作　　者： ; (刘恢弘）; (刘杨）; (吕旭东）; (张北江）;

机构地区： 东北大学材料与治金学院材料各向异性与织构工程教育部重点实验室

出　　处： 《钢铁研究学报》 2011年第S2期189-192,共4页

摘　　要： 将脉冲电流应用于GH4169合金再结晶过程,研究了脉冲电流下54%冷变形合金再结晶起始温度、再结晶激活能的变化规律,分析了脉冲电流对合金两相区再结晶机制的影响。研究发现,脉冲电流显著降低合金的静态再结晶起始温度,且降低幅度随电流频率、密度、脉宽增大而增大。脉冲电流通过影响δ相的析出以及再结晶晶粒的形核长大,进而影响合金两相区再结晶机制。 The pulsing current was performed on recrystallization of GH4169 alloy in this paper. The variation of initial temperature of recrystallization and recrystallization activation energy of GH4169 alloy with 54% cold deformation under electropulsing was investigated and the effect of electropulsing on mechanism of recrystallization of two-phase region of GH4169 alloy was analyzed. The researches show that initial temperature of recrystallization of GH4169 alloy can be decreased by pulsing current significantly, and the extent of decline raises with the growth of pulse frequency, current density and pulse width. The mechanism of recrystallization of two-phase region of GH4169 alloy is influenced by pulsing current through precipitation of phase and nucleation and growth of recrystal grain.

关 键 词： 脉冲电流 静态再结晶起始温度 再结晶激活能

领　　域： [金属学及工艺] [一般工业技术] [金属学及工艺]