Mechanical Properties and Microstructure of Pure Titanium through Adding Trace Ti-6Al-4V Powder in SLM Manufacturing

doi:10.13701/j.cnki.kqyxyj.2024.08.006

Abstract

Abstract: Objective: To investigate the mechanical properties of pure titanium by adding trace Ti-6Al-4V powder in SLM printing manufacturing at two different heat treatment temperatures (650 ℃,2 h and 700 ℃,2 h) and different scanning speeds (1000 mm/s and 500 mm/s). Methods: SLM samples with two different scanning speed (GA:1000 mm/s,GB:500 mm/s) were prepared and heat treated with 650 ℃,2 h (HT1) and 700 ℃,2 h (HT2). The mechanical properties of the materials were tested, and the fracture morphology and microstructure were observed with LSCM and SEM. Results: The tensile strength of SLM printed pure titanium samples was higher at 1000 mm/s(>20%), and the elongation was higher at 500 mm/s. Consistent annealing revealed that the 650 ℃, 2 h treatment yielded outstanding mechanical performance at both scanning speeds. Conclusion: SLM-ed pure titanium material by adding trace Ti-6Al-4V powder can better meet the requirements of oral restorations compared to SLM-ed Ti-6Al-4V alloy.

Key words: selective laser melting, additive manufacturing, denture framework, mechanical properties, titanium, Ti-6Al-4V, alloy, heat treatment

SAIMI·Ayisen, HE Junjie, ZHANG Wenna, LUO Xiaoping. Mechanical Properties and Microstructure of Pure Titanium through Adding Trace Ti-6Al-4V Powder in SLM Manufacturing[J]. Journal of Oral Science Research, 2024, 40(8): 693-699.

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