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作者:

Jian, Ningning (Jian, Ningning.) | Chai, Lihua (Chai, Lihua.) | Chang, Zhilong (Chang, Zhilong.) | Shi, Guodong (Shi, Guodong.) | Li, He (Li, He.) | Jin, Tounan (Jin, Tounan.) | Chen, Ziyong (Chen, Ziyong.) (学者:陈子勇) | Wang, Haijing (Wang, Haijing.)

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CPCI-S

摘要:

This study aimed to explore the correlation among forging process, structure and mechanical performance of advanced 2219 aluminum alloy forged ring. The microstructure of the alloy forged ring in tangential, radial and axial were analyzed by Optical microscope (OM), Scanning electron microscopy (SEM), Energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD) test. The results show that the microstructure of 2219 aluminum alloy forged ring is a plate-like structure and the precipitation phases distributed along the rolling direction. Among which, fine Al2Cu particles uniformly distribute in the grain. The hardness and tensile performance of the forged ring in the tangential, radial and axial directions was tested. The results indicate that the hardness perpendicular to the axial plane is 153.7HV, and the tensile performance of the alloy along the tangential direction is the highest. By observing the microstructure of the fracture, it is founded that the dimple in the tangential is deeper and smaller, and the elongation in tangential are higher than those in the axial and radial. The UTS (ultimate tensile strength) of the forged ring is more than 400 MPa, and the YST (yield tensile strength) is more than 300 MPa. an elongation of more than 10% is obtained. No anisotropy is found on both the microstructure and mechanical performance. The results indicate that the 2219 aluminum alloy forged ring can be applied on the multi-directional bearing structure parts.

关键词:

Mechanical properties 2219 aluminum alloy Deformation Microstructure

作者机构:

  • [ 1 ] [Jian, Ningning]Beijing Univ Technol, Sch Mat Sci & Engn, Beijing 100124, Peoples R China
  • [ 2 ] [Chai, Lihua]Beijing Univ Technol, Sch Mat Sci & Engn, Beijing 100124, Peoples R China
  • [ 3 ] [Shi, Guodong]Beijing Univ Technol, Sch Mat Sci & Engn, Beijing 100124, Peoples R China
  • [ 4 ] [Li, He]Beijing Univ Technol, Sch Mat Sci & Engn, Beijing 100124, Peoples R China
  • [ 5 ] [Jin, Tounan]Beijing Univ Technol, Sch Mat Sci & Engn, Beijing 100124, Peoples R China
  • [ 6 ] [Chen, Ziyong]Beijing Univ Technol, Sch Mat Sci & Engn, Beijing 100124, Peoples R China
  • [ 7 ] [Wang, Haijing]Beijing Univ Technol, Sch Mat Sci & Engn, Beijing 100124, Peoples R China
  • [ 8 ] [Chang, Zhilong]Beijing Engn Res Inst Aerosp Syst, Beijing 100076, Peoples R China

通讯作者信息:

  • [Chai, Lihua]Beijing Univ Technol, Sch Mat Sci & Engn, Beijing 100124, Peoples R China

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来源 :

HIGH PERFORMANCE STRUCTURAL MATERIALS

年份: 2018

页码: 189-198

语种: 英文

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