Microstructure of Cyclically Deformed Titanium with Low Hydrogen Concentration      I.

Acta Metall Sin

2004, Vol. 40

Issue (3): 235-240 DOI:

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Microstructure of Cyclically Deformed Titanium with Low Hydrogen Concentration I.

CHEN Changqiang; LI Shouxin; LI Guangyi; AI Suhua

Shenyang National Laboratory for Materials Science; Institute of Metal Research; The Chinese Academy of Sciences

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CHEN Changqiang; LI Shouxin; LI Guangyi; AI Suhua. Microstructure of Cyclically Deformed Titanium with Low Hydrogen Concentration I.. Acta Metall Sin, 2004, 40(3): 235-240 .

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Abstract Cyclic testes were conducted on commercially pure titanium with low hydrogen concentration, in which  hydrides dispersed homogenously. It was found that dislocations can transfer through the coherent interface only before the hydride was fragmented, after fragmentation, dislocations would tangle at the fragments and do not penetrate the interface again due to the decrease of the maximum stress in the fragments. At least three sets of dislocations can be activated in hydrides during the cyclic deformation. To accommodate the inhomogenous strain between the matrix and hydrides, the crystal rotation occurred in both of them. A mechanism for the crystal rotation has been proposed.

Key words: titanium hydride cyclic

Received: 07 April 2003

ZTFLH:	TG113.25
	TG115.21

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