RETRACTED: Effect of natural aging on the resistivity evolution during artificial aging of the Al–Zn–Mg–Zr alloy

✍ Scribed by Ashish Thakur; R. Raman; S.N. Malhotra

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 383 KB
• Volume: 194
• Category: Article
• ISSN: 0924-0136
• DOI: 10.1016/j.jmatprotec.2007.04.104

✦ Synopsis

The effect of natural aging on the aging response of the Al-Zn-Mg-Zr alloy AA7020 was studied using low-temperature electrical resistivity measurements. Two experimental conditions were examined: (i) natural aging for 2 weeks followed by artificial aging in the temperature range of 90-160 • C and (ii) natural aging for variable periods followed by aging at 160 • C. The resistivity variation during underaging and overaging periods was discussed in relation to the microstructural evolution.