研究目的
To study the possibility of forming the α+β - phase in samples of titanium alloy Ti-6Al-4V without cooling rate control or heat treatment in as-deposited state obtained with oscillation of laser radiation or in samples without it.
研究成果
The use of laser radiation oscillation in direct laser deposition allows the formation of the α+β phase in Ti-6Al-4V alloy samples in the as-deposited state without heat treatment, achieving a β-phase content of up to 6%. This results in improved mechanical properties, including higher tensile strength and relative elongation compared to standard values.
研究不足
The study is limited to the analysis of Ti-6Al-4V alloy samples produced by direct laser deposition with and without oscillation of laser radiation. The effects of other parameters or materials were not explored.
1：Experimental Design and Method Selection:
Direct laser deposition was used to produce samples from Ti-6Al-4V alloy with and without oscillation of laser radiation.
2：Sample Selection and Data Sources:
Two groups of samples were studied, one with oscillation of laser radiation and one without.
3：List of Experimental Equipment and Materials:
Laser complex for direct metal deposition based on fiber laser LS-5, Dron-4 X-ray diffractometer, DMI 5000 microscope, FM-310 micro hardness tester, Zwick unit model Roell Z100 for mechanical tests.
4：Experimental Procedures and Operational Workflow:
Samples were produced under specific modes including power, laser rate, powder rate, layer height, and laser beam diameter. X-ray diffraction and metallographic studies were conducted.
5：Data Analysis Methods:
X-ray phase analysis was used to determine the phase composition, and mechanical tests were conducted to assess strength and elongation.
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