911½ñÈÕºÚÁÏ

HexMat researcher Zebang Zheng wins first prize for best scientific content in this year's 911½ñÈÕºÚÁÏ College Materials Postgraduate Research Day.

Zebang’s work addresses the problem of cold dwell fatigue in aero-engine titanium components. He has established new discrete dislocation plasticity techniques which allow for slip transfer at grain boundaries. The example in Fig. 1 shows the resulting stress development in a Ti polycrystal when slip transfer is permitted. The prize was awarded by the Head of Department, Professor Peter Haynes (Fig. 2).

Fig. 1 Axial (horizontal) stresses developed in a Ti polycrystal  after dwell (stress hold) using discrete dislocation modelling with grain boundary slip transfer

Fig. 2 Professor Haynes presenting First Prize to Zebang Zheng for best scientific content.