高温宽滞后Cu-13.5Al-2.5Mn-1.36Zn合金的晶体结构分析  

Crystal Structure Analyses on Cu-13.5Al-2.5Mn-1.36Zn Alloy with High Phase Transformation Temperature and Broad Hysteresis

作　　者：董桂霞[1] 马晓丽[2] 

机构地区：[1]北京有色金属研究总院先进电子材料研究所,北京100088 [2]河北工业大学金属材料研究所,天津300132

出　　处：《材料导报》2006年第9期152-154,157,共4页Materials Reports

基　　金：国家攀登计划特别支持资助项目(1999[045])

摘　　要：应用透射电子显微镜(TEM)对Cu-13.5Al-2.5Mn-1.36Zn合金的晶体结构进行了分析,结果表明,该合金的亚结构与常见的18R及2H马氏体中的堆垛层错及孪晶条纹有很大的不同。在这种合金的马氏体变体中,可至少观察到两种面缺陷以相近的密度分布,合金中各变体以多种形式进行协作,不同变体的内部亚结构相差很大,且有些变体在界面处以相当牢固的方式进行连接。以上这些结构特征可能与该合金的高逆相变温度及宽相变滞后有关。In this paper, the crystal structure of Cu-13.5Al-2.5Mn-1.36Zn alloy is analyzed by TEM. The results showed that the substructure morphologies of the alloy are much more different from those of the common 18R and 2H martensite. At least two kinds of face defects distributing at close density can be observed, varieties coordinate in varied manners, and the inner substructures have greater difference, especially, some varieties combine in fairly firm way. The above characteristics may have close relationships with the high phase transformation temperature and broad hysteresis of the alloy.

关 键 词：Cu-13.5Al-2.5Mn-1.36Zn合金 相变温度 相变滞后 晶体结构分析 

分 类 号：TG139[一般工业技术—材料科学与工程]