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Journal of Central South University

, Volume 24, Issue 5, pp 1034–1039 | Cite as

Effect of friction stir processing on microstructure and damping capacity of AZ31 alloy

  • Qian-hao Zang (臧千昊)
  • Hong-mei Chen (陈洪美)
  • Fang-yuan Lan (蓝方园)
  • Jing Zhang (张静)
  • Yun-xue Jin (金云学)
Article

Abstract

AZ31 alloy sheet fabricated by rolling was processed by friction stir processing (FSP) with different passes. The effect of FSP on the microstructure and damping capacity of AZ31 alloy sheet was discussed. The fine and equiaxed grains were obtained in the stirred zone (SZ) for FSPed samples from 1 pass to 3 passes with the average grain size of 10.6, 10.4 and 13.6 μm, respectively. The damping peak P1 was presented on the curves of temperature-dependent damping capacity for FSPed samples. The damping peak P2 was restrained after FSP and the damping peak P1 was a relaxation process. The FSPed samples (2-pass FSP and 3-pass FSP) obtained high damping capacity. The best damping values Q 0 -1 (ε=10-4) and damping values Q H -1 (ε=10-3) of the sample subjected to 3-pass FSP (0.0131 and 0.0496) increased by 33.7% and 157.0%, respectively.

Key words

Mg-Al-Zn alloy (AZ31) friction stir processing (FSP) damping peak G-L model 

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Copyright information

© Central South University Press and Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  • Qian-hao Zang (臧千昊)
    • 1
    • 2
  • Hong-mei Chen (陈洪美)
    • 1
    • 3
  • Fang-yuan Lan (蓝方园)
    • 1
  • Jing Zhang (张静)
    • 1
  • Yun-xue Jin (金云学)
    • 1
  1. 1.Provincial Key Lab of Advanced Welding TechnologyJiangsu University of Science and TechnologyZhenjiangChina
  2. 2.Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials of Ministry of EducationShandong UniversityJinanChina
  3. 3.National Demonstration Center for Experimental Materials Science and Engineering Education (Jiangsu University of Science and Technology)ZhenjiangChina

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