首页|增大冷速和退火对Al50Ni50合金耐蚀性能的改善

增大冷速和退火对Al50Ni50合金耐蚀性能的改善

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通过周向速度(Sc)分别为21和42 m/s的熔带甩带法制备单相Al50Ni50条带,然后采用多种实验方法研究在不同温度下退火Al50Ni50条带的显微组织和腐蚀行为.随着Se从21 m/s提高到42 m/s,相应的铸态和退火条带的(100)晶体取向因子=F(100)增大,再结晶的障碍减少以及钝化膜的总电阻增大.Sc=42 m/s的铸态条带比21 m/s的铸态和退火的条带具有更稳定、更致密的A12O3钝化膜,并可以通过在700 ℃退火进一步提升.因此,提高冷却速率和选择适当温度进一步退火可以提高AlNi条带的耐腐蚀性能.
Enhancing corrosion resistance of Al50Ni50 alloy by increasing cooling rate plus annealing
Monophasic AlsoNiso ribbons were fabricated by melt spinning at circumferential speeds(Sc)of 21 and 42 m/s,and subsequently annealed at various temperatures.The microstructure and corrosion behavior of ribbons were studied through various experimental methods.With increasing Sc,the as-spun and annealed ribbons at 42 m/s show a higher(100)crystal orientation factor F(100),a lower barrier to recrystallization and a higher total film resistance than the counterparts with 21 m/s.The as-spun ribbon at 42 m/s demonstrated a denser and more stable Al2O3 passive film compared to the as-spun and annealed ribbons at 21 m/s.This improvement in passive film can be further enhanced by 700 ℃ annealing.Therefore,the corrosion resistance of AlNi ribbons can be improved by increasing Sc and additional annealing at an appropriate temperature.

AlNi alloyrapid solidificationorientation factorrecrystallizationcorrosion behavior

刘瀚泽、闫芝成、陈其、张昊、冯玉、齐志港、王兆萱、潘少鹏、贾义勇、王伟民

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山东大学材料科学与工程学院材料液固结构演变与加工教育部重点实验室,济南 250061

太原理工大学材料科学与工程学院,太原 030002

华美新材料(菏泽)有限公司,菏泽 274000

AlNi合金 快速凝固 取向因子 再结晶 腐蚀性为

Key Research and Development Program of China国家自然科学基金国家自然科学基金山东省重点研发计划山东省重点研发计划

2022YFB240410251971093521711582021ZLGX012022CXGC020308

2024

10.1016/S1003-6326(23)66433-7

中国有色金属学报(英文版)
中国有色金属学会

中国有色金属学报(英文版)

CSTPCD
影响因子：1.183
ISSN：1003-6326
年,卷(期)：2024.34(3)
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