Keizo Hashimoto

Title: Keizo Hashimoto: Innovator in TiAl Intermetallic Compounds

Introduction

Keizo Hashimoto is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of materials science, particularly in the development of TiAl intermetallic compounds. With a total of 3 patents to his name, Hashimoto's work focuses on enhancing the properties of these advanced materials.

Latest Patents

Hashimoto's latest patents include a process for producing TiAl intermetallic compound-base alloy materials. This invention aims to improve high-temperature deformability. The alloy comprises basic components: Ti.sub.y AlCr.sub.x, wherein 1% ≤ X ≤ 5%, 47.5% ≤ Y ≤ 52%, and X + 2Y ≥ 100%. It features a fine-grain structure with a β phase precipitated on a grain boundary of equiaxed γ grain, having a grain size of less than 30 μm. The alloy possesses superplasticity, with strain rate sensitivity factors (m value) of 0.40 or more and tensile elongation of 400% or more, tested at 1200°C and a strain rate of 5 × 10^-4 S^-1.

Career Highlights

Keizo Hashimoto is currently employed at Nippon Steel Corporation, where he continues to innovate in the field of materials engineering. His work has been instrumental in advancing the understanding and application of TiAl alloys in various industries.

Collaborations

Throughout his career, Hashimoto has collaborated with notable colleagues, including Toshihiro Hanamura and Youji Mizuhara. These partnerships have contributed to the successful development of his patented technologies.

Conclusion

Keizo Hashimoto's contributions to the field of TiAl intermetallic compounds highlight his role as a leading inventor in materials science. His innovative approaches and collaborations continue to influence advancements in high-performance alloys.