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Effect of Tool Pin Eccentricity on the Microstructure and Mechanical Properties of Friction Stir Processed Al-6061 Alloy

Journal Article


Abstract


  • Three different stir tools with the pin eccentricity of 0, 0.4 and 0.8 mm were applied to the friction stir processing (FSP) of Al-6061 alloy. Results show that the pin-affected zone (PAZ) enlarges and the grain size in the stir zone (SZ) decreases as the pin eccentricity increases. Moreover, the low peak FSP temperature induced by the pin eccentricity gives rise to the coarsening of strengthening precipitates in the SZ. Compared with the pin-eccentric FSP samples, the SZ produced without pin eccentricity exhibits the highest hardness and yield strength due to the high amount of fine precipitates. However, the application of pin eccentricity elevates the overall tensile properties of FSP samples through changing the failure location from heat-affected zone (HAZ) to SZ.

Authors


  •   Chen, Yu (external author)
  •   Wang, He (external author)
  •   Ding, Hua (external author)
  •   Zhao, Jingwei
  •   Zhang, Fenghe (external author)
  •   Ren, Zhaohui (external author)

Publication Date


  • 2019

Citation


  • Chen, Y., Wang, H., Ding, H., Zhao, J., Zhang, F. & Ren, Z. (2019). Effect of Tool Pin Eccentricity on the Microstructure and Mechanical Properties of Friction Stir Processed Al-6061 Alloy. Journal of Materials Engineering and Performance, 28 (5), 2845-2852.

Scopus Eid


  • 2-s2.0-85064244892

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/2887

Number Of Pages


  • 7

Start Page


  • 2845

End Page


  • 2852

Volume


  • 28

Issue


  • 5

Place Of Publication


  • United States

Abstract


  • Three different stir tools with the pin eccentricity of 0, 0.4 and 0.8 mm were applied to the friction stir processing (FSP) of Al-6061 alloy. Results show that the pin-affected zone (PAZ) enlarges and the grain size in the stir zone (SZ) decreases as the pin eccentricity increases. Moreover, the low peak FSP temperature induced by the pin eccentricity gives rise to the coarsening of strengthening precipitates in the SZ. Compared with the pin-eccentric FSP samples, the SZ produced without pin eccentricity exhibits the highest hardness and yield strength due to the high amount of fine precipitates. However, the application of pin eccentricity elevates the overall tensile properties of FSP samples through changing the failure location from heat-affected zone (HAZ) to SZ.

Authors


  •   Chen, Yu (external author)
  •   Wang, He (external author)
  •   Ding, Hua (external author)
  •   Zhao, Jingwei
  •   Zhang, Fenghe (external author)
  •   Ren, Zhaohui (external author)

Publication Date


  • 2019

Citation


  • Chen, Y., Wang, H., Ding, H., Zhao, J., Zhang, F. & Ren, Z. (2019). Effect of Tool Pin Eccentricity on the Microstructure and Mechanical Properties of Friction Stir Processed Al-6061 Alloy. Journal of Materials Engineering and Performance, 28 (5), 2845-2852.

Scopus Eid


  • 2-s2.0-85064244892

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/2887

Number Of Pages


  • 7

Start Page


  • 2845

End Page


  • 2852

Volume


  • 28

Issue


  • 5

Place Of Publication


  • United States