Abstract
High strength tungsten alloys with different deformation of 20%, 40%, 50% and 60% were prepared by swaging, and the impact strength and impact fracture morphologies were tested and observed respectively by Charpy tester and SEM to study the influence of deformation degree on fracture behavior. The results show that with the deformation degree increasing from 20% to 40%, 50% and 60%, the toughness reduces from 99J to 51J, 43J and 29J. The fracture mode of impact changes from intergranular to cleavage fracture.
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