Microstructures of spinodal phases in Cu-15Ni-8Sn alloy

作     者：YanhuiWang MingpuWang BinHong 

作者机构：SchoolofMaterialScienceandEngineeringCentralSouthUniversityChangsha410083China 

出 版 物：《Journal of University of Science and Technology Beijing》 (北京科技大学学报（英文版）)

年 卷 期：2005年第12卷第3期

页      面：243-247页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：Cu-15Ni-8Sn alloy spinodal decomposition DO22 ordering variant 

摘      要：The microstructures of spinodal phases in Cu-15Ni-8Sn alloy were studied by TEM. It was found that when the alloy is completely in a as-quenched state, spinodal decomposition is quick. Ordering appears after spinodal decomposition. The ordered phase with DO22 structure has three variants obtained from coarsening spinodal structure. The reason of ordering appeared after spinodal decomposition is that the content of solute atoms needed by ordering is higher than the average, which can be reached by the composition fluctuation of spinodal decomposition. It was speculated that the morphology of the ordered phase is needle-like.