Optimization of pitting corrosion resistance of TC4-30Zr alloy by laser surface remelting

X.J. Jiang; Y.G. Meng; J.T. Zhang; X.Y. Zhang; L.S. Jiao; H.B. Qi

Journal of Materials Research and Technology (Sep 2023)

Optimization of pitting corrosion resistance of TC4-30Zr alloy by laser surface remelting

X.J. Jiang,
Y.G. Meng,
J.T. Zhang,
X.Y. Zhang,
L.S. Jiao,
H.B. Qi

Affiliations

X.J. Jiang: Hebei Key Laboratory of Advanced Materials for Transportation Engineering and Environment, School of Materials Science and Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China; State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China; Corresponding author. School of materials science and Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China.
Y.G. Meng: Hebei Key Laboratory of Advanced Materials for Transportation Engineering and Environment, School of Materials Science and Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China
J.T. Zhang: Hebei Key Laboratory of Advanced Materials for Transportation Engineering and Environment, School of Materials Science and Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China
X.Y. Zhang: State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
L.S. Jiao: Hebei Key Laboratory of Material Near-net Forming Technology, School of Materials Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
H.B. Qi: Hebei Key Laboratory of Advanced Materials for Transportation Engineering and Environment, School of Materials Science and Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China

Journal volume & issue: Vol. 26
pp. 8879 – 8888

Abstract

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The effect of laser surface remelting (LSR) on pitting corrosion behavior of TC4-30Zr alloy was investigated. The results showed that the α/α′ phase was transformed into β phase after LSR. The grain was refined and the (110) crystal plane texture was produced. At the same time, nano-twins appeared. The content of TiO2 and ZrO2 in the passivation film increased, and the thickness of the passivation film increased by 4.12 times. The generation of (110) crystal plane texture and nano-twins reduced the pitting sensitivity by reducing the surface energy and increasing the vacancy density of the passivation film.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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