The influence of treated time of standard treated process 980 ℃ 1 h solid solution-825 ℃ 2. 5 h stabilizing- 720 ℃ 8 h +620 ℃ 8 h aging on the structure and properties of IN706 alloy (/% ：0. 03C

41Ni

16Cr

l. 6Ti

2. 9Nb) is studied. The results show that with the increase of the solid solution treatment time (1 ~3 h)

the grain size of the alloy will be affected to a certain extent

thereby affecting the properties of the alloy； with the increase of the stabilizing treatment time (2. 5 ~5 h)

the precipitation of η increases

which leads to the reduction of strengthening phase forming elements

strength

plasticity and toughess of the alloy. Increasing the time of primary (8 ~18 h) and (8 ~36 h) secondary aging treatment will promote the precipitation of γ" and γ’ 

and their morphology will also change

which will affect the properties of the alloy. But with solid solution for 1 ~3 h

stabilizing for 2. 5 ~5 h

primary aging for 8 ~18 h

secondary aging for 8 -36 h

the alloy mechanical properties all meet requirement of standard.