Effect of laser deposition connecting angle on microstructure and tensile properties of GH4169 alloy
Source abstract
Abstract
Additive manufactured GH4169 alloy samples were connected by laser deposition manufacturing method in three forms considering directional columnar dendrites, and the effect of different crystal orientations on the connected samples’ microstructure and mechanical properties was investigated. Metallographic analysis shows that the laser deposition connecting (LDC) GH4169 alloy samples presented an obvious directional growth of columnar dendrites at both ends of the fusion line, and small-sized dendrites and equiaxed crystals appear at the fusion line. After heat treatment, the small-sized columnar dendrites were transformed into equiaxed crystals, and the microstructure was similar to that of the deposited state in other regions. The tensile test results show that the connecting properties varied with different connection angles. Heat treatment can modify the tensile properties significantly. The fracture locations of the connection were all in the weaker tensile zone, the parent material close to the fusion line, due to the different crystal orientations.Graphical abstractSet up of LDC angle and corresponding microstructure and mechanical properties
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Research context
OpenAlex topics: Additive Manufacturing Materials and Processes · High Entropy Alloys Studies · Aluminum Alloy Microstructure Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (33)
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