Abstract Based on the cold metal transfer (CMT) technique, AZ91 thick-walled component was fabricated by weaving wire and arc additive manufacturing (WAAM). The results showed that the deposited sample consisted of equiaxed grains with different sizes, and the sample was mainly composed of α-Mg, β-Mg17Al12 and Al8Mn5 phases. The anisotropy of the ultimate tensile strength between the transverse and longitudinal tensile samples was 2.0%, and the fracture surfaces exhibited typical ductile fracture characteristics. The component fabricated by the CMT-based WAAM system has better performance than the traditional cast alloy.

中文翻译：

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冷金属转移增材制造AZ91镁合金的组织和力学性能

摘要 基于冷金属转移（CMT）技术，采用编织线和电弧增材制造（WAAM）技术制造了AZ91厚壁部件。结果表明，沉积样品由不同尺寸的等轴晶粒组成，样品主要由α-Mg、β-Mg17Al12和Al8Mn5相组成。横向和纵向拉伸试样的极限拉伸强度各向异性为2.0%，断裂面呈现典型的韧性断裂特征。由基于 CMT 的 WAAM 系统制造的组件比传统的铸造合金具有更好的性能。