超音速微粒轰击诱导表面纳米化对300M钢腐蚀疲劳行为的影响

熊毅, 栾泽伟, 马云飞, 厉勇, 查小琴

Effect of Surface Nanocrystallization Induced by Supersonic Fine Particles Bombardment on Corrosion Fatigue Behavior of 300M Steel

XIONG Yi, LUAN Zewei, MA Yunfei, LI Yong, ZHA Xiaoqin

图6 SFPB处理前后300M钢腐蚀疲劳断口形貌的SEM像(最大载荷σmax = 400 MPa，未处理试样腐蚀疲劳寿命N = 6.67 × 105 cyc，SFPB处理试样腐蚀疲劳寿命N' = 1.18 × 106 cyc，下同)

Fig.6 Corrosion fatigue fracture SEM images of 300M steel without (a, c, e, g) and with (b, d, f, h) SFPB treatment (σmax = 400 MPa, the life of samples without SFPB N = 6.67 × 105 cyc, the life of samples with SFPB N' = 1.18 × 106 cyc, the same below) (a) overall morphology before SFPB (b) overall morphology after SFPB (c) enlarged view of area I in Fig.6a (d) enlarged view of area I in Fig.6b (e) enlarged view of area II in Fig.6a (f) enlarged view of area II in Fig.6b (Inset shows the locally enlarged view) (g) enlarged view of area III in Fig.6a (h) enlarged view of area III in Fig.6b