Journal of Materials Science

, Volume 54, Issue 7, pp 5757–5772 | Cite as

Effect of 0.4 wt% yttrium addition and heat treatment on the high-temperature compression behavior of cast AZ80

  • Lingbao RenEmail author
  • Mingyang Zhou
  • Yuwenxi Zhang
  • Carl J. Boehlert
  • Gaofeng QuanEmail author


The effects of 0.4 wt% yttrium (Y) addition, annealing, and annealing + aging on the hot compression behavior of cast AZ80 were studied at strain rates between 10−4 and 10−2 s−1 and temperatures ranging between 573 and 673 K. The apparent activation energies of the as-cast AZ80 and AZ80 + 0.4Y were 122 and 182 kJ/mol, respectively. Shear bands formed in each alloys. Compared with the as-cast AZ80, more shear bands formed, and a larger volume of cracks initiated and propagated from the grain boundaries and shear bands in as-cast AZ80 + 0.4Y. In general, Y addition increased the peak stress at lower temperatures and higher strain rates. The annealed and annealed + aged alloys exhibited more shear bands and larger compressive peak stresses than their respective as-cast counterparts after compression at 573 K, 10−2 s−1. There were more shear bands in the annealed and annealed + aged AZ80 + 0.4Y compared with AZ80 after compression at 573 K, 10−2 s−1. Fine precipitates appeared in the shear bands of AZ80 + 0.4Y. The average width of the shear bands increased with increasing temperature and decreasing strain rate, and the angles of intersection between the different shear bands were approximately 90°.



This work was supported by the China Scholarship Council (201707000086) and Key Development Project of Sichuan Province (2017GZ0399). Acknowledgements are given to 2015 Cultivation Program for the Excellent Doctoral Dissertation of Southwest Jiaotong University (received by Lingbao Ren), the Program of the 2015 Doctoral Innovation Fund of Southwest Jiaotong University (received by Lingbao Ren), and the support from Litmat Technology Chengdu Co., Ltd.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Authors and Affiliations

  1. 1.Key Laboratory of Advanced Technologies of MaterialsMinistry of EducationChengduPeople’s Republic of China
  2. 2.School of Materials Science and EngineeringSouthwest Jiaotong UniversityChengduPeople’s Republic of China
  3. 3.Department of Chemical Engineering and Materials ScienceMichigan State UniversityEast LansingUSA

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