Mechanical Testing of forAM® Haynes® 282® Specimens
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The above combustor liner features a thin wall structure (roughly 1.4 mm around), with 23,000 individual holes— consisting of 3,000 1 mm diameter holes around the lower portion and 20,000 .5 mm diameter holes at the top and inside—for optimized air to fuel ratios.
Printed in Haynes 282, it measures 29 mm in diameter and 225 mm in height, with 128 0.8 mm swirling mixture blades built internal to the nozzle at the bottom.
This study provides an in-depth analysis of the performance characteristics of forAM® Haynes® 282® material, with a specific focus on its behavior under high temperatures when printed on Velo3D Sapphire systems. Given the emerging role of AM and the increasing usage of high-performance superalloys like Haynes 282 in various industries, understanding its properties in diverse operational conditions has become crucial.
One of the distinguishing features of this study is the exploration of the impact of extreme print conditions on Haynes 282. This includes examining “as printed” surfaces that have been manufactured at severe angles as low as 15 degrees from the horizontal and with a printed thickness of 1 mm. These instances represent some of the most challenging conditions in additive manufacturing and understanding the behavior of Haynes 282 under such circumstances can offer valuable insights for its application.
Furthermore, our study compares the additive properties of Haynes 282 with the published data for the material manufactured using traditional methods, as provided by Haynes International. This comparison intends to showcase the unique characteristics and potential advantages of parts additively manufactured and comprised of this material.
The findings from this study are expected to serve as a comprehensive guide for design engineers, offering a deep understanding of how Velo3D printed Haynes 282 behaves under a wide array of material conditions. By enabling engineers to anticipate the material’s response in various scenarios, this study contributes to enhancing the reliability and performance of additively manufactured products, using Haynes 282.
Comparison of Inconel 781 to forAM Haynes 282
High-Temperature Applications
Haynes 282 excels over other alloys such as Inconel 718 at temperatures greater than 1200°F (650°C) due to the superior strength of Haynes 282 alloy at those temperatures as well as its excellent fabricability.
Corrosion Resistance
When exposed to hydrochloric acid, Inconel 718 displays a higher rate of corrosion than Haynes 282. This higher resistance to dissolution may make Haynes 282 a preferable option in certain chemical and petrochemical applications.
Thin Walls
In certain instances, to achieve the same degree of stability at high temperatures, a part printed using Inconel 718 may require additional thickness, which can add to an applications overall weight. For example, in industries such as space and aerospace where an engine’s weight can drastically affect performance, Haynes 282 could be a better option in critical engine components.
