Bimetallic structure of TZM and NbZr1 fabricated by wire-based directed energy deposition
Bimetallic structure of TZM and NbZr1 fabricated by wire-based directed energy deposition
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DOI：
10.1016/j.matlet.2023.135605
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发表时间：
2023-11
影响因子：
3
通讯作者：
Sainand Jadhav;Md Abdul Karim;Duck Bong Kim
中科院分区：
文献类型：
--
作者：
Sainand Jadhav;Md Abdul Karim;Duck Bong Kim
这项研究的结果强调了用耐火合金增材制造双金属结构用于高温应用的可行性。采用线基定向能量沉积（DED）工艺，成功制造了由钼合金（TZM）和铌合金（NbZr1）组成的双金属结构。 TZM-NbZr1 界面没有表现出明显的缺陷，例如裂纹或分层，并且不存在金属间化合物。在靠近界面的沉积 NbZr1 一侧观察到一些孔隙。在单轴拉伸试验中，试样的失效发生在靠近界面的 NbZr1 一侧，导致极限拉伸强度为 249 ± 126 MPa，伸长率小于 6%。
The outcome of this study highlights the feasibility of additively manufactured bimetallic structures from refractory alloys for high-temperature applications. Using a wire-based directed energy deposition (DED) process, a bimetallic structure composed of molybdenum alloy (TZM) and niobium alloy (NbZr1) was successfully fabricated. The TZM-NbZr1 interface displayed no significant defects, such as cracks or delamination, and showed no presence of intermetallic compounds. A few pores were observed on the deposited NbZr1 side near the interface. During uniaxial tensile testing, the specimen’s failure occurred on the NbZr1 side in close proximity to the interface, resulting in an ultimate tensile strength of 249 ± 126 MPa and an elongation of less than 6 %.