Creep Life Prediction of Thermally Exposed Rene 80 Superalloy

被引：21

作者：

Aghaie-Khafri, M. ^{[1
]}

Farahany, S. ^{[1
]}

机构：

[1] KN Toosi Univ Technol, Fac Mech Engn, Tehran, Iran

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2010年 / 19卷 / 07期

关键词：

creep; heat treating; mechanical testing; non-ferrous metals and alloys; scanning electron microscopy; superalloys; NICKEL-BASE SUPERALLOY; TURBINE-BLADES; HEAT-TREATMENT; REJUVENATION;

D O I：

10.1007/s11665-009-9584-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of long time thermal exposure on the microstructure and mechanical properties of Rene 80 superalloy were investigated by means of scanning electron microscopy and accelerated creep tests at 190 MPa and 980 degrees C. Results obtained showed that the rupture lives of pre-exposed samples decreased by increasing the exposure time or exposure temperature. In addition, as a new finding the concept of contour maps of the constant life and minimum creep rate were introduced. These maps were used to estimate the effect of exposure time and exposure temperature on the creep rupture life and minimum creep rate of thermally exposed samples.

引用

页码：1065 / 1070

页数：6

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