Acta Metallurgica Sinica (English Letters) ›› 1995, Vol. 8 ›› Issue (1): 1-9.

• Research paper •     Next Articles

CRACK TIP STRUCTURE AND DUCTILE-BRITTLE TRANSITION IN BULK SINGLE CRYSTALS

HA Kuan fu; WANG Xiuhua (Jilin University, Changchun. 130023. China Manuscript received 26 December. 1994)   

  • Received:1995-02-25 Revised:1995-02-25 Online:1995-02-25 Published:2009-10-10

Abstract: Based on the crack tip structure a new model of ductile -brittle transition was proposed. Using this new model we calculated the dependence of the transition temperature-strain rate over a wide range of strain rate. Finally the significance of this new model is discussed in detail.

Key words: fracture mechanics, disllocation, dislocation free zone. crack tip, ductile-brittle transition