Effect of nanopowdered refractory compound on refinement of solidifying structure and properties of K403 superalloy

摘要：

The effects of nanopowdered refractory compound as the modifying agent on solidification structure and mechanical properties of superalloy K403 were investigated. The results show that the modifying agent causes integral refinement of the grain structure and the carbide of K403 superalloy in castings,the macrograin size refined from 5-10 mm without modifying to uniform 3 mm and less,the car bide size refined from 40-60 μm to 10 μm. And these result in significant improvement of the mechanical properties,the LCF at 600 ℃ increased by 2.7 times,and the stress rupture life at 975 X.increased by 40% ,and the elongation doubled.

关键词： nanopowder superalloy K4O3 solidification structure mechanical properties

作者: CAO Lamei A.H.Cherepanov TANG Xin GU Huaipeng LI Ailan ZHANG Yong

作者单位: National Key Laboratory of Science and Technology on Advanced High Temperature Structural Materials, Khristianovich Institute of Theoretical and Applied Mechanics SB RAS 630090,Novosibirsk,Russia

会议类型: 国际会议

会议名称: The 10th China-Russia System on Advanced Materials and Technologies(第十届中俄新材料新工艺研讨会)

会议地点: 浙江嘉兴

会议语种:英文

页码: 642-645

在线出版日期: 2009-10-20（万方平台首次上网日期，不代表论文的发表时间）