王立斐,严鹏,刘林翔,王祯,许骏杰,赵婉蓉,王志军. 定向凝固FCC/B2双相高熵合金微观组织调控及力学性能研究[J]. 航空制造技术, 2024, 67(23/24): 80-87. WANG Lifei, YAN Peng, LIU Linxiang, WANG Zhen, XU Junjie, ZHAO Wanrong, WANG Zhijun. Investigation on Microstructure Control and Mechanical Properties of Directionally-Solidified FCC/B2 Dual-Phase High-Entropy Alloy[J]. Aeronautical Manufacturing Technology, 2024, 67(23/24): 80-87.
WANG Lifei, YAN Peng, LIU Linxiang, et al. Investigation on Microstructure Control and Mechanical Properties of Directionally-Solidified FCC/BDual-Phase High-Entropy Alloy[J]. Aeronautical Manufacturing Technology, 2024, 67(23/24).
王立斐,严鹏,刘林翔,王祯,许骏杰,赵婉蓉,王志军. 定向凝固FCC/B2双相高熵合金微观组织调控及力学性能研究[J]. 航空制造技术, 2024, 67(23/24): 80-87. WANG Lifei, YAN Peng, LIU Linxiang, WANG Zhen, XU Junjie, ZHAO Wanrong, WANG Zhijun. Investigation on Microstructure Control and Mechanical Properties of Directionally-Solidified FCC/B2 Dual-Phase High-Entropy Alloy[J]. Aeronautical Manufacturing Technology, 2024, 67(23/24): 80-87. DOI: 10.16080/j.issn1671-833x.2024.23/24.080.
WANG Lifei, YAN Peng, LIU Linxiang, et al. Investigation on Microstructure Control and Mechanical Properties of Directionally-Solidified FCC/BDual-Phase High-Entropy Alloy[J]. Aeronautical Manufacturing Technology, 2024, 67(23/24). DOI: 10.16080/j.issn1671-833x.2024.23/24.080.
Investigation on Microstructure Control and Mechanical Properties of Directionally-Solidified FCC/BDual-Phase High-Entropy Alloy
the microstructures of the directionally solidified FCC/B
2
dual-phase high-entropy alloy were tailored based on different heat treatment processes to improve the mechanical properties in a wide temperature range. The microstructure evolution mechanism under different heat treatment regimes was clarified
and the influence of microstructures on the mechanical properties of the alloy was analyzed. The results show that high-density near spherical L1
2
precipitates can be obtained in the FCC matrix
while lath-like L1
2
precipitates can be obtained in the B
2
phase after solution treatment followed by double aging at high-temperat
ure 800 ℃ and low-temperature 650 ℃. High-density precipitates effectively strengthen the alloy
and the L1
2
phase can promote dislocation movement in the B
2
phase
which is beneficial to improve the plasticity of the alloy at the same time. Compared to the as-cast sample
the comprehensive hightemperature mechanical properties of the alloy after heat treatment are improved.