宇航材料工艺2013，Vol.43Issue(3)：105-109,5.
XG3232合金的高温力学性能
Elevated Temperature Mechanical Properties of XG3232 Superalloy
摘要
Abstract
The isothermal oxidation behavior at 1 100℃ and tensile deformation behavior at the range of 20℃ to 1 100℃ of solution strengthening XG3232 wrought superalloy were investigated systematically by optical microscopy,scanning electron microscopy,X-ray diffraction and elevated temperature mechanical testing machine.The results show that the oxide film consisting of Cr2O3,NiO and (Ni,Mn,Cr)3O4 is formed on the alloy surface at the initial stage of oxidation.After long time oxidation,the oxide film transforms form monolayer to bilayer,and continuous Cr2O3 film forms in inner layer and compact NiO oxide film restrained volatile of inner layer Cr2O3 forms in outer layer.The superalloy exhibits a strength of 131 MPa and elongation of 66.2％ at 1 100℃ in tensile test.The ultimate and yield strength of the alloy gradually decrease with increase of temperature when the temperature is below 650℃.Above 650℃,the ultimate strength decreases rapidly and the yield strength remains.Meanwhile,the elongation and section shrinkage varies slightly below 650℃ while increases rapidly above 650℃.关键词
Ni-Cr-W高温合金/高温氧化/拉伸性能/持久性能Key words
Ni-Cr-W superalloy/ Elevated temperature oxidation/ Tensile property/ Stress rupture property引用本文复制引用
李金山,胡锐,张绪虎,张铁邦,贾新潮..XG3232合金的高温力学性能[J].宇航材料工艺,2013,43(3):105-109,5.基金项目
国家自然科学基金(51171150)、凝固技术国家重点实验室自主开放课题(62-TP-2011) （51171150）
