Effect of retrogression and reaging treatment on stress corrosion cracking resistance of 7075 aluminum alloy

Murat Baydogan, Huseyin Cimenoglu, E. Sabri Kayali, Jahan Rasty

Research output: Contribution to conferencePaper

Abstract

Effect of retrogression and reaging treatment on hardness and stress corrosion cracking resistance of 7075 aluminum alloy was investigated. As received 7075 alloys in T6 temper condition were retrogressed at 170, 220, 240 and 380°C for different durations between 15s and 60 min. Subsequent reaging was made at the T6 aging condition. Treated materials exhibited higher hardness and better stress corrosion cracking resistance than T6 temper in a wide range of retrogression temperature and time. The highest hardness was obtained after retrogression at 170°C for 210 s followed by reaging, corresponding to 20% hardness improvement. Improvement in stress corrosion cracking resistance of the alloy by as much as 85% was also observed. In this paper, improvements in hardness and stress corrosion cracking resistance are discussed on the basis of the microstructural changes during retrogression and reaging treatment.

Original languageEnglish
Pages181-188
Number of pages8
StatePublished - 2006
Event2006 TMS Annual Meeting - San Antonio, TX, United States
Duration: Mar 12 2006Mar 16 2006

Conference

Conference2006 TMS Annual Meeting
CountryUnited States
CitySan Antonio, TX
Period03/12/0603/16/06

Keywords

  • Aluminum
  • Corrosion
  • Reaging
  • Retrogression

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    Baydogan, M., Cimenoglu, H., Sabri Kayali, E., & Rasty, J. (2006). Effect of retrogression and reaging treatment on stress corrosion cracking resistance of 7075 aluminum alloy. 181-188. Paper presented at 2006 TMS Annual Meeting, San Antonio, TX, United States.