Company Filing History:
2 out of 658 
1 out of 583 Years Active: 2021-2022
Title: Innovations of Seok-su Sohn: A Pioneer in High-Entropy Alloys and Steel Sheets
Introduction
Seok-su Sohn is a notable inventor based in Ulsan, South Korea. He has made significant contributions to the field of materials science, particularly in the development of high-entropy alloys and advanced steel sheets. With a total of two patents to his name, Sohn's work showcases innovative approaches to enhancing mechanical properties in materials.
Latest Patents
Sohn's latest patents include a transformation-induced plasticity high-entropy alloy and a preparation method thereof. This invention focuses on a high-entropy alloy that provides improved mechanical properties compared to conventional methods. The alloy undergoes a phase transformation during deformation at cryogenic temperatures, which enhances its performance. The composition of the high-entropy alloy includes 10-35 at % of cobalt, 3-15 at % of chromium, 3-15 at % of vanadium, 35-48 at % of iron, and 0-25 at % of nickel, primarily consisting of an FCC phase at room temperature. The transformation-induced plasticity occurs when part of the FCC phase changes to a BCC phase at cryogenic temperatures.
Another significant patent by Sohn is for a hot rolled steel sheet that exhibits excellent strength and elongation. This steel sheet contains specific percentages of carbon, manganese, aluminum, silicon, molybdenum, vanadium, phosphorus, and sulfur. The microstructure of the steel sheet includes tempered martensite, secondary martensite, epsilon martensite, and retained austenite. The resulting material boasts a tensile strength of at least 1500 MPa, a yield strength of at least 900 MPa, and an elongation of at least 20%.
Career Highlights
Throughout his career, Seok-su Sohn has worked with prominent organizations such as the Postech Academy-Industry Foundation and Posco. His experience in these institutions has allowed him to collaborate on various innovative projects and contribute to advancements in material science.
Collaborations
Sohn has collaborated with notable coworkers, including Sung-hak Lee and Byeong-joo Lee. Their combined expertise has furthered the development of innovative materials and technologies in their respective fields.
Conclusion
Seok-su Sohn's contributions to the field of materials science, particularly through his patents on high-entropy alloys and advanced steel sheets