中國有色金屬學報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 9 No. 1 March 1999 |
AGEING CHARACTERISTICS AND MICROSTRUCTURE OF Al-Mg-Li ALLOYS CONTAINING SMALL AMOUNT OF SILVER①
Chen Zhiguo and Zheng Ziqiao
（Department of Materials Science and Engineering,Central South University of Technology, Changsha 410083, P. R. China）
Abstract:The ageing behavior and microstructures of the Al-Mg-Li alloys containing small amounts of silver have been studied. The results showed that small quantities of silver could modify the ageing characteristics of Al-Mg-Li alloys, enhance the peak hardness and strength, and delay the ageing peaks. X-Ray diffraction analysis showed thatTphase was present in the Al-Mg-Li alloy containing 0.52%(mass fraction, %) Ag, and TEM observations showed that silver prevented the growth ofδ′phase during ageing.
Key words: Al-Li alloy ageing microstructure silver
