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Meeting Materials Science & Technology 2020
Symposium Metallurgy and Magnetism
Presentation Title Microstructural Development and Mechanical Property Changes Due to Temper Embrittlement in HY-80 Submarine Steel
Author(s) Charles D'Ambra, Jason Schibler, Michele V Manuel, Thomas W Krause, Aroba Saleem
On-Site Speaker (Planned) Charles D'Ambra
Abstract Scope HY-80 is a low-alloy, low-carbon steel used primarily in submarines for its high strength and toughness. HY-80 is susceptible to temper embrittlement caused by the migration of impurity elements and carbides towards the grain boundaries when held between the embrittling range of 370 to 600 C. There is currently no widespread non-destructive method for testing early stages of temper embrittlement of HY-80 steel. The purpose of this paper is to analyze the microstructural development and changes in mechanical properties to determine their relation to magnetic property variations. Five samples of HY-80 were heat treated at 525 C for different holding times to induce varying degree of temper embrittlement. These samples were then characterized by scanning electron microscope (SEM), and Vickers microhardness tests. It was observed that hardness changed with holding time, and these changes were attributed to change in the carbide precipitate density within the matrix due to temper embrittlement.


Comparative Studies on the Structure and Magnetic Properties of Mechanically Alloyed Fe40Co30Ni30 Medium-entropy Alloy in Argon and Ambient Atmospheres
Development of FeCo/MnZn Ferrite Composite by Field Assisted Sintering Technique
Effects of Steel Sensitization on Magnetic Properties Measured through MOKE Magnetometry
Exchange Coupled Ferromagnetism in Nanochessboards Obtained By Eutectoid Decomposition in the Co-Pt and Fe-Pt Systems
Improvement of the Magnetic Characteristics of Materials Due to the Formation of Unidirectional Boundaries of Ferrite during Processing in SHS Conditions
Introductory Comments: Metallurgy and Magnetism
Magnetic Performance of Gas-atomized Maraging Steel Powders
Microstructural Development and Mechanical Property Changes Due to Temper Embrittlement in HY-80 Submarine Steel
Modeling the Magnetostructural Interactions in Austenitic Steels at the Quantum Mechanical Level
Processing of Fe-Co Alloys: Past and Present
Processing of Vitreous Fe-based Wires into Nanostructured Soft Magnetic Material
Rapid Thermal Processing of Amorphous and Nanocrystalline Soft Magnetic Alloys
The Effect of Deformation of Low Alloy Steels Used in Metallurgy on Their Magnetic Characteristics
The Influence of the Microstructure Obtained After Processing in SHS Conditions on the Magnetic Characteristics of Steels

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