Abstract
Strength is one important mechanical property of lithium hydride (LiH) for application as a neutron moderator and absorbent at elevated temperatures. Using the digital image correlation (DIC) method for deformation measurement, the short—term strength of LiH was investigated with both tensile and three—point bend (3PB) specimens in the range of room temperature (RT) to 600 °C. The results show that the temperature dependence of the strength from tensile and 3PB tests shows similarity. As the temperature increases, the strength changes slightly, then rises to the maximum and finally decreases due to the softening effect. The fracture surfaces of specimens show the main characteristics of trans—granular fracture at different temperatures, except for 600 °C. With increasing temperature, the fracture surfaces become rough and numerous tortuous micro—cracks are found. Especially for 3PB specimens, there are dimple—like structures with distorted grains and obvious intergranular cleavage fracture.
Subject
Inorganic Chemistry,Condensed Matter Physics,General Materials Science,General Chemical Engineering
Reference23 articles.
1. Studying on the high-temperature tensile property of lithium hydride;Zhicong;Rare Met. Mater. Eng.,2006
2. Tensile property of lithium hydride under different environment condition;Zhicong;Ordnance Mater. Sci. Eng.,2006
3. Fabrication and characterization of LiH ceramic pebbles by wet process
4. A first-principles study of hydrogen behavior in lithium hydride;Lang;J. At. Mol. Phys.,2016
5. A review of irradiation stability of lithium hydride neutron shielding material
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献