脉冲电流对冷加工黄铜的组织及性能的影响  

EFFECT OF ELECTROPULSING ONMICROSTRUCTURE AND PROPERTIES OFCOLD WORKED BRASS

作　　者：周亦胄[1] 肖素红[1] 郭敬东[1] 何冠虎[1] 

机构地区：[1]中国科学院金属研究所沈阳材料科学国家(联合)实验室

出　　处：《材料研究学报》2002年第4期375-378,共4页Chinese Journal of Materials Research

基　　金：国家自然科学基金59931020;国家重大基础研究G1999065009资助项目

摘　　要：研究了脉冲电流对一种冷加工黄铜再结晶组织和力学性能的影响.结果表明,利用脉冲电流作为形变黄铜的再结晶处理手段,可以得到比常规退火处理更细更均匀的再结晶晶粒,从而使该材料的综合力学性能提高.脉冲电流作用时间短,加热速度快,促进再结晶形核和抑制随后晶粒长大是得到细晶粒的原因.Recrystallized microstructure and mechanical properties of cold worked brass annealed by electropulsing and routine annealing were studied. The results shows that finer and more even recrystallized grains can be obtained by using electropulsing than routine annealing, and mechanical properties of the materials can be improved. The characteristics of electropulsing of very short treating time, high heating rate, increasing nucleation and retarding the subsequent rate of grain growth are the main factors producing finer recrystallized grains.

关 键 词：冷加工 组织 脉冲电流 黄铜 再结晶 力学性能 

分 类 号：TG146.11[一般工业技术—材料科学与工程] TG113[金属学及工艺—金属材料]