Effect of tool rotational speed on the microstructures and tensile properties of 7075 aluminum alloy via Friction Stir Process (FSP)

Ming Hsiang Ku, Fei-Yi Hung, Truan-Sheng Lui, Li Hui Chen

研究成果: Conference contribution

摘要

7075-T6 aluminum alloy plates were subject to FSP with various tool rotational speeds (1230, 1450 and 1670 rpm) followed by different heat treatments (natural aging and T4T6 treatments). The influences of tool rotational speeds and aging treatments on the microstructures and tensile properties were discussed. The experimental results showed that the tensile strength of FSPed specimens with various tool rotational speeds were close. After aging treatments, higher tool rotational speeds (1670 rpm) had an embrittlement phenomenon on the SZ due to the contribution of low element bands (LEBs) and precipitates. EPMA analysis showed that the LEBs are low element distributions, such as Zn, Mg, Cu. Decreasing the tool rotational speeds, the LEBs were not obvious and restrained the brittle behavior to improve the ductility. Compared with natural aging, after T4T6 treatments, the tensile strength of FSP specimens with all tool rotational speeds was improved obviously.

原文English
主出版物標題Light Metals 2012 - Proceedings of the Technical Sessions Presented by the TMS Aluminum Committee at the TMS 2012 Annual Meeting and Exhibition
頁面475-480
頁數6
出版狀態Published - 2012 五月 16
事件Light Metals 2012 - TMS 2012 Annual Meeting and Exhibition - Orlando, FL, United States
持續時間: 2012 三月 112012 三月 15

出版系列

名字TMS Light Metals
ISSN(列印)0147-0809

Other

OtherLight Metals 2012 - TMS 2012 Annual Meeting and Exhibition
國家United States
城市Orlando, FL
期間12-03-1112-03-15

    指紋

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Metals and Alloys
  • Materials Chemistry

引用此

Ku, M. H., Hung, F-Y., Lui, T-S., & Chen, L. H. (2012). Effect of tool rotational speed on the microstructures and tensile properties of 7075 aluminum alloy via Friction Stir Process (FSP). 於 Light Metals 2012 - Proceedings of the Technical Sessions Presented by the TMS Aluminum Committee at the TMS 2012 Annual Meeting and Exhibition (頁 475-480). (TMS Light Metals).