Device and method for follow-up ultrasonic-assisted direct laser deposition of ceramic reinforced metal matrix composite material
A laser deposition, ultrasonic-assisted technology, applied in the field of additive manufacturing, can solve the problems of inconsistent tissue distribution and uneven stress distribution, and achieve the effects of high utilization, uniformity, and consistency.
Active Publication Date: 2019-11-22
DALIAN UNIV OF TECH
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The invention provides a device and a method for follow-up ultrasonic-assisted direct laser deposition of a ceramic reinforced metal matrix composite material, and belongs to the technical field of additive manufacturing. The method comprises the step of adopting a positioning clamping device to keep an ultrasonic impact gun following a coaxial powder feeding nozzle. In the process of direct laserdeposition of the ceramic reinforced metal matrix composite material, ultrasonic cavitation, acoustic streaming, mechanical and thermal effects are utilized to intervene the solidification behavior of a molten pool in real time, and the localized impact strengthening effect of ultrasonic impact is used to control the stress in real time. Compared with the forming method of direct laser deposition, the method can effectively reduce pores inside a sample, and ensure the consistency of the solidified structure and the uniformity of the stress distribution. At the same time, the method has a highutilization rate of ultrasonic energy, and can realize ultrasonic intervention in the forming process of large components.
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