EFFECT OF ENVIRONMENT ON THE BRITTLE-TO-DUCTILE TRANSITION OF PRECRACKED NIAL SINGLE AND POLYCRYSTALS

被引：23

作者：

BERGMANN, G

VEHOFF, H

机构：

[1] Max-Planck-Institut für Eisenforschung GmbH, D-40237 Düsseldorf

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1995年 / 192卷

关键词：

NICKEL; ALUMINUM; CRYSTALS; CRACKING;

D O I：

10.1016/0921-5093(95)80018-2

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Hydrogen diffusion and solubility measurements on NiAl single and polycrystals have been performed as well as fracture toughness tests in various environments and after high-temperature charging. It was found that internal hydrogen lowers the grain boundary strength, while external hydrogen promotes stable crack growth in a small temperature region around the brittle-to-ductile transition temperature.

引用

页码：309 / 315

页数：7

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