超声冲击改善P355NL1钢焊接接头腐蚀疲劳性能研究
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王永祥, 何柏林, 李力
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Improvement of Corrosion Fatigue Performance of P355NL1 Steel Welded Joint by Ultrasonic Impact
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WANG Yongxiang, HE Bolin, LI Li
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表3 超声冲击试样在6%NaCl介质中的疲劳寿命
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Table 3 Fatigue lifes of ultrasonic impact treated specimens in 6%NaCl medium
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Sample number | Stress range | Cycle times | Fracture location |
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1 | 310 | 1.08×106 | Soldering seam | 2 | 300 | 1.50×106 | Soldering seam | 3 | 290 | 3.40×106 | Soldering seam | 4 | 280 | 5.04×106 | Base metal | 5 | 270 | 6.33×106 | Soldering seam | 6 | 260 | 9.20×106 | Base metal | 7 | 250 | 1.03×107 | Base metal | 8 | 240 | 2.40×107 | Soldering seam | 9 | 230 | 4.30×107 | Soldering seam | 10 | 220 | 1.20×108 | Soldering seam | 11 | 215 | 5.46×108 | Soldering seam | 12 | 210 | 1.00×109 | Not broken | 13 | 210 | 1.00×109 | Not broken |
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