Mechanical properties of beryllium-titanium intermetallic compounds fabricated by plasma sintering. (March 2022)

• Record Type: Journal Article
• Authors: Hwang, Taehyun; Kim, Jae-Hwan; Nakano, Suguru; Nakamichi, Masaru
• Is Part Of: Nuclear materials and energy. Volume 30(2022)
• Publication Date: 2022-03
• Subjects: Beryllides -- Neutron multipliers -- Mechanical properties -- Microhardness -- Fracture toughness; Nuclear energy -- Periodicals; Nuclear fuels -- Periodicals; Nuclear reactors -- Materials -- Periodicals; Radioactive substances -- Periodicals; 621.4833
• DOI: 10.1016/j.nme.2022.101117
• Languages: English
• ISSNs: 2352-1791

Abstract

Abstract: The purpose of this study was to evaluate the mechanical properties of beryllide (Be12 Ti) fabricated by a plasma sintering method to provide important properties data for the material database for DEMO design. Single-phase Be12 Ti powders were successfully fabricated by the homogenization treatment. Plasma sintering was performed using the homogenized powders at various temperatures to investigate the effect of sintering temperature on the density and microhardness of Be12 Ti. The sintering density of Be12 Ti increased with an increase in sintering temperature from 900 to 1000 °C and then saturated above 1000 °C. The sintering density was almost equal to the theoretical density. The variation in Vickers microhardness as a function of temperature was similar to that of sintering density. The fracture toughness values of Be12 Ti calculated using Anstis, Evans and Charles, Tanakaequations, and Japanese industrial standards (JIS) R1607 criteria were approximately 2.16, 2.07, 2.00, and 2.43 MPa·m 0.5, respectively.