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Sanxuan Han et al.
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Optics
Alireza Mirak et al.
Summary: In this research, the welding of Inconel 713 superalloy and high strength AISI 4140 steel using pulsed Nd:YAG laser was successfully carried out. The effect of heat input on the microstructural and mechanical properties of the weld was studied. It was found that the increase of heat input resulted in the formation of a coarse dendritic structure and a reduction in the hardness of the weld metal. The HAZ of the 4140 steel side showed the highest hardness due to the formation of martensitic microstructure, while the hardness in the HAZ of the Inconel 713 side remained relatively unchanged. The higher heat input led to the segregation of certain elements and the formation of brittle laves phase, which caused a decrease in the tensile strength of the weld. However, the weld joint exhibited the maximum tensile strength at a lower heat input.
OPTICS AND LASER TECHNOLOGY
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P. K. Mandal et al.
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Jian Cao et al.
Summary: The microstructure and formation mechanism of a strong DD3/Ti3AlC2 joint were investigated, with the role of Ni diffusion in creating a mixed phase zone at the Ti3AlC2 interface found to be significant.
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Yuanyi Peng et al.
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JOURNAL OF MANUFACTURING PROCESSES
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