所属单位：冶金工程学院

发表刊物：Metals

关键字：Molybdenum–rhenium alloy; Single-mode fiber laser; X-ray photoelectron spectrometer; Electron backscattered diffraction

摘要：Due to its high thermal conductivity and favorable machinability, molybdenum–rhenium (Mo–Re) alloys have huge prospects in the field of high-temperature heat pipes. However, the weldability of Mo–Re alloys has not yet been systematically investigated. Based on an orthogonal test, the influence law of the single-mode fiber laser welding parameters on the weld profile and the mechanical properties of the joints was studied. urthermore, the existence mode and the distribution law of Re in the fusion zone (FZ) were explored using X-ray photoelectron spectrometer (XPS) and the electron backscattered diffraction (EBSD) system. The results showed that weld penetration and width are most significantly influenced by power, and that these increased with increasing power. The tensile strength of the Mo–Re alloy joints reached 250 MPa, and no obvious hardening was found in the FZ. Re in the FZ also appeared as ReO2, ReO3, and ReC, apart from the atomic state.

合写作者：张林杰

第一作者：张亮亮

论文类型：期刊论文

通讯作者：杨庆节

卷号：12：841

是否译文：否

发表时间：2022-05-13