This study by Prabhakaran B. et al. explores the production of high-strength low-alloy (HSLA) steel components using Cold Metal Transfer (CMT) with Wire Arc Additive Manufacturing (WAAM). With a high deposition rate of approximately 4 kg/hour, WAAM is gaining attention compared to powder-based additive manufacturing techniques. The study is particularly relevant for industrial applications such as pressure vessels in maritime, offshore structures, and space programs.

Findings:

Microstructural Analyses:

Microscopic and diffraction techniques revealed different characteristics in the upper and lower regions of the samples.

Both regions consisted of acicular ferrite, polygonal ferrite, and bainite structures.

Mechanical Properties:

The lower region demonstrated superior mechanical properties compared to the upper region.

This was attributed to the formation of denser dislocations and finer grains in the lower region.

The study also evaluated the microstructural effects on properties such as material strength, microhardness, and fracture elongation.

The study highlights the enhanced mechanical and metallurgical properties of HSLA steel components produced via CMT-WAAM, emphasizing their potential for industrial applications in sectors requiring high-strength materials.

For a detailed review, you can access the related study here.

Vivek Mishra's review article focuses on the production of high-quality metallic components from Inconel 625 alloy using Wire Arc Additive Manufacturing (WAAM) technology. The study highlights WAAM process parameters, equipment, and the mechanical and metallurgical properties of Inconel 625.

The article discusses current research findings on the production of Inconel 625 with WAAM, the challenges encountered, and potential future research directions for improving its properties.

For a detailed review, you can access the related study here

This study by Tonyali, B et al. investigates the spatial customization of the coefficient of thermal expansion (CTE) in functionally graded materials (FGM) through composition and phase control. Specifically, the potential for reducing CTE by adding Ti-6Al-4V to Al 2219 aluminum alloy was evaluated.

Sample Preparation and Methods:

Samples were produced using the Directed Energy Deposition (DED) method.

Compositions were designed with 10% increments between 100 weight% Al 2219 and 70 weight% Al 2219 (balance Ti-6Al-4V).

Thermodynamic and Microstructure Analyses:

Thermodynamic simulations were used for phase predictions, while homogenization methods were used for CTE predictions.

Experimental analyses identified Al2Cu and fcc phases in all samples, and aluminides were found in samples containing Ti-6Al-4V.

Thermal Mechanical Properties:

The CTE values of the samples were measured through thermomechanical analysis, and these values were found to be consistent with the CTE predictions from homogenization methods.

This study demonstrates that material properties can be predicted and optimized using compositional modifications, thermodynamic calculations, and homogenization methods.

For a detailed review, you can access the related study here.

Yuhua Li et al. conducted a study examining the transformative potential of additive manufacturing (AM) in the production of biomedical metals and implants. The study systematically evaluates the properties of load-bearing biomedical alloys, biodegradable alloys, innovative metals, and 4D printing, focusing on facilitating material selection for medical applications.

Use of Additive Manufacturing in Medical Fields:

The applications of AM in various medical specialties such as orthopedics, dentistry, cardiology, and neurosurgery were explored. This technology shows great potential for solving complex clinical issues and advancing patient-centered healthcare solutions.

Surface Modification and Artificial Intelligence Applications:

The study discusses the use of cutting-edge artificial intelligence technologies in the AM process and innovations in surface functional modifications.

Future Perspectives:

The study emphasizes the critical role of AM in the development of personalized, high-performance medical devices for medical implant manufacturing, highlighting a promising future aimed at improving patient treatment outcomes and quality of life.

For a detailed review, you can access the related study here.

This study by Gürol U et al. investigates the production of multi-material metallic parts using robotic welding-based Wire Arc Additive Manufacturing (WAAM) technology. WAAM is an innovative additive manufacturing technology that offers faster, more cost-effective, and complex 3D part production compared to traditional subtractive manufacturing methods.

Industrial Applications:

WAAM is applied in the production of various products in the defense, aerospace, and automotive industries.

Study Details:

In this study, ferritic ER 70 S-6 and stainless steel ER316L welding wires were combined using robotic WAAM technology to produce multi-material components.

Microstructural and Mechanical Properties:

Microstructural analyses and hardness tests thoroughly examined the interfaces between the two materials.

In the Fe-austenite weld interfaces, the presence of hardened phases was detected due to the migration of hardening elements.

Microhardness tests showed that the highest hardness values were recorded at the interface of the two metals, attributed to the migration of Fe and C.

This study demonstrates that multi-material components can be successfully produced using robotic WAAM technology and highlights its potential for various industrial applications.

For a detailed review, you can access the related study here.