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| DELAYED CRACKING INDUCED BY CONSTANT MAGNETIC FIELD IN HUMID AIR FOR (Tb,Dy)Fe2 MAGNETOSTRICTIVE ALLOY |
| Niu E |
| 北京科技大学材料物理系 |
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Cite this article:
Niu E. DELAYED CRACKING INDUCED BY CONSTANT MAGNETIC FIELD IN HUMID AIR FOR (Tb,Dy)Fe2 MAGNETOSTRICTIVE ALLOY. Acta Metall Sin, 2006, 42(4): 369-373 .
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Abstract In situ observation of delayed propagation of unloaded indentation crack in humid air, as well as delayed domain change and delayed cracking induced by constant magnetic field in humid air for (Tb,Dy)Fe2 magnetostrictive alloy have been investigated using differential inference contrast microscope. The results showed that a residual stress during indenting could cause delayed propagation of unloaded indentation crack in humid air. A magnetic field exceeded a threshold field Hth caused instant propagation of indentation crack. A constant magnetic field below Hth could cause delayed change of domain configuration in humid air and delayed propagation of indentation crack in humid air.
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Received: 08 August 2005
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