| 2205DSS焊接接头腐蚀疲劳性能分析 |
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| 引用本文： | 王智祥,张瑶,张继祥.2205DSS焊接接头腐蚀疲劳性能分析[J].焊接学报,2014,35(5):67-70. |
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| 作者姓名： | 王智祥 张瑶 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 |
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| 基金项目： | 重庆市科委重大科技攻关资助项目(ests2008ab3033) |
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| 摘 要： | 对川东船厂制造化学品船所用的国产2205DSS常用焊接接头在模拟海水环境中的腐蚀疲劳性能进行了试验研究.通过Origin软件对试验数据进行非线性拟合得到了环境温度分别在24,30和40℃、加载应力比为0.1、加载频率为20 Hz条件下的腐蚀疲劳寿命S-N曲线,得到焊接接头在该环境下的疲劳极限,建立了有温度参数表示的S-N数学模型.结果表明,在模拟海水中焊接接头发生腐蚀疲劳断裂的位置在母材区,环境温度升高对低应力水平作用下的试件疲劳寿命有明显影响.
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| 关 键 词： | 双相不锈钢 腐蚀疲劳 S-N曲线 |
| 收稿时间： | 2012/10/10 0:00:00 |
Corrosion fatigue performance of 2205 DSS welded joints |
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| WANG Zhixiang,ZHANG Yao and ZHANG Jixiang.Corrosion fatigue performance of 2205 DSS welded joints[J].Transactions of The China Welding Institution,2014,35(5):67-70. |
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| Authors: | WANG Zhixiang ZHANG Yao and ZHANG Jixiang |
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| Affiliation: | 1.Marine Engineering Center, Chongqing Jiaotong University, Chongqing 400074, China2.Electromechanical and Automotive Engineering School, Chongqing Jiaotong University, Chongqing 400074, China |
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| Abstract: | The corrosion fatigue performance of welded joints of homemade 2205 duplex stainless steel (DSS) has been studied in simulated seawater environment. The S-N curves of corrosion fatigue life were obtained at different environment temperatures of 24,30 and 40℃,as the stress ratio is 0.1 and the loading frequency is 20 Hz. The experimental data shows that the low stress level had a significant effect on the fatigue life as environment temperature rising. Then an S-N mathematical model with temperature was established and welded joint fatigue limit was obtained in simulated seawater environment. |
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| Keywords: | 2205 duplex stainless steel corrosion fatigue S-N curve |
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