Creep behavior of new kinds of Ni-Co-base superalloys

被引：53

作者：

Gu, Y. F. ^{[1
]}

Cui, C. ^{[1
]}

Ping, D. ^{[1
]}

Harada, H. ^{[1
]}

Fukuda, T. ^{[1
]}

Fujioka, J. ^{[1
]}

机构：

[1] Natl Inst Mat Sci, High Temp Mat Ctr, Tsukuba, Ibaraki 3050047, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2009年 / 510-11卷

关键词：

U720Li; Co-Ti alloy; Disk; Creep; Microstructure; SINGLE-CRYSTALS; INTERMEDIATE TEMPERATURES; ALLOYS; STRENGTH; COBALT; CLIMB;

D O I：

10.1016/j.msea.2008.04.128

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This paper concerns our recent work on developing a new kind of advanced disk alloys based on the mixtures of two kinds of two-phase superalloys, Co-base Co-16.9wt.%Ti and Ni-base U720Li superalloys, for the latest turbine design. The tensile creep behavior of these new Ni-Co-base superalloys at temperatures in the range of 650-760 degrees C and at initial applied stresses of 480-830 MPa were investigated. Comparing a new Ni-Co-base alloy (TMW-4) to U720Li by a Larson-Miller plot shows that a temperature gain in stress-rupture strength of 30 can be expected in a TMW alloy with fine-grained microstructure (10 (m). (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：250 / 255

页数：6

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