两相体系中第二相颗粒粗化的研究进展  

Research Development of Secondary Phase Particle in Dual-phase System

作　　者：吴志方[1] 吴润[1] 

机构地区：[1]武汉科技大学材料与冶金学院,武汉430081

出　　处：《材料导报》2010年第15期113-117,共5页Materials Reports

基　　金：国家自然科学基金(50371027);湖北省自然科学基金(2008CDB256)

摘　　要：综述了近年来两相体系中第二相颗粒粗化的研究进展,LSW理论能对颗粒的Ostwald熟化过程进行定量,并且第二相体积分数、弹性应力以及颗粒形状和合金元素等对Ostwald熟化过程有影响。LSW理论仍来源于驱动力的分析和基本方程的推导。对于纳米两相体系,其第二相颗粒的粗化仍满足经典的Ostwald熟化理论——LSW理论。纳米颗粒粗化行为的理论研究与钢铁生产紧密相联,钢铁产品的性能提高与其中夹杂物的尺寸控制有关,第二相Ostwald熟化理论将能有效应用于钢铁夹杂物纳米尺度的控制。The coarsening of secondary phase particle in dual-phase systems is reviewed. The Ostwald ripening of particle can be quantitatively figured out by LSW theory. The influence factors include volume fraction of secondary phase particle, elastic stress, particle morphology, alloy element,etc. LSW theory has still been deduced from driving and basic equations. For nano secondary phase system, the ripening of secondary phase particle in nano-sized dual- phase systems still follows the LSW theory. Therefore, the theory will be promisingly applied in steel making because the size of inclusion in steel is now controlled in nano-scale.

关 键 词：第二相颗粒 Ostwald熟化 夹杂物 

分 类 号：TG111.5[金属学及工艺—物理冶金]