Study on the Microstructure, Electrical and Mechanical Properties of Hot Pressing Cr-50 Mass% Ni Alloys Fabricated by Addition of Various Ratios of Nanosized Ni Powders

• Autorzy: Huang Jhong-Ren , Chang Shih-Hsien , Liao Cheng-Liang

Identyfikatory

DOI

10.24425/amm.2022.139688

• Języki publikacji: EN

Abstrakty

EN

In this work, nanosized Ni (nNi) powders of 50 nm are mixed with Cr and Ni submicron-powders (600 nm) to fabricate Cr-50 mass% Ni alloys by vacuum hot pressing. In order to evaluate the influence of the nanosized Ni powders, different amounts of nanosized Ni powders are added to produce the Cr-(50-x) mass% Ni-x mass% nNi alloys (x = 0, 10, 20, and 30). The hot pressing was maintained at 1275°C, 48 MPa for 1 h. The microstructure evaluation, mechanical, and electrical properties were performed. The results reveal that mechanical and electrical properties are enhanced when increasing the nNi addition. The Cr-20 mass% ­Ni-30 mass% nNi presents the highest relative density of 96.53% and the electrical conductivity of 2.18×10⁴ Scm^-1, moreover, the hardness and transverse rupture strength values increase to 76.1 HRA and 1217 MPa, respectively. Moreover, a more homogeneous microstructure and a decrease in the mean grain size to 3.15 μm are acquired. Significantly, this fabrication procedure (adding 30 mass% nanosized nickel powders) results in the optimal microstructure, electrical and mechanical properties of submicron-structured Cr-(50-x) mass% Ni-x mass% nNi alloys.

Słowa kluczowe

EN

electrical conductivity; hot pressing; transverse rupture strength; nanosized nickel powders; Cr-50 mass% Ni alloy

• 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: 2022
• Tom: Vol. 67, iss. 3
• Strony: 955--961
• Opis fizyczny: Bibliogr. 16 poz., fot., rys., wykr.

Twórcy

autor

Huang Jhong-Ren

• Tohoku University, Department of Metallurgy, Materials Science and Materials Processing, 6-6-04 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8579, Japan
• National Taiwan University of Science and Technology, Department of Chemical Engineering, Taipei 10607, Taiwan, ROC

• https://orcid.org/0000-0001-6807-0791

autor

Chang Shih-Hsien

• National Taipei University of Technology, Department of Materials and Mineral Resources Engineering, Taipei 10608, Taiwan, ROC

• https://orcid.org/0000-0002-8406-5631

autor

Liao Cheng-Liang

• National Taipei University of Technology, Department of Materials and Mineral Resources Engineering, Taipei 10608, Taiwan, ROC

• https://orcid.org/0000-0001-9974-7339

Bibliografia

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Uwagi

1. This research is supported by the ASSAB STEELS TAIWAN CO., LTD. The authors would like to express their appreciations for Dr. Harvard Chen.

2. Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).