CAJ | 학술논문

为研究弹带表层金属在急剧升温条件下的热软化机理与组织演变过程,基于再结晶动力学理论分析表层金属发生再结晶及晶粒长大的可能性,研究了动态再结晶对弹带表层热软化的影响,采用金相显微镜和扫描电镜（SEM）观察并分析了回收砂弹的弹带细观与微观组织.实验中发现了存在于弹带表面薄层的再结晶组织,且部分晶粒未显著长大,这表明再结晶是弹带表层热软化的微观机理.
위연구탄대표층금속재급극승온조건하적열연화궤리여조직연변과정,기우재결정동역학이론분석표층금속발생재결정급정립장대적가능성,연구료동태재결정대탄대표층열연화적영향,채용금상현미경화소묘전경（SEM）관찰병분석료회수사탄적탄대세관여미관조직.실험중발현료존재우탄대표면박층적재결정조직,차부분정립미현저장대,저표명재결정시탄대표층열연화적미관궤리.
To study the thermal softening mechanism and structure evolution of surface metal under the sharp raise of temperature, kinetics of recrystallization was used to research the possibility of surface metal recrystallization and grains; growth. The effect of dynamic recrystallization on thermal softening of surface metal was analyzed. Mesostructure and microstructure of rotating band were observed by optical microscope and scanning electron microscopy. In experiment, recrystallization structure on surface layer of rotating band was found, and partial grains didn＇t grow remarkably. The result shows that recrystallization on surface is the microscopic mechanics of thermal softening.