Cu－Zn－Al合金预贝氏体相变与贝氏体形核研究  

Prebainitic Transformation and the Nucleation of Bainite in a Cu-Zn-Al Alloy

作　　者：孟祥康[1] 杨延清[1] 武小雷[1] 康沫狂[1] 

机构地区：[1]西北工业大学材料科学与工程系

出　　处：《电子显微学报》1994年第1期22-25,共4页Journal of Chinese Electron Microscopy Society

基　　金：国家自然科学基金

摘　　要：本文考察了Ｃｕ－Ｚｎ－Ａｌ合金的预贝氏体相变与贝氏体形核。内耗实验表明预贝氏体相变的主要过程为溶质原子扩散、偏聚；能谱分析揭示预贝氏体相变时存在溶质偏聚引起的溶质原子贫化区与富化区；原位观察证实贝氏体于溶质原子贫化区切变形核。Works on the prebianitic transformation and the nucleation of bainite in a Cu-Zn-Al alloyare conducted. Internal friction experiments show that the prebainitic transformation occursbasically with the diffusion or segregation process of solute atoms. Composition analyses revealthat solute atom’s depleted and rich regions resulted from solute atom’s segregation can be formed within prebainitic transformation. In situ observation of TEM indicates that bainite nu-cleate by shear in solute atom’s depleted regions.

关 键 词：贝氏体 形核 铜锌合金 相变 铝 

分 类 号：TG146.11[一般工业技术—材料科学与工程]