Considerable research has been carried out to study the laser welding of magnesium alloys. However, studies are mainly devoted butt welding, and there limited information in published literature concerning bead-on-plate AZ91D, even though is required for repair cast AZ91D parts with surface defects. In present investigation, cracking weld metal was observed when an alloy welded using method. Th...

Abstract Numerous challenges persist with the additive manufacturing of high γ ′ containing Ni-based superalloys such as CM247LC. Currently, significant cracking occurs during deposition CM247LC components using laser powder bed fusion and post-processing. Whilst post-deposition procedures seek to eliminate or minimise cracks, current do not produce a microstructure suitable for service. This s...

Laser powder bed fusion (L-PBF) is a versatile additive manufacturing process that can print geometrically complex metal parts for variety of applications. However, poor control defect formation during processing hampers its widespread industrial adoption. Many materials suffer from high crack susceptibility L-PBF, which results in degraded mechanical properties, and an obstacle to the certific...

In this study, the liquation cracking temperature range (LCTR) of over-aged 247LC superalloy repair welds was quantitatively evaluated using spot-Varestraint testing, especially for application in weld heat-affected zone (HAZ). The metallurgical mechanism susceptibility and variation LCTRs superalloys clarified by analyzing microstructural characteristics at surface, thermodynamic calculations....

In this study, the liquation cracking susceptibility in heat-affected zone of CM247LC superalloy gas turbine blades during repair welding was quantitatively evaluated using a newly developed pre-weld Varestraint test method. The geometry replicated through tests for bead. susceptibility, that is, temperature range (LCTR), could be visualization at time crack formation test. LCTR alloy welds (he...

Utilisation of additive manufacturing (AM) for the fabrication Ni-based alloys has seen a massive uptake in both academic and commercial institutions. However, processing traditional superalloys through AM encountered numerous cracking issues. The primary forms include solidification, solid-state liquation mechanisms. Many these are influenced by compositions, with certain systems showing impre...

The conducted research of X5CrNi18-10 (AISI 304) in the DSI Gleeble 3500 device aimed to determine tensile strength this steel at elevated temperatures, simulating welding-like conditions while sensitizing liquation cracking. defined High-Temperature Brittleness Range (HTBR) made it possible whether material is susceptible hot cracking, which can significantly affect weldability structures. Nil...