Void formation in NiTi shape memory alloys by medium-voltage electron irradiation

Journal Article · Fri Dec 15 00:00:00 EST 1995 · Scripta Metallurgica et Materialia

DOI:https://doi.org/10.1016/0956-716X(95)00452-2· OSTI ID:136958

Schlossmacher, P; Stober, T ^[1]

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1. Forschungszentrum Karlsruhe GmbH (Germany). Inst. fuer Materialforschung I

In-situ electron irradiation experiments of NiTi shape memory alloys, using high-voltage transmission electron microscopes, result in amorphization of the intermetallic compound. In all of these experiments high-voltages more than 1.0 MeV had to be applied in order to induce the crystalline-to-amorphous transformation. To their knowledge no irradiation effects of medium-voltage electrons of e.g. 0.5 MeV have been reported in the literature. In this contribution, the authors describe void formation in two different NiTi shape memory alloys, resulting from in-situ electron irradiation, using a 300 kV electron beam in a transmission electron microscope. First evidence is presented that void formation is correlated with the total oxygen content of the alloys.

• OSTI ID: 136958
• Journal Information: Scripta Metallurgica et Materialia, Vol. 33, Issue 12; Other Information: PBD: 15 Dec 1995
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
NICKEL ALLOYS
PHYSICAL RADIATION EFFECTS
TITANIUM ALLOYS
INTERMETALLIC COMPOUNDS
SHAPE MEMORY EFFECT
EXPERIMENTAL DATA
CHEMICAL COMPOSITION
VACANCIES