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On the Phenomenon of Stress Drop During Hot Deformation of ZrTiAlV Alloy

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Abstract

Hot deformation behaviors of 47Zr-45Ti-5Al-3V alloys with different grain sizes were investigated by compression tests. The flow curves exhibited a pronounced stress drop at the very beginning of deformation. The magnitude of the stress drop increased with the decreasing deformation temperature and the increasing strain rate. The sudden stress drop may be associated with the disappearance of mobile dislocations in the grain boundaries. Larger initial grain size increased the flow stress, promoted the stress drop, and enhanced the activation energy of deformation.

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This study was supported by the National Basic Research Program of China (Grant No. 2010CB731606).

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Authors and Affiliations

  1. Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao, 066004, P.R. China

    Yuanbiao Tan (Ph.D. Student), Wenchang Liu (Professor), Hui Yuan (Associate Professor), Riping Liu (Professor) & Xiangyi Zhang (Professor)

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  1. Yuanbiao Tan
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  2. Wenchang Liu
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  3. Hui Yuan
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Correspondence to Wenchang Liu.

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Manuscript submitted June 26, 2013.

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Tan, Y., Liu, W., Yuan, H. et al. On the Phenomenon of Stress Drop During Hot Deformation of ZrTiAlV Alloy. Metall Mater Trans A 44, 5284–5288 (2013). https://doi.org/10.1007/s11661-013-2018-y

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