4.7 Article

A coaxial nozzle assisted underwater laser welding of 316L stainless steel

Related references

Note: Only part of the references are listed.
Article Materials Science, Multidisciplinary

Role of Pd interlayer on NiTi to Ti6Al4V laser welded joints: Microstructural evolution and strengthening mechanisms

Fissha Biruke Teshome et al.

Summary: Obtaining a reliable NiTi to Ti6Al4V dissimilar joint with NiTi's superelasticity can provide design flexibility in aerospace and biomedical fields. Adding Pd can limit the formation of Ti2Ni intermetallic compounds, resulting in improved mechanical properties and superelastic behavior of the NiTi-Ti6Al4V joint. The presence of Pd also leads to a decrease in the fraction of Ti2Ni and the dominance of Ti-Pd and NiTi compounds in the fusion zone.

MATERIALS & DESIGN (2023)

Article Materials Science, Multidisciplinary

Interfacial microstructure and strengthening mechanism of dissimilar laser al/steel joint via a porous high entropy alloy coating

Min Zheng et al.

Summary: A porous high entropy alloy (HEA) coating was prepared on a steel surface by vacuum sintering and used as a transition layer during dissimilar laser joining of Al to steel. The coating improved the wettability and spreadability of the molten filler wire on the substrate, resulting in increased brazed width and reduced contact angle. The use of the coating also led to the formation of a composite-like microstructure, gradient nanocrystalline layer, and improved fracture load and displacement in the laser joints.

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T (2023)

Article Thermodynamics

Numerical and experimental study on keyhole dynamics and pore formation mechanisms during adjustable-ring-mode laser welding of medium-thick aluminum alloy

Jianmin Li et al.

Summary: This study quantitatively investigated the improvement of porosity during adjustable-ring-mode laser welding of aluminum alloys and analyzed keyhole dynamics and porosity formation mechanisms. Experimental results indicate that porosity can be significantly reduced with the compounding of a ring laser beam over the Gaussian beam. Simulation results demonstrate two mechanisms that work synergistically to suppress porosity. This work has important theoretical and practical implications for porosity suppression during laser welding of aluminum alloys.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2023)

Review Engineering, Mechanical

Underwater Laser Welding/Cladding for High-performance Repair of Marine Metal Materials: A Review

Guifang Sun et al.

Summary: This review article examines the underwater laser welding/cladding technique, discussing recent advancements and key issues, as well as the microstructural-mechanical behavior of repaired marine materials. It also reviews the powder-feeding based and wire-feeding based underwater laser direct metal deposition techniques. The differences between underwater laser direct metal deposition and in-air laser direct metal deposition are illustrated, and future challenges and directions for underwater laser welding/cladding technology are proposed.

CHINESE JOURNAL OF MECHANICAL ENGINEERING (2022)

Article Optics

Effect of S-curve laser power for power distribution control on laser oscillating welding of 5A06 aluminum alloy

Zhejun Tan et al.

Summary: This paper investigates the effects of employing an S-curve laser power to improve the microstructure and mechanical properties of laser oscillating welded joints in 5A06 aluminum alloy. The results show that using the S-curve power allows for the production of good joints with refined grain structure and improved mechanical properties compared to constant power. The tensile strength of the joints using the S-curve power was increased by 35.3% and showed higher ductility and good plasticity.

OPTICS AND LASER TECHNOLOGY (2022)

Article Metallurgy & Metallurgical Engineering

Laser weld formation and microstructure evolution in stainless steel alloys

Tate Patterson et al.

Summary: Variations in laser beam welding parameters significantly affect weld pool shape and microstructure formation in stainless steel alloys. Understanding the relationship between weld pool geometry and process conditions is crucial for predicting solidification phenomena and avoiding weldability issues.

WELDING IN THE WORLD (2022)

Article Materials Science, Multidisciplinary

Improving the ductility in laser welded joints of CoCrFeMnNi high entropy alloy to 316 stainless steel

J. P. Oliveira et al.

Summary: This study investigates the improvement of joint performance between high entropy alloys and stainless steel by changing the base material condition. The microstructure evolution and mechanical performance of the welded joint are evaluated, and the composition changes across the fusion zone are considered to predict the microstructure evolution. The results provide insights into the mechanism for improving joint performance.

MATERIALS & DESIGN (2022)

Article Materials Science, Multidisciplinary

Underwater additive manufacturing of Ti-6Al-4V alloy by laser metal deposition: Formability, gran growth and microstructure evolution

Yunlong Fu et al.

Summary: This paper presents the first use of underwater laser metal deposition technology in building thin walled Ti-6Al-4V parts, showing that stable local dry cavity and shielding-gas flow layer formed during the ULMD process using an improved ULMD nozzle can generate uniform thin-walled parts without cracks and pores. Columnar beta-grains were observed throughout the ULMD part, growing epitaxially opposite to the heat flow direction and changing in size with deposition layer increase.

MATERIALS & DESIGN (2021)

Article Optics

Effect of heat input on interfacial microstructure, tensile and bending properties of dissimilar Al/steel lap joints by laser Welding-brazing

Yang Jin et al.

Summary: The study found that with the increase of laser power, the fracture load of laser Al/steel joints first increased and then reached a plateau, but the laser power had limited influence on the joint's bending property due to the formation of tough FeZn10. Numerical simulation showed that the interfacial temperature varied with the increasing laser power, resulting in the change of IMCs layer.

OPTICS AND LASER TECHNOLOGY (2021)

Article Chemistry, Physical

In Situ Formation of Laser-Cladded Layer on Thin-Walled Tube of Aluminum Alloy in Underwater Environment

Cheng Liu et al.

Summary: The study investigated the influence of water environment on the laser melting process and properties of thin-walled aluminum-alloy tubes. It was found that although the uniformity of the cladding layer decreased in underwater environment, good metallurgical bonding was still achieved, and the grain size was smaller.

MATERIALS (2021)

Article Chemistry, Physical

Microstructure and Corrosion Resistance of Underwater Laser Cladded Duplex Stainless Steel Coating after Underwater Laser Remelting Processing

Congwei Li et al.

Summary: The research studied the phase composition and corrosion resistance of a duplex stainless steel coating prepared using underwater laser technologies. It was found that underwater laser remelting can improve the corrosion resistance of the coating, with the best corrosion resistance observed at 3 kW.

MATERIALS (2021)

Article Engineering, Industrial

Suppressing porosity of a laser keyhole welded Al-6Mg alloy via beam oscillation

Chen Zhang et al.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2020)

Article Automation & Control Systems

Weld morphology and mechanical performance of marine structural steel welded underwater in a real marine environment

Zahit Colak et al.

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY (2020)

Article Multidisciplinary Sciences

Fatigue life of underwater wet welded low carbon steel SS400

N. Muhayat et al.

HELIYON (2020)

Article Engineering, Industrial

Local dry underwater welding of 304 stainless steel based on a microdrain cover

Leigang Han et al.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2019)

Article Engineering, Industrial

Underwater local dry cavity laser welding of 304 stainless steel

Ning Guo et al.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2018)

Article Thermodynamics

Numerical study of keyhole dynamics and keyhole-induced porosity formation in remote laser welding of Al alloys

Runqi Lin et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2017)

Article Engineering, Industrial

Pores formation in laser-MAG welding of 42CrMo steel

Yan Zhang et al.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2017)

Article Materials Science, Multidisciplinary

Effect of water depth on weld quality and welding process in underwater fiber laser welding

Ning Guo et al.

MATERIALS & DESIGN (2017)

Article Materials Science, Coatings & Films

Effect of confinement on surface modification for laser peen forming without protective coating

Ninggang Shen et al.

SURFACE & COATINGS TECHNOLOGY (2016)

Article Metallurgy & Metallurgical Engineering

Underwater Wet Welding for HSLA Steels: Chemical Composition, Defects, Microstructures, and Mechanical Properties

Wen-Bin Gao et al.

ACTA METALLURGICA SINICA-ENGLISH LETTERS (2015)

Article Optics

Volume absorption laser energy meter for high energy laser by water absorption

Ji Feng Wei et al.

APPLIED PHYSICS B-LASERS AND OPTICS (2013)

Article Engineering, Industrial

Role of side assisting gas on plasma and energy transmission during CO2 laser welding

Chun-Ming Wang et al.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2011)

Article Engineering, Industrial

Effect of shielding conditions of local dry cavity on weld quality in underwater Nd:YAG laser welding

Xudong Zhang et al.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2006)

Article Optics

Optical investigation of cavitation erosion by laser-induced bubble collapse

X Chen et al.

OPTICS AND LASER TECHNOLOGY (2004)

Article Materials Science, Multidisciplinary

Laser-material interaction and process sensing in underwater Nd : yttrium-aluminum-garnet laser welding

XD Zhang et al.

JOURNAL OF LASER APPLICATIONS (2003)

Article Materials Science, Multidisciplinary

Recent developments in underwater wet welding

M Rowe et al.

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING (2001)