选区激光熔化Ti-6Al-4V合金不同取向的耐蚀性能研究

doi:10.11896/cldb.24080187

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Abstract Titanium alloy is extensively used in the medical field for human implants due to its exceptional physical properties and corrosion resistance. However, the corrosion resistance of different surface orientations in selective laser melted (SLM) Ti-6Al-4V alloy components has not been fully understood. This study aims to investigate the corrosion resistance of various surface orientations of SLM Ti-6Al-4V alloy after subjecting them to 800 ℃ for 2 h in simulated body fluid (SBF). The results show that the alloy samples exhibit an α+β phase structure. Notably, in SBF, the passivation film formed on the SLM-XY surface is thicker, denser, and less soluble than those on other orientations. Electrochemical analysis further reveals that the XY surface displays superior corrosion resistance compared to the XZ surface. This enhanced resistance is attributed to the higher content of the β phase and the presence of corrosion-resistant {0001}_α-oriented grains on the SLM-XY surface.

Key words： Ti-6Al-4V alloy selective laser melting corrosion resistance passivation film electrochemistry

Published: 10 October 2025 Online: 2025-09-24

CLC number:

TG172

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	Articles by authors
	FU Lei
	YANG Hang
	MOU Jieshuang
	JIAN Ke
	WANG Fuyou
	LIN Li
	ZHANG Qian

Cite this article:

FU Lei,YANG Hang,MOU Jieshuang, et al. The Study of Corrosion Resistance in Selective Laser Melted Ti-6Al-4V Alloy with Different Orientations[J]. Materials Reports, 2025, 39(19): 24080187-7.

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https://www.mater-rep.com/EN/10.11896/cldb.24080187 OR https://www.mater-rep.com/EN/Y2025/V39/I19/24080187

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