4.6 Article

Microstructural Characteristics and Material Failure Mechanism of SLM Ti-6Al-4V-Zn Alloy

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MATERIALS
卷 16, 期 23, 页码 -

出版社

MDPI
DOI: 10.3390/ma16237341

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Ti-6Al-4V; selective laser melting (SLM); mechanical properties; oxidation; phase transformation; particle erosion; 3D printing

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This study investigates the selective laser melting (SLM) technique to produce Ti-6Al-4V-Zn titanium alloy. The addition of 0.3 wt.% zinc is explored to improve the strength and ductility of SLM Ti-6Al-4V alloys. The results show that the specimen treated with a vacuum heat treatment process at 800-4-FC exhibits the most favorable overall mechanical properties. In addition, zinc acts as a stabilizing element for the beta phase, enhancing the erosion resistance and corrosion impedance of Ti-6Al-4V-Zn alloy. Furthermore, the incorporation of trace amounts of Zn improves the impact toughness and high-temperature tensile mechanical properties of SLM Ti-6Al-4V-Zn alloy.
This study focuses on the additive manufacturing technique of selective laser melting (SLM) to produce Ti-6Al-4V-Zn titanium alloy. The addition of zinc at 0.3 wt.% was investigated to improve the strength and ductility of SLM Ti-6Al-4V alloys. The microstructure and mechanical properties were analyzed using different vacuum heat treatment processes, with the 800-4-FC specimen exhibiting the most favorable overall mechanical properties. Additionally, zinc serves as a stabilizing element for the beta phase, enhancing the resistance to particle erosion and corrosion impedance of Ti-6Al-4V-Zn alloy. Furthermore, the incorporation of trace amounts of Zn imparts improved impact toughness and stabilized high-temperature tensile mechanical properties to SLM Ti-6Al-4V-Zn alloy. The data obtained serve as valuable references for the application of SLM-64Ti.

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