EFFECT OF INCLUSIONS ON THE SOFTENING MECHANISM OF Al 1235 ALLOY DURING THERMAL DEFORMATION

  • Wenduan Yan Minnan University of Science and Technology, Quanzhou 362700, China
  • Gaosheng Fu Fuzhou University, Fuzhou 350108, China
  • Hao Huang Minnan University of Science and Technology, Quanzhou 362700, China
  • Mingdeng Zhong Minnan University of Science and Technology, Quanzhou 362700, China
Keywords: Al 1235 alloy, TEM, softening mechanism, oxide inclusions, second-phase particles

Abstract

The effect of inclusions on the softening mechanism of a pure aluminum alloy is studied with TEM, EDAX and SAED. Oxide inclusions and iron-rich second-phase particles are the main inclusions in Al 1235 alloy. The phase of iron-rich particles in the alloy is phase AlFe3 with a lattice constant of 5.79 and crystal band axis of Š 231Æ. During thermal deformation, coarser inclusions in the alloy are beneficial to the nucleation of dynamic recrystallization, but they have a great effect on the separation of the alloy matrix. Nucleation and growth of dynamic-recrystallization grains are restricted by finer inclusions, reducing the possibility of aluminum-matrix fracture. The preferred places for dynamic-recrystallization nucleation include boundaries at the intersection of three grains, the dislocation plug area, the surface of the coarse oxide inclusions or the coarse second-phase inclusions.

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Published
2022-06-03
How to Cite
1.
Yan W, Fu G, Huang H, Zhong M. EFFECT OF INCLUSIONS ON THE SOFTENING MECHANISM OF Al 1235 ALLOY DURING THERMAL DEFORMATION. MatTech [Internet]. 2022Jun.3 [cited 2024May28];56(3):289–294. Available from: https://mater-tehnol.si/index.php/MatTech/article/view/448