超声冲击改善P355NL1钢焊接接头腐蚀疲劳性能研究

王永祥, 何柏林, 李力

Improvement of Corrosion Fatigue Performance of P355NL1 Steel Welded Joint by Ultrasonic Impact

WANG Yongxiang, HE Bolin, LI Li

表2 焊态试样在6%NaCl介质中的疲劳寿命

Table 2 Fatigue lifes of joint specimens in 6%NaClmedium

Sample number Stress range Cycle times Fracture location 1 215 6.00×105 Weld toe 2 210 1.60×106 Weld toe 3 200 3.00×106 Weld toe 4 190 4.12×106 Weld toe 5 180 1.30×106 Weld toe 6 170 1.62×107 Weld toe 7 160 1.80×107 Weld toe 8 150 2.16×107 Weld toe 9 140 2.76×107 Weld toe 10 130 7.20×107 Weld toe 11 120 2.08×108 Weld toe 12 115 5.00×108 Weld toe 13 110 1.00×109 Not broken