Investigation on microstructure and tensile shear properties of 9Cr oxide dispersion strengthened steel resistance spot welded joint

Article Engineering, Industrial

Stable bonding of W and ODS steel fabricated by TLP diffusion technology through inserting a novel composite interlayer Zr/Cu

Jingwen Zhang et al.

Summary: The study successfully bonded tungsten with ODS steel using a novel composite interlayer Zr/Cu and transient liquid phase diffusion technology. By optimizing processing parameters, a high-strength joint was fabricated.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2022)

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Article Materials Science, Multidisciplinary

Similar and dissimilar resistance spot weldability of Q&P980 and TWIP1180 steels

Shitong Wei et al.

Summary: The resistance spot weldability of the newly developed TWIP1180 and Q&P980 with different thicknesses was evaluated, revealing significantly asymmetric weld nuggets due to different sheet thicknesses, heat conductivities, and melting points. Pullout or partial pullout failure modes were obtained for the Q&P/Q&P and Q&P/TWIP combinations under proper welding currents, while only interfacial failure mode was observed for the TWIP/TWIP combination owing to the high strength and large thickness. Furthermore, the proper welding lobe for the Q&P/TWIP combination was crucial for the application of TWIP1180 and Q&P980 in the automobile industry.

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING (2022)

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Article Materials Science, Multidisciplinary

Chemical and structural evolution of nano-oxides from mechanical alloying to consolidated ferritic oxide dispersion strengthened steel

Gabriel Spartacus et al.

Summary: The evolution of nano-oxides in ODS steels plays a crucial role in their strength and stability, including the transformation process between Y2Ti2O7 and Y2TiO5.

ACTA MATERIALIA (2022)

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Article Optics

Microstructure and mechanical performance of ODS superalloys manufactured by selective laser melting

Qing-song Song et al.

Summary: In this study, SLM was used to prepare ODS superalloys, and the density, microstructure, and mechanical properties of the alloys under different laser energy densities were investigated. The results showed that with increasing laser energy density, the hardness and strength of the alloy improved, demonstrating dispersion strengthening and fine grain strengthening effects.

OPTICS AND LASER TECHNOLOGY (2021)

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Article Materials Science, Multidisciplinary

Novel Double-Half Spot Weld Testing Technique For Damage Progress And Failure Analysis Using Digital Image Correlation Techniques

A. Mohamadizadeh et al.

Summary: The novel testing and analysis techniques developed in this study allow for real-time observation of crack evolution and failure in spot welds, providing valuable insights into complex failure mechanisms. Through the use of DHW specimens and DIC analysis, interfacial and pull-out failure modes in spot welds were observed and quantified for the first time.

EXPERIMENTAL MECHANICS (2021)

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Article Chemistry, Analytical

Microstructure Study of Pulsed Laser Beam Welded Oxide Dispersion-Strengthened (ODS) Eurofer Steel

Jia Fu et al.

Summary: Laser welding of ODS Eurofer steel with a specific laser technique achieved full penetration welding. The addition of filler material and post heat treatment resulted in joints with fine grains and dispersed oxide nanoparticles.

MICROMACHINES (2021)

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Article Nanoscience & Nanotechnology