RETRACTED: Laser Welding of UNS S33207 Hyper-Duplex Stainless Steel to 6061 Aluminum Alloy Using High Entropy Alloy as a Filler Material

Abstract

The high entropy alloy (HEA) filler used during the fabrication method determines the reliability of HEAs for steel-aluminum dissimilar alloy configuration. HEAs have a direct impact on the formation of intermetallic compounds (IMC) formed by the interaction of iron (Fe) and aluminum (Al), and influence the size of the joint’s interaction zone. A novel welding process for Fe-Al alloy joints was developed to prevent the development of a brittle iron-aluminum interface. This research involved investigation of the possibility of using HEA powdered filler. Fe5Co20Ni20Mn35Cu20 HEAs was used as a filler for the laser joining lap configuration joining hyper-duplex stainless steel UNS S33207 to aluminum alloy 6061. This HEA has unique properties, such as high strength, good ductility, and high resistance to corrosion and wear. A tiny portion of the stainless-steel area was melted by varying the welding parameters. The high-entropy alloy (HEA) with slow kinetic diffusion and large entropy was employed to aid in producing solid solution structures, impeding the blending of iron and aluminum particles and hindering the development of Fe-Al IMCs. The weld seam was created without the use of Fe-Al IMCs,. The specimen broke at the HEAs/Al alloy interface with a tensile-shear strength of 237 MPa. The tensile-shear strength achieved was 12.86% higher than for the base metal AA 6061 and 75.57% lower than for the UNS S33207 hyper-duplex stainless steel.

Laser Cladding With Combined NIR and Blue Diode Laser Including In-Line Atomic Emission Spectroscopy

“…Due to the large number of available powder materials, the process can be used quite flexibly [7]. For instance, high entropy alloy powder can be used as filler material for lap joints with dissimilar alloy configuration [8]. In order to achieve consistent quality during DED processes, numerous monitoring and control methods have been developed.…”

Hyper Duplex Stainless Steels and Their Weldability

“…Mohan ve arkadaşları, yüksek entropi alaşımı (Fe5Co20Ni20Mn35Cu20) dolgu metali kullanarak S33207 HDSS ile 6061 sınıfı alüminyum malzemenin lazer kaynağı ile birleştirilebilirliğini araştırmıştır. Ara yüzeyde oluşan intermetalik faz katmanının kalınlığı, gerçekleşen faz dönüşümleri ve birleşme yüzeyinin genişliğinin yapılan kaynağın mekanik ve metalürjik özellikleri üzerinde baskın bir etkiye sahip olduğu ortaya konulmuştur [59].…”

The Effect of Resistance Spot Welding Parameters on Microstructure and Strength of DP800 Steel Joints Using Response Surface Methodology

“…RSM is also utilized to fit the empirical relationships to data obtained from the developed design matrix. The main idea of RSM is to develop an experimental design to attain an optimal condition of process parameters [26,27]. It is feasible to examine the interaction effect of process parameters on joint features and identify an optimal solution to get better outcomes using RSM approach [28].…”