材料科学
黄铜
极限抗拉强度
退火(玻璃)
合金
再结晶(地质)
延伸率
冶金
微观结构
粒度
铜
古生物学
生物
作者
Parisa Moazzen,Mohammad Reza Toroghinejad
标识
DOI:10.1016/j.msea.2022.143360
摘要
A novel single-phase Ni1.5FeCrCu0.5 High entropy alloy was fabricated by Vacuum Arc Remelting (VAR). The evolution of the alloy's microstructures, crystallographic texture, and mechanical behavior was investigated in as-cast, cold rolling (90% thickness reduction), and annealing (1000 °C for 1 h) conditions. Microstructural evolution demonstrated that the dendritic structure of the as-cast HEA was associated with a very small amount of Cu element segregation, which changed to tense elongated grains after cold rolling. Cold rolling resulted in development of Goss {110}<001>, Goss/Brass {110}<111> and Brass {110}<112> as the major texture components. After annealing, the complete recrystallization structure appeared in an average grain size of 3 μm, and deformation texture components remained. The results indicated the cold rolling led to a significant strengthening of the alloy; its yield strength and ultimate tensile strength of the alloy reached 1220 and 1574 MPa, which was 5 and 3.5 times the as-cast conditions (yield strength: 236 MPa and ultimate tensile strength: 454 MPa), respectively. However, the elongation was reduced to 5%. Eventually, the elongation in the recrystallization state increased approximately seven times.
科研通智能强力驱动
Strongly Powered by AbleSci AI