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<p>One of the promising additive manufacturing (AM) processes to produce metallic parts is direct metal laser sintering (DMLS). This study examines the characteristics of sandwich specimen (SWS) made of aluminum alloys (Al7075 + AlSi10Mg) using the PBF technique. The AlSi10Mg was deposited on the Al7075 sample to fabricate AlSi10Mg/Al7075 by the Powder Bed Fusion method. The mechanical and metallurgical properties of DMLS printed Al7075, AlSi10Mg and SWS of AlSi10Mg/Al7075 were examined. The tensile characteristics, including percentage elongation and tensile strength of Al7075, AlSi10Mg and SWS (Al7075 extended AlSi10Mg) were compared. The ultimate tensile strength of SWS is increased compared with Al7075 specimen and Young’s modulus range for the Al7075, AlSi10Mg and SWS sample were found to be 76.22, 67.25 and 77.6&#xa0;MPa. The results demonstrated that in comparison with individual Al7075 and AlSi10Mg specimens, the SWS exhibited the maximum density values. Additionally, the microhardness of the SWS was determined to be 131.1 HV, which gives value greater than the hardness of the individual Al7075 and AlSi10Mg specimen. The texture component and grain boundary analysis in the SWS along the make direction during DMLS were studied using electron backscattered diffraction (EBSD) analysis.</p>

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Microstructural Characterization and Mechanical Behavior of Sandwiched Alloy of Al7075 and AlSi10Mg Produced through Direct Metal Laser Sintering

  • 期刊论文

  • 发表日期：

    2025年6月10日

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  • S. Karthi,
  • V. Senthilkumar,
  • C. Velmurugan

摘要

One of the promising additive manufacturing (AM) processes to produce metallic parts is direct metal laser sintering (DMLS). This study examines the characteristics of sandwich specimen (SWS) made of aluminum alloys (Al7075 + AlSi10Mg) using the PBF technique. The AlSi10Mg was deposited on the Al7075 sample to fabricate AlSi10Mg/Al7075 by the Powder Bed Fusion method. The mechanical and metallurgical properties of DMLS printed Al7075, AlSi10Mg and SWS of AlSi10Mg/Al7075 were examined. The tensile characteristics, including percentage elongation and tensile strength of Al7075, AlSi10Mg and SWS (Al7075 extended AlSi10Mg) were compared. The ultimate tensile strength of SWS is increased compared with Al7075 specimen and Young’s modulus range for the Al7075, AlSi10Mg and SWS sample were found to be 76.22, 67.25 and 77.6 MPa. The results demonstrated that in comparison with individual Al7075 and AlSi10Mg specimens, the SWS exhibited the maximum density values. Additionally, the microhardness of the SWS was determined to be 131.1 HV, which gives value greater than the hardness of the individual Al7075 and AlSi10Mg specimen. The texture component and grain boundary analysis in the SWS along the make direction during DMLS were studied using electron backscattered diffraction (EBSD) analysis.