Depth-sensing indentation study of superconducting MgB2 wire
Superconducting MgB2 composite wire was prepared by packing blended MgB2 inside of Cu tubes using the powder-in-tube (PIT) method. Mechanical properties of the sample were then characterized by using a dynamic ultra-micro indentation experimental technique. The hardness (H) and the elastic modulus (...
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| Veröffentlicht in: | Materials characterization 2006-09, Vol.57 (3), p.166-170 |
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| container_title | Materials characterization |
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| creator | GÜCLÜ, N UZUN, O KÖLEMEN, U |
| description | Superconducting MgB2 composite wire was prepared by packing blended MgB2 inside of Cu tubes using the powder-in-tube (PIT) method. Mechanical properties of the sample were then characterized by using a dynamic ultra-micro indentation experimental technique. The hardness (H) and the elastic modulus (E) values were calculated by the method of Oliver and Pharr. It was found that both the hardness and the elastic modulus exhibit significant peak load dependence (i.e., indentation size effect (ISE)). The experimental hf/hmax values, lower than the critical value (0.875), indicate that the MgB2 wire shows work hardening behaviour. |
| doi_str_mv | 10.1016/j.matchar.2006.01.005 |
| format | Article |
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| subjects | Cross-disciplinary physics: materials science rheology Exact sciences and technology Materials science Phase diagrams and microstructures developed by solidification and solid-solid phase transformations Physics Solidification |
| title | Depth-sensing indentation study of superconducting MgB2 wire |
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