低碳低合金钢焊缝熔覆金属针状铁素体的回火稳定性

胡富昇, 成林, 侯廷平, 程石, 宋峰雨, 吴开明

High-Temperature Stability of Acicular Ferrite in a Low-Carbon Low-Alloy Steel Weld Metal

HU Fusheng, CHENG Lin, HOU Tingping, CHENG Shi, SONG Fengyu, WU Kaiming

图2 焊缝熔敷金属在焊态，580、610、640 ℃回火12 h，及670、700、730 ℃回火2 h后样品显微组织的OM像

Fig.2 OM images of weld metal specimens (a) as-welded (b-d) tempering at 580 oC (b), 610 oC (c), and 640 oC (d) for 12 h (e-g) tempering at 670 oC (e), 700 oC (f), and 730 oC (g) for 2 h