Hydrogen induced cracking in (Al-Ti)SiCp spray atomized and codeposited alloys

D. Eliezer, E. Abramov, G. Solovioff, E. J. Lavernia, F. H. Froes

Research output: Contribution to conferencePaperpeer-review

Abstract

Early research and development efforts on powder metallurgy aluminum alloys yielded encouraging results. Later techniques, such as rapid solidification and mechanical alloying, have focused attention on the prospects for the development of new engineering alloys which have properties superior to those currently available. Among the family of transition metal high temperature alloys, Al-Ti alloys are actively being studied because of their attractive combination of elevated temperature properties and their potential candidacy as matrix materials in metal matrix composites (MMCs). The present study characterizes the microstructures of spray atomized and co-deposited metal matrix composites (MMCs) following hydrogen charging. The matrix and the precipitates were identified by a TEM-SAD pattern analysis. It does appear that the cohesion along the incoherent interfaces between the reinforcement particulates and the matrix was reduced by the presence of hydrogen. The phenomena and possible mechanisms of hydrogen embrittlement are discussed in detail.

Original languageEnglish
Pages201-209
Number of pages9
StatePublished - 1 Dec 1997
EventProceedings of the 1997 5th International Conference on Advanced Particulate Materials & Processes - West Palm Beach, FL, USA
Duration: 7 Apr 19979 Apr 1997

Conference

ConferenceProceedings of the 1997 5th International Conference on Advanced Particulate Materials & Processes
CityWest Palm Beach, FL, USA
Period7/04/979/04/97

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