Microstructure, Mechanical, and Corrosion Properties of Ni-Free Austenitic Stainless Steel Prepared by Mechanical Alloying and HIPping

Romanczuk, Eliza; Perkowski, Krzysztof; Oksiuta, Zbigniew

doi:10.3390/ma12203416

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Microstructure, Mechanical, and Corrosion Properties of Ni-Free Austenitic Stainless Steel Prepared by Mechanical Alloying and HIPping

Eliza Romanczuk

^1,*

Krzysztof Perkowski

² and

Zbigniew Oksiuta

Faculty of Mechanical Engineering, Bialystok University of Technology, 15-351 Bialystok, Poland

Institute of Ceramics and Building Materials, 02-676 Warsaw, Poland

Author to whom correspondence should be addressed.

Materials 2019, 12(20), 3416; https://doi.org/10.3390/ma12203416

Received: 10 August 2019 / Revised: 11 October 2019 / Accepted: 14 October 2019 / Published: 18 October 2019

(This article belongs to the Section Biomaterials)

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Abstract

An influence of the powder metallurgy route on the phase structure, mechanical properties, and corrosion resistance of Fe–18%Cr–12%Mn–N nickel-free austenitic stainless steel as a potential material for medical applications were studied. The powder was mechanically alloyed in a high purity nitrogen atmosphere for 90 h followed by Hot Isostatic Pressing at 1150 °C (1423 K) and heat treatment at 1175 °C (1423 K) for 1 h in a vacuum with furnace cooling and water quenching. More than 96% of theoretical density was obtained for the samples after Hot Isostatic Pressing that had a direct influence on the tensile strength of the tested samples (Ultimate Tensile Strength is 935 MPa) with the total elongation of 0.5%. Heat treatment did not affect the tensile strength of the tested material, however, an elongation was improved by up to 3.5%. Corrosion properties of the tested austenitic stainless steel in various stages of the manufacturing process were evaluated applying the anodic polarization measurements and compared with the austenitic 316LV stainless steel. In general, the heat treatment applied after Hot Isostatic Pressing improved the corrosion resistance. The Hot Isostatic Pressing sample shows dissolution, while heat treatment causes a passivity range, the noblest corrosion potential, and lower current density of this sample. View Full-Text

Keywords: nickel free austenitic stainless steel; mechanical alloying; Hot Isostatic Pressing; mechanical properties; corrosion resistance

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Romanczuk, E.; Perkowski, K.; Oksiuta, Z. Microstructure, Mechanical, and Corrosion Properties of Ni-Free Austenitic Stainless Steel Prepared by Mechanical Alloying and HIPping. Materials 2019, 12, 3416. https://doi.org/10.3390/ma12203416

AMA Style

Romanczuk E, Perkowski K, Oksiuta Z. Microstructure, Mechanical, and Corrosion Properties of Ni-Free Austenitic Stainless Steel Prepared by Mechanical Alloying and HIPping. Materials. 2019; 12(20):3416. https://doi.org/10.3390/ma12203416

Chicago/Turabian Style

Romanczuk, Eliza, Krzysztof Perkowski, and Zbigniew Oksiuta. 2019. "Microstructure, Mechanical, and Corrosion Properties of Ni-Free Austenitic Stainless Steel Prepared by Mechanical Alloying and HIPping" Materials 12, no. 20: 3416. https://doi.org/10.3390/ma12203416

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Microstructure, Mechanical, and Corrosion Properties of Ni-Free Austenitic Stainless Steel Prepared by Mechanical Alloying and HIPping

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