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LIU Ya, ZHANG Zhaohui, HE Yangyu, JIA Xiaotong, WANG Qiang, FENG Xiangxiang, CHENG Xingwang. Effect of Hot Rolling Temperature on Microstructure and Mechanical Properties of Ti-Zr-V-Nb-Si Alloy[J]. CHINESE JOURNAL OF VACUUM SCIENCE AND TECHNOLOGY, 2024, 44(10): 863-870. DOI: 10.13922/j.cnki.cjvst.202402011
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Light weight high entropy alloy (TiZrV0.5Nb0.5)99.4Si0.6 with a density of 6.1 g/cm3 was prepared by vacuum arc melting. The effects of different hot-rolling temperatures (900℃, 1000℃ and 1100℃) on the microstructure and mechanical properties were investigated. The results show that after rolling, the strength and elongation are both improved. The tensile strength and elongation of the alloy with a rolling temperature of 900℃ reached 1164.5 MPa and 14.7%, which was best and can surpass 13.9% and 950% than that of the as-cast alloy respectively. However, with the further increase of hot-rolling temperature, the grain size increases and the mechanical properties decline. The excellent mechanical properties of the alloy with a rolling temperature of 900℃ are the result of dislocation, solid solution, second phase and grain refinement.
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