退火对热老化308L不锈钢焊材显微结构的影响
林晓冬1,2,彭群家1,3(),韩恩厚1,柯伟1
Effect of Annealing on Microstructure of Thermally Aged 308L Stainless Steel Weld Metal
Xiaodong LIN1,2,Qunjia PENG1,3(),En-Hou HAN1,Wei KE1

图10. 7000 h热老化和退火试样中靠近相界处的δ铁素体一侧的贫Ni区

Fig.10. Atom maps and 1.5% isosurfaces of Ni at the vicinity of δ/γ phase boundary in the 7000 h aged (a) and annealed (b) specimens, both of which showing a Ni-depleted zone (NDZ) in δ-ferrite near the δ/γ phase boundary (The Ni content inside the isosurface is less than 1.5%. The volume analyzed is 88 nm×88 nm×40 nm and 70 nm×60 nm×30 nm, respectively)