Preparation of KW–TiC Alloy, and Its Mechanical Properties, Resistance to Transient Thermal Shock
WANG Yijia, YAN Qingzhi
Laboratory of Special Ceramics and Powder Metallurgy, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
KW–TiC alloy was fabricated through mechanical alloying method and hot rolling process. Compared with KW alloy, the KW–TiC alloy exhibited bending strength of 2500MPa and higher deformation capacity. Both KW–TiC and KW had ductile-to-brittle transition temperature below 250°C. Annealing at 1800°C for 1 hour, no significant equiaxed recrystallization was observed. KW–TiC alloy had the similar structure to KW, but its size was much smaller. The thermal shock resistance of both alloys was characterized by an electron beam facility. Thermal shock tests were conducted at absorbed power densities from 0.44GW/m2 to 0.88GW/m2. After the tests, the KW–TiC and KW alloys showed different crack morphology. However, the existence of TiC reduced the thermal conductivity of KW–TiC alloy, which resulted in the surface melting.
王一甲，燕青芝. 碳化钛弥散强化钾钨合金的制备、力学性能及其抗瞬态热冲击能力研究[J]. 航空制造技术, 2019, 62(19): 41-46.
WANG Yijia, YAN Qingzhi. Preparation of KW–TiC Alloy, and Its Mechanical Properties, Resistance to Transient Thermal Shock. Aeronautical Manufacturing Technology, 2019, 62(19): 41-46.
2019, 
