THERMAL FATIGUE OF TI-24AL-11NB SCS-6

被引：49

作者：

RUSS, SM

机构：

[1] Wright Research and Development Center, Materials Laboratory, WRDC/MLLN, 45433, OH, Wright-Patterson Air Force Base

来源：

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1990年 / 21卷 / 06期

关键词：

D O I：

10.1007/BF02672575

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of thermally cycling in air with no applied load was studied using the Ti-24A1-11Nb (atomic percent)/SCS-6 composite system. Mechanisms of damage determination were observable cracking and residual tensile properties. Either the number of cycles or the temperature range was varied from specimen to specimen. Effects of number of cycles were investigated using a temperature range of 150 °C to 815 °C. Comparisons of temperature range effects were made at a constant cycle count of 500. Matrix cracking was observed at a †T of 450 °C and greater when oxidation was significant. Transverse cracking was not observed in specimens that were cycled to maximum temperatures where oxidation was insignificant, even for †T's as large as 500 °C. A decrease in tensile properties coincided with the observed transverse matrix cracking. © 1990 The Metallurgical of Society of AIME.

引用

页码：1595 / 1602

页数：8

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