Fracture test of the BT20 indicates that brittle unstable fracture occurs after ductile crack initiation and slow propagation for all the compact tension (ct) specimens.
BT 20钛合金断裂试验表明，CT试样均在裂纹延性启裂并缓慢扩展后，发生脆性失稳断裂。
It is shown that the proposed ductile fracture model can accurately and effectively predict the whole damage process of ductile metals including crack initiation, propagation and final fracture.
结果表明，该模型可很好地预测延性金属材料自裂纹萌生、扩展直至完全断裂的全过程。
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