Development of Laser Welding and Surface Treatment of Metals

Abstract

This Special Issue on Development of Laser Welding and Surface Treatment of Metals contains as many as twenty-two research articles mainly related to the application of lasers, but also on other welding processes that may be competitive to laser technologies under specific conditions. Despite the introduction of lasers for material processing in the 1960s, the continuous development of laser devices also leads to the development and expansion of laser technology applications. This Special Issue is a compendium of knowledge in the field of fusion welding, the manufacturing of surface layers and coatings with increased wear resistance and tribological characteristics, as well as corrosion resistance and the characterization of coatings and surface layers. The topics of the presented research articles include aspects related to laser welding (eight articles), especially technological conditions, the properties of different types of joints, and analytical and numerical aspects of modelling the laser heat sources. The second dominant issue concerns laser cladding and laser surface treatment of different ferrous and nonferrous metallic and composite materials (six articles). In addition, there are interesting results of the study of fusion welding under forced cooling of the deposit or underwater conditions (four articles), results on the characterization of wear resistance coating produced by different technologies that can be competitive for laser cladding (three articles), and an original study on local strengthening of the thin-walled structure by laser treatment (one article). This Special Issue provides very wide and valuable knowledge based on theoretical and empirical study in the field of laser and fusion welding, laser and related coating technologies, characterization of coatings, and wear phenomena.

Dataset on instrumented Charpy V-notch impact tests of different zones of electron beam welded S960M steel

“…The development of higher grades TMCP steel and the requirements for welded structures have prompted extensive study into the characteristics influencing the behavior of these materials in structures during welding and after-weld operation [4 , 5 , 6 , 7] . The characteristic features of high strength structural steels like S960M are make them exceptional for application in the field of engineering structures and highly loaded constructional components like heavy duty trucks, cranes, bridges, mobile cranes, etc.…”

Microstructure and Mechanical and Impact Behaviors of WC-Particle-Reinforced Nickel-Based Alloy Surfacing Layers at Evaluated Temperatures

“…There are many techniques for preparing metal matrix composite coatings, such as surface welding [3,4], laser cladding [5,6] and plasma surfacing [7,8]. Among the many preparation methods, plasma surfacing technology has the advantages of low cost, convenient maintenance and strong material adaptability.…”

Laser Cladding of NiCrBSi/WC + W2C Composite Coatings

“…Constant striving to improve the operational parameters of machine parts and tools and to increase their durability has led to the development of surface treatment and coating methods. One advanced modern method of coatings is laser cladding (LC), which shows several advantages when compared to other conventional methods of surfacing and coating [1][2][3]. Laser beams are a heat source used during the cladding process, providing a high value of power density, precise heating of a small material volume, higher processing speeds, and therefore limited heat input, as well as limited penetration depth and low dilution.…”