Abstract
Thick forgings of 7010 are prone to failure by stress corrosion cracking (SCC) especially when aged into the maximum strength tempers. Retrogression and reaging heat treatments (RRA) are said to enhance the SCC resistance of the 7XXX series alloys without compromising strength. The RRA treatments involve retrogressing material in the T6 temper at 180-240 °C for various times, and then reaging at 120 °C. 75 mm thick hand forged pieces of 7010 were subjected to a T6 treatment and retrogressed for various times. The samples were then reaged for 24 hours at 120 °C to determine the optimum RRA treatment. Material for DCB type SCC testing was then subjected to the RRA treatment. Hardness, tensile and fracture toughness property data for T6, T73 and RRA treated material is presented in conjunction with stress corrosion cracking resistance data.
| Original language | English |
|---|---|
| Pages (from-to) | 143-150 |
| Number of pages | 8 |
| Journal | Mechanical and corrosion properties. Series A, Key engineering materials |
| Volume | 99-100 |
| Publication status | Published - 1995 |
| Event | Proceedings of the 10th Irish Materials Forum Conference IMF10 - Coleraine, Irel Duration: 1 Sep 1994 → 1 Sep 1994 |