Effects of Ru on Solidification Characteristic and Microstructures of Ni-Based Single Crystal Superalloy

作     者：SHI Zhen-xue LI Jia-rong LIU Shi-zhong WANG Xiao-guang YUE Xiao-dai 

作者机构：Science and Technology on Advanced High Temperature Structural Materials LaboratoryBeijing Institute of Aeronautical Materials 

出 版 物：《Journal of Iron and Steel Research International》 (国际钢铁研究杂志)

年 卷 期：2013年第20卷第3期

页      面：74-78页

核心收录：

学科分类：080602[工学-钢铁冶金] 08[工学] 0806[工学-冶金工程] 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：Ru single crystal superalloy solidification microstructure 

摘      要：The Ru-free and Ru-containing single crystal superalloys were cast in the directionally solidified furnace,while other alloying element contents were basically kept *** effects of Ru on the solidification characteristic and microstructures of single crystal superalloy were investigated with differential scanning calorimetry,electron probe micro analyzer,energy-dispersive X-ray spectroscope,scanning electron microscope and transmission electron *** results show that the liquidus temperature of the single crystal superalloy decreases with Ru *** primary dendrite arm spacing and volume fraction of γ/γ＇ eutectic both decrease with Ru *** sizes of γ＇ phase of dendritic core and interdendritic region have no obvious change with Ru *** tends to segregate slightly in the dendritic *** extent of elements segregation decreases with the Ru *** tends to partition preferentially into the γ *** addition of Ru decreases the partition ratio（the ratio of the γ phases composition over the γ＇ phases composition） of elements Re,W and Mo.