Neutrons, as a probe for studying defective functioning of temperature controller membranes
| Autor: | Gy. Mészáros, Erzsébet Sváb, M. Balaskó |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Austenite
Materials science Mechanical Engineering Neutron imaging Neutron diffraction Metallurgy technology industry and agriculture General Physics and Astronomy law.invention Membrane Mechanics of Materials law Ferrite (iron) Phase (matter) biological sciences lipids (amino acids peptides and proteins) General Materials Science Neutron Crystallization Composite material |
| Zdroj: | Nondestructive Testing and Evaluation. 18:43-49 |
| ISSN: | 1477-2671 1058-9759 |
| DOI: | 10.1080/10589750290013541 |
| Popis: | Neutron radiography and diffraction measurements were performed on temperature controller membranes in order to detect the origin of their defective functioning. The inner working processes were visualized in the thin channels of the sensor tubes by dynamic neutron radiography and the crystal structure characteristics of the stainless steel membrane were analysed by neutron diffraction. The coexistence of ferrite ( f ) and austenite ( n ) was identified in the membrane material. Structural changes caused by the applied technological processes were observed. As an effect of pressing, crystallization from the face-centred-cubic (FCC) n -phase to the body-centred-cubic (BCC) f -phase was observed that may lead to the formation of internal stresses, dislocations causing fragility of the membranes. |
| Databáze: | OpenAIRE |
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