CAJ | 학술논문

研究冷却速度对熔体旋转法制备的快速凝固Ti-48％Al合金组织的影响.结果表明:同传统凝固相比,快速凝固明显细化了Ti-48％Al合金的组织,并使合金的成分变得均匀.随着冷却速度的增加,合金的晶粒明显细化.研究薄带厚度、辊速与冷却速度的关系.随着辊速的增加,冷却速度增加,薄带厚度呈减小的趋势.由于细晶强化的作用,快速凝固薄带的纳米硬度随着冷却速度的增加而增加.
연구냉각속도대용체선전법제비적쾌속응고Ti-48％Al합금조직적영향.결과표명:동전통응고상비,쾌속응고명현세화료Ti-48％Al합금적조직,병사합금적성분변득균균.수착냉각속도적증가,합금적정립명현세화.연구박대후도、곤속여냉각속도적관계.수착곤속적증가,냉각속도증가,박대후도정감소적추세.유우세정강화적작용,쾌속응고박대적납미경도수착냉각속도적증가이증가.
The influence of cooling rate on the microstructure and nanohardness of the rapidly solidified Ti-48％Al alloys prepared by melt spinning method was studied.The results show that the microstructure of the rapidly solidified ribbons is refined and homogenized compared with that of the conventionally cast mother alloy.With increasing the cooling rate,the grain size decreases greatly.The relationship between the ribbon thickness and the wheel speed was examined,and the effect of the wheel speed on the cooling rate was also studied.It was found that the ribbon thickness decreases inversely with the wheel speed.The nanohardness increases with increasing cooling rate due to the grain size strength.