate; austenite stability; nanocrystalline

• 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: 2021
• Tom: Vol. 66, iss. 3
• Strony: 759--763
• Opis fizyczny: Bibliogr. 22 poz., rys., tab., wykr., wzory

Twórcy

autor

Kim Gwanghun

• Jeonbuk National University, Division of Advanced Materials Engineering, 567 Baekje-Daero, Deokjin-Gu, Jeonju, 54896, Republic of Korea

autor

Jeon Junhyub

• Jeonbuk National University, Division of Advanced Materials Engineering, 567 Baekje-Daero, Deokjin-Gu, Jeonju, 54896, Republic of Korea

autor

Seo Namhyuk

• Jeonbuk National University, Division of Advanced Materials Engineering, 567 Baekje-Daero, Deokjin-Gu, Jeonju, 54896, Republic of Korea

autor

Choi Seunggyu

• Jeonbuk National University, Division of Advanced Materials Engineering, 567 Baekje-Daero, Deokjin-Gu, Jeonju, 54896, Republic of Korea

autor

Oh Min-Suk

• Jeonbuk National University, Division of Advanced Materials Engineering, 567 Baekje-Daero, Deokjin-Gu, Jeonju, 54896, Republic of Korea

autor

Son Seung Bae

• Jeonbuk National University, Division of Advanced Materials Engineering, 567 Baekje-Daero, Deokjin-Gu, Jeonju, 54896, Republic of Korea

autor

Lee Seok-Jae

• Jeonbuk National University, Division of Advanced Materials Engineering, 567 Baekje-Daero, Deokjin-Gu, Jeonju, 54896, Republic of Korea

• https://orcid.org/0000-0003-2463-8706

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Uwagi

1. This work was supported by a Korea institute for Advancement of Technology grant, funded by the Korea Government (MOTIE) (P0002019), as part of the Competency Development Program for industry Specialists.

2. Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).