Scientists have developed a new way to make stronger metals for use in extreme environments like power generation turbines.
By using 3D printing and analyzing the metals with neutron technology, they’ve found that heat treatments can lower the stress within the metals, making them more durable.
Advanced Superalloys
Extreme applications such as advanced gas turbines for electric power generation require equally sophisticated materials. In this research, scientists examined the stress effects in innovative “superalloys” composed of two high-strength, high-heat resistant metals. The team crafted these alloys using 3D printing, a technique that employs lasers to mold metal powder into specified shapes. Subsequently, they utilized neutrons to analyze the internal structure of the printed metals.
The study revealed that heat treatments effectively mitigate stress induced during manufacturing. Additionally, it was found that these stresses are more influenced by specific manufacturing parameters rather than the metal’s chemical composition.
Advancements in 3D-Printed Metal Alloys
The team adeptly employed laser-based 3D printing to fabricate alloys from two distinct metals, Inconel 718 and René 41, without any cracking. Neutron experiments facilitated the development of an enhanced method to accurately and efficiently assess the levels of stress induced in the metals throughout the manufacturing process. The findings will contribute to the production of stronger, more advanced alloys with lower manufacturing costs. These alloys are crucial for applications in extreme environments.
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