The cold metal transfer (CMT) process, one of wire and arc additive manufacturing, was utilized to fabricate 316L stainless steel. As-built CMT 316L consists of austenitic coarse columnar grains aligned with depositing direction mainly and tiny areas of scattered ferrite (less than 5%) in dendrite. For comparison purposes, both as-built CMT 316L and annealed wrought 316L were dynamically characterized by Split-Hopkinson Pressure Bar. CMT 316L owns a nearly isotropic characteristic in dynamic compressions. Compared to wrought material, dynamic yield strength and flow stress for the CMT 316L are higher at small strains (below 10%) due to the special cellar structure in matrix but drop lower when the strain was larger than 10% for effect of twinning induced plasticity. Last but not least microstructural characterizations from a series of dynamic compressions of CMT 316L show that average twin thickness reaches maximum at strain rates about 1000–1500 s⁻¹ and followed decreases with the increase of strain rates.

金属丝和电弧增材制造之一的冷金属转移（CMT）工艺用于制造316L不锈钢。竣工的CMT 316L由奥氏体粗大柱状晶粒组成，其主要与沉积方向对齐，并且在枝晶中散布着细小的铁素体区域（小于5％）。为了进行比较，使用Split-Hopkinson压力棒动态表征了建成的CMT 316L和退火的锻造316L。CMT 316L在动态压缩中具有几乎各向同性的特征。与变形材料相比，CMT 316L的动态屈服强度和流动应力在小应变时（低于10％）较高，这是由于基体具有特殊的酒窖结构，而当应变大于10％时，由于孪生诱导的塑性效应，CMT 316L的动态屈服强度和流动应力降低了。^-1和随后随着应变率的增加而降低。