电弧增材制造TC4钛合金不同扫描策略初生β晶粒宏观形态演变

Effects of different deposition strategies on prior-β grain morphology by wire and arc additive manufactured Ti-6Al-4V components

摘要:

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Abstract:

Macrostructural characterisation was performed for Ti-6Al-4V components produced by wire and arc additive manufacturing (WAAM) to investigate the effects of different deposition direction and interlayer dwell time on grain morphology of prior-β. By extending the interlayer dwell time between each deposited layer, the full equiaxed β grain were obtained. The results indicated that the equiaxed β grains at the bottom were caused by recrystallization. The sizes of the equiaxed β grains at the bottom were both affected by the thermal cycle and the degree of recrystallization.