CREEP DEFORMATION OF TIB2-REINFORCED NEAR-GAMMA TITANIUM ALUMINIDES

被引：77

作者：

KAMPE, SL ^{[1
]}

BRYANT, JD ^{[1
]}

CHRISTODOULOU, L ^{[1
]}

机构：

[1] ALLIED SIGNAL CORP,MET & CERAM LAB,MORRISTOWN,NJ 07962

来源：

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1991年 / 22卷 / 02期

关键词：

D O I：

10.1007/BF02656812

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The deformation behavior under creep conditions of several unreinforced and particulate (TiB2)-reinforced binary near-gamma titanium aluminide alloys has been examined. Material has been produced using both ingot- and powder-processing techniques, yielding material of varying microstructures and grain sizes. It has been found that the rate of deformation is strongly dependent on matrix grain size and microstructural stability. The presence of the dispersed phase dramatically impacts the microstructural character which evolves following isothermal forging, and this has been observed to strongly influence the creep behavior. Constitutive equations which describe the observed behavior indicate that the mechanism of creep deformation is the same for both the reinforced and unreinforced variants and is independent of processing route.

引用

页码：447 / 454

页数：8

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