Effect of Ruthenium on Creep Strength of Ni-Base Single-Crystal Superalloys at 750 A°C and 750 MPa

被引：26

作者：

Tsuno, N. ^{[1
]}

Kakehi, K. ^{[1
]}

Rae, C. M. F. ^{[3
]}

Hashizume, R. ^{[2
]}

机构：

[1] Tokyo Metropolitan Univ, Dept Mech Engn, Tokyo 1920397, Japan

[2] Kansai Elect Power Co Inc, Power Engn R&D Ctr, Amagasaki, Hyogo 6610974, Japan

[3] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2009年 / 40A卷 / 02期

关键词：

HIGH-TEMPERATURE CREEP; GAMMA-PHASE; ORIENTATION; MECHANISMS;

D O I：

10.1007/s11661-008-9744-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of Ru on the creep behavior of two kinds of single-crystal Ni-base superalloys was studied at 750 A degrees C and 750 MPa to discern the benefit of Ru as a strengthening element. The addition of Ru decreased the primary creep strain and improved the creep strength. Further, the addition of Ru enhanced the dissociation of dislocations in the matrix channels. This inhibited the nucleation of the stacking fault ribbons and, as a result, impeded the operation of {111}a OE (c) 112 > slip.

引用

页码：269 / 272

页数：4