| 双相不锈钢焊接接头疲劳强度 |
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| 引用本文： | 贾法勇,霍立兴,吴冰,张玉凤.双相不锈钢焊接接头疲劳强度[J].焊接学报,2004,25(2):31-34. |
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| 作者姓名： | 贾法勇 霍立兴 吴冰 张玉凤 |
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| 作者单位： | 天津大学,材料科学与工程学院,天津,300072 |
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| 基金项目： | 国家博士点基金资助项目(1999005605) |
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| 摘 要： | 试验对SAF2205双相不锈钢纵向角接板焊接接头的疲劳强度进行了研究，用有限元计算热点应力集中系数，分别得出了名义应力和热点应力疲劳S-N曲线；用国际焊接学会推荐的方法进行统计处理，并和相同接头形式结构钢的疲劳强度进行了比较。试验表明，双相不锈钢纵向角接板焊接接头名义应力疲劳强度试验结果为FAT136，热点应力疲劳强度试验结果为FAT163，高于相同接头形式结构钢的疲劳级别；双相不锈钢的静载强度级别对其疲劳强度设计级别没有明显的影响。
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| 关 键 词： | 双相不锈钢 名义应力 热点应力 有限元 焊接接头 疲劳强度 |
| 文章编号： | 0253-360X(2004)02-31-04 |
| 收稿时间： | 2003/6/23 0:00:00 |
Fatigue strength of duplex stainless steel welded joint |
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| JIA Fa-yong,HUO Li-xing,Wu-bing and ZHANG Yu-feng.Fatigue strength of duplex stainless steel welded joint[J].Transactions of The China Welding Institution,2004,25(2):31-34. |
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| Authors: | JIA Fa-yong HUO Li-xing Wu-bing and ZHANG Yu-feng |
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| Affiliation: | J1AFa-yong,HUO Li-xing,Wu-bing,ZHANG Yu-feng {School of Materials Science and Engineering,Tianjin University,Tianjin 30072,China). p31~34 |
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| Abstract: | In the test, fatigue strength of SAF2205 duplexstainless steel welded joints with longitudinal gusset has been studied, hot spot stress concentration factor was computed by the FEM and the fatigue S /V curves of nomi nal stress and hot spot stress were figured out. Moreover, the test data were statistical treated with the method recommended by IIW and compared with fatigue strength of structural steel with identical joint type. Results show that the test results of duplex stainless steel welded joint with longitudinal gusset obtained by nominal stainless steel welded joint with longitudinal gusset obtained by nominal stress and hot spot stress are FA T |
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| Keywords: | duplex stainless steel nominal stress hot spot stress finite element method |
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