Results are provided for a study of the additive formation of products from a high-tech heat-resistant alloy 2V of the Ti-Al-V system using deposition with a consumable melting electrode in a protective gas in a pulsed regime with a cold supply of material (CMT Advanced). Research shows that hybrid technology of multilayer CMT (Cold Metal Transfer) surfacing with layer-by-layer strain hardening makes it possible to use heat-resistant high-tech titanium alloys in order to prepare products of a given geometric shape. It is established that the different morphology of the structure of deposited layers is explained by different cooling rates in the crystallization stage and in the stage of solid state transformations: a basket- like structure is formed with a fast cooling rate, and a martensite-like plate structure is formed with slow cooling, represented by colonies of relatively parallel α-platelets. Different fineness is recorded for α-colony plates, i.e., from 200 to 500 μm, and the size of individual needles is from fractions of a micron to 100 μm. It has been established that forging makes it possible to increase deposited metal microhardness by no more than 5–7%, but the undoubted advantage of the CMT process with deformation is a significant reduction in deposited metal porosity.

中文翻译：

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CMT-堆焊技术在钛合金工件的增材成型中的应用

结果提供了对 Ti-Al-V 系统的高科技耐热合金 2V 产品的添加剂形成的研究，使用自耗熔化电极在保护气体中以脉冲方式沉积材料（CMT 高级）。研究表明，多层 CMT（冷金属转移）堆焊与逐层应变硬化的混合技术使得使用耐热高科技钛合金制备特定几何形状的产品成为可能。已确定沉积层结构的不同形态是由结晶阶段和固态转变阶段的不同冷却速度解释的：形成篮状结构，冷却速度快，马氏体状结构缓慢冷却形成板状结构，由相对平行的α-血小板集落表示。α-集落板记录了不同的细度，即从 200 到 500 μm，单个针的大小从几分之一微米到 100 μm。已经确定，锻造可以将熔敷金属显微硬度提高不超过 5-7%，但变形 CMT 工艺无疑的优势是显着降低熔敷金属孔隙率。