In-situ strengthening of AZ31 magnesium alloy by introducing TC4 particles during wire-arc directed energy deposition with simultaneous feeding of powder and wire
Year: 2024
Type: article
Abstract: TC4 particles reinforced AZ31 composite was successfully prepared by innovatively using simultaneous feeding method of powder and wire in wire-arc directed energy deposition (WA-DED). The results indicated that TC4 particles are expected to be evenly distributed in the AZ31 matrix and the introduced TC4 particle content of 9%−33.43 wt% can be acquired by adjusting the turret speed (TS) of powder feeder. The coarse columnar grains in the AZ31 transforms into the equiaxed grains after adding TC4 particles. A large number of acicular/flake Mg-Al phase and partial granular Al-Mn phase are formed around TC4 particles. The excellent tensile properties with yield strength of 85.6 MPa, ultimate tensile strength of 195 MPa and tensile elongation of 7.1% are obtained at the TS of 5 rpm, the corresponding maximum improvement efficiency reaches up to 42.6%. The improved strength mainly derives from grain refinement strengthening and thermal mismatch strengthening.
Source: Virtual and Physical Prototyping
Institution: Beihang University
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,070
OpenAlex ID: W4401490228