Features of hybrid laser-arc welding of GTD-111 superalloy compared to laser beam welding

Article Materials Science, Multidisciplinary

Relationship between solidification and liquation cracks in the joining of GTD-111 nickel-based superalloy by Nd:YAG pulsed-laser welding

Morteza Taheri et al.

Summary: Investigating the solidification and liquation cracks in Nd:YAG pulsed-laser welded GTD-111 nickel-base superalloy joints revealed a strong correlation between liquation cracks in the partially melted zone of base metal and solidification cracks in the weld metal. The study also found that increasing the pulse frequency can reduce the tendency to form both types of cracks.

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T (2021)

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Article Materials Science, Multidisciplinary

Advanced high-strength AA5083 welds by high-speed hybrid laser-arc welding

A. Vorontsov et al.

Summary: High-speed hybrid laser-arc welding (HS-HLAW) was used to ensure the strength of the AA5083 alloy weld, demonstrating reduced porosity and insignificant magnesium evaporation in the laser melting zones. The weld metal strength reaches 98.9% of the initial material strength under the optimized heat input.

MATERIALS LETTERS (2021)

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Article Engineering, Mechanical

The effect of service temperature on the impact strength and fracture toughness of GTD-111 superalloy

Morteza Taheri et al.

Summary: The study conducted impact tests on gas turbine blades, revealing variations in fracture toughness of the blade root under different temperature conditions, influenced by the formation of hard phases during service.

ENGINEERING FAILURE ANALYSIS (2021)

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Article Materials Science, Multidisciplinary