Microstructure and Mechanical Properties of Spray Deposited Ni-based Superalloys  

作　　者：米国发 

机构地区：[1]hool of Materials Science and Engineering, Henan Polytechnic University

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2009年第5期796-799,共4页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the Innovation Fund for Outstanding Scholar of Henan Province(No. 0621000700)

摘　　要：Three kinds of superalloys were prepared by spray deposited process. The analysis results of microstructures and mechanical properties indicate that the spray deposited preforms with higher integral densification and the oxygen content in each kind of superalloy was very low. The microstructures are consisted of fine grain without dendritic equi-axed. The spray deposited superalloys possessed good ductility. The forging experiment displays that even though the once deformation of spray deposited GH742 alloy more than 60%, the crack can not be found. Meanwhile, the mechanical properties of spray deposited superalloys are significantly increased.Three kinds of superalloys were prepared by spray deposited process. The analysis results of microstructures and mechanical properties indicate that the spray deposited preforms with higher integral densification and the oxygen content in each kind of superalloy was very low. The microstructures are consisted of fine grain without dendritic equi-axed. The spray deposited superalloys possessed good ductility. The forging experiment displays that even though the once deformation of spray deposited GH742 alloy more than 60%, the crack can not be found. Meanwhile, the mechanical properties of spray deposited superalloys are significantly increased.

关 键 词：spray deposition Ni-based superalloys MICROSTRUCTURE mechanical properties 

分 类 号：TG132.32[一般工业技术—材料科学与工程]