Open AccessStudy on quenching sensitivity of 7097 aluminum alloy
Author(s) -
Ping Xie,
Kanghua Chen,
Songyi Chen,
Shengping Ye,
Huibin Jiao,
Lanping Huang
Publication year - 2019
Publication title -
materials research express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 35
ISSN - 2053-1591
DOI - 10.1088/2053-1591/ab5987
Subject(s) - alloy , quenching (fluorescence) , materials science , isothermal process , aluminium , transmission electron microscopy , metallurgy , sensitivity (control systems) , thermodynamics , nanotechnology , physics , quantum mechanics , electronic engineering , engineering , fluorescence
The time-temperature-property (TTP) and the time-temperature-transformation (TTT) curves of 7097 aluminum alloy are determined by interrupted quenching experiments in order to investigate the quench sensitivity. The quenching sensitive zone is 230 °C–370 °C, and the nose temperature and transformation time are about 320 °C and 1.2 s, respectively. The evolution of quench-induced precipitates during different isothermal temperatures treatment has been observed by the transmission electron microscope. The number and size of quench-induced precipitates are gradually increased with the extension of isothermal holding time. Moreover, the quenching sensitivity of 7097 aluminum alloy is lower than that of 7055 aluminum alloy and 7050 aluminum alloy, but higher than that of 7085 aluminum alloy, and the influence of alloy composition on the quenching sensitivity is investigated.