| 2205双相不锈钢焊接结构疲劳裂纹扩展速率研究 |
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| 引用本文： | 王智祥,张鑫,张继祥. 2205双相不锈钢焊接结构疲劳裂纹扩展速率研究[J]. 重庆交通大学学报(自然科学版), 2011, 30(4): 880-884. DOI: 10.3969/j.issn.1674-0696.2011.04.039 |
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| 作者姓名： | 王智祥 张鑫 张继祥 |
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| 作者单位： | 1. 重庆交通大学船舶工程中心,重庆,400074
2. 重庆交通大学机电与汽车工程学院,重庆,400074 |
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| 基金项目： | 重庆市科委重大科技攻关项目(ests2008ab3033) |
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| 摘 要： | 在不同应力比R下,采用标准SE(B)试样,在PLG -200高频试验机上对2205双相不锈钢的焊缝(WM)、热影响区(HAZ)和母材(BM)进行疲劳裂纹扩展速率试验,获得了2205双相不锈钢在各种应力比下的回归方程和扩展速率da/ dN与应力强度因子△K的关系曲线.结果表明:2205双相不锈钢焊接结构中焊缝裂纹扩展速率...
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| 关 键 词： | 双相不锈钢 焊接结构 疲劳裂纹扩展 |
Fatigue Crack Behavior of Welded Structure of Duplex Stainless Steel 2205 |
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| WANG Zhi-xiang,ZHANG Xin,ZHANG Ji-xiang. Fatigue Crack Behavior of Welded Structure of Duplex Stainless Steel 2205[J]. Journal of Chongqing Jiaotong University, 2011, 30(4): 880-884. DOI: 10.3969/j.issn.1674-0696.2011.04.039 |
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| Authors: | WANG Zhi-xiang ZHANG Xin ZHANG Ji-xiang |
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| Affiliation: | 1.Center of Vessel Engineering,Chongqing Jiaotong University,Chongqing 400074,China; 2.College of Mechantronics & Automobile Engineering,Chongqing Jiaotong University,Chongqing 400074,China) |
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| Abstract: | Take standard SE(B) as a sample,the fatigue crack growth behavior of weld metal(WM),heat affected zone(HAZ) and base metal(BM) of Duplex Stainless Steel 2205 were tested on PLG-200 fatigue testing machine under different stress ratios.Through regression analysis of experimental data,the regression equation and the curve of the propagation rate da/dN and the stress intensity factor ΔK were obtained.The results show that the fatigue crack growth rate of WM is the slowest and the ability to resist fatigue crack growth is the highest in the three parts while BM is just the opposite.Secondly,as for the sensitivity to the stress change,WM is the highest,then HAZ,and BM is the lowest. |
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| Keywords: | duplex stainless steel welded structure fatigue crack behavior |
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