Embrittlement of tungsten heavy alloys by trace impurities and their analytical characterization |
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| Authors: | H. Danninger A. Atari B. Lux E. Kny A. Tschulik |
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| Affiliation: | (1) Institut für Chemische Technologie anorganischer Stoffe, Technische Universität Wien, A-1060 Wien, Austria;(2) Metallwerk Plansee GmbH, A-6600 Reutte, Austria;(3) Institut für Allgemeine Physik, Technische Universität Wien, A-1060 Wien, Austria |
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| Abstract: | Summary The effects of various trace elements on properties and fracture modes of heavy alloys are described. It has been found that tungsten heavy alloys can be embrittled by traces of Al, Si and P, while various other impurities are ineffective. In all cases embrittlement is caused by deterioration of the interfacial strength between binder and W grains. Al is not embrittling itself but preserves the oxygen, which is the embrittling element. Fractography by SEM is recommendable for correctly assessing the significance of the AES results.
Versprödung von Wolfram-Schwermetallen durch Spurenverunreinigungen und ihre analytische Charakterisierung |
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