Tensile creep aging treatment was conducted with 2124 aluminum alloy plate on the RWS electronic creep-relaxation testing machine with aging at 185℃ for 5

15 hours and 150

2

50 MPa to obtain creep strain of the alloy at different aging time and stress. Microstructure and ambient hardness of the alloy with aging at 185℃ for 8 hours and 12 hours as well as 200

2

50 MPa were presented by OM （optical microscope） and the Vickers hardness testing. The results show that material forming is closely related to aging time and stress. At a given 200MPa stress

hardness of the alloy is increased with increasing in aging time at 185 ℃ for 0

1

5 hours

and maximum hardness value of the alloy reaches up to 136.7 Hv for 15 hours. Creep rate

strain rate and grain size in the alloy are increased with the increase of aging time and stress.