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作者:

Hou, Xingkai (Hou, Xingkai.) | Qi, Peng (Qi, Peng.) | Li, Bolong (Li, Bolong.) | Wen, Shengping (Wen, Shengping.) | Wei, Wu (Wei, Wu.) | Qi, Yutong (Qi, Yutong.) | Yin, Jiaming (Yin, Jiaming.) | Nie, Zuoren (Nie, Zuoren.) (学者:聂祚仁)

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EI Scopus SCIE

摘要:

The precipitation and intergranular corrosion (IGC) behavior of Al-1.0Mg-0.6Si-Cu (wt.%) alloys with the addition of Cu ranged from 0.3 to 0.6 wt.% were investigated by optical microscope and transmission electron microscopy. The results indicated that the Cu addition significantly improves the hardness of the alloys during under-aging progress by accelerating the precipitation of GP zones. The addition of Cu has changed the composition of precipitation and facilitated the formation of beta ''-Mg5Si6 precipitates with high density and fine distribution. When the Cu content is added to 0.6 wt.%, the type of precipitation has changed. In addition to the needle-shaped beta '' phase, a new-plate Q ' phase precipitated during peak-aging conditions. The 0.6 wt.% Cu alloy shows superior strength with tensile yield strength of 328 MPa, ultimate tensile strength of 368 MPa, and elongation of 16.0%. However, the IGC resistance decreased with the Cu content increasing from 0.3 to 0.6 wt.%, which mainly resulted from the segregation of Cu elements and the formation of continuous Q ' precipitates at the grain boundaries.

关键词:

Corrosion Al-1 Aging hardening 0Mg-0 6Si-Cu alloy Precipitation behavior Mechanical properties

作者机构:

  • [ 1 ] [Hou, Xingkai]Beijing Univ Technol, Fac Mat & Mfg, Natl Engn Lab Ind Big Data Applicat Technol, Beijing 100124, Peoples R China
  • [ 2 ] [Qi, Peng]Beijing Univ Technol, Fac Mat & Mfg, Natl Engn Lab Ind Big Data Applicat Technol, Beijing 100124, Peoples R China
  • [ 3 ] [Li, Bolong]Beijing Univ Technol, Fac Mat & Mfg, Natl Engn Lab Ind Big Data Applicat Technol, Beijing 100124, Peoples R China
  • [ 4 ] [Wen, Shengping]Beijing Univ Technol, Fac Mat & Mfg, Natl Engn Lab Ind Big Data Applicat Technol, Beijing 100124, Peoples R China
  • [ 5 ] [Wei, Wu]Beijing Univ Technol, Fac Mat & Mfg, Natl Engn Lab Ind Big Data Applicat Technol, Beijing 100124, Peoples R China
  • [ 6 ] [Qi, Yutong]Beijing Univ Technol, Fac Mat & Mfg, Natl Engn Lab Ind Big Data Applicat Technol, Beijing 100124, Peoples R China
  • [ 7 ] [Nie, Zuoren]Beijing Univ Technol, Fac Mat & Mfg, Natl Engn Lab Ind Big Data Applicat Technol, Beijing 100124, Peoples R China
  • [ 8 ] [Yin, Jiaming]Aerosp Res Inst Mat & Proc Technol, Beijing 100076, Peoples R China

通讯作者信息:

  • [Li, Bolong]Beijing Univ Technol, Fac Mat & Mfg, Natl Engn Lab Ind Big Data Applicat Technol, Beijing 100124, Peoples R China;;[Nie, Zuoren]Beijing Univ Technol, Fac Mat & Mfg, Natl Engn Lab Ind Big Data Applicat Technol, Beijing 100124, Peoples R China;;

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来源 :

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING

ISSN: 0947-8396

年份: 2023

期: 4

卷: 129

2 . 7 0 0

JCR@2022

ESI学科: PHYSICS;

ESI高被引阀值:17

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SCOPUS被引频次: 1

ESI高被引论文在榜: 0 展开所有

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