刘新权, 杨钢, 吴兴惠, et al. Effect of Long-Term Aging at 620 T on Structure and Mechanical Properties of a New Ferrite Heat Resistant Steel 1Cr11Co3W3MoVNbNB[J]. Special Steel, 2010, 31(5): 67-70.
刘新权, 杨钢, 吴兴惠, et al. Effect of Long-Term Aging at 620 T on Structure and Mechanical Properties of a New Ferrite Heat Resistant Steel 1Cr11Co3W3MoVNbNB[J]. Special Steel, 2010, 31(5): 67-70.DOI:
The effect of long-term aging at 620 ℃ on structure and mechanical properties of a new ferrite heat resistant steel 1Cr11Co3W3MoVNbNB (%: 0.10C
11.08Cr
3.20Co
2.54W
0.52Ni
0.15Mo
0.09Nb
0.21N
0.014B) oil-quenched at 1100 °C + high temperature tempered at 720 ℃. has been studied by using X-ray diffraction method
optical
scanning electron and transmission electron microscope. Results show that with aging at 620 ℃ for 2000 h
the aging time isn't obvious effect on the mechanical properties of the steel at ambient and at 620 °C ; during aging the main precipitated phases are M
23
C
6
Nb(CN) and M
3
B
2
and the structure of steel is stable and the lath sub-structure has not changed obviously; The elements Mo
W and V in solid s
olution mainly precipitate into precipitated phase in aging process and the elements Nb and B mainly precipitate in high temperature tempering and in initial period of aging.