| 焊后热处理退火工艺对十字接头疲劳寿命的影响 |
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| 引用本文： | 李季涛,兆文忠,田长亮.焊后热处理退火工艺对十字接头疲劳寿命的影响[J].金属热处理,2020,45(9):86-90. |
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| 作者姓名： | 李季涛 兆文忠 田长亮 |
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| 作者单位： | 1.大连交通大学 机车车辆工程学院,辽宁 大连 116028; 2.中车齐齐哈尔交通装备有限公司 技术中心,黑龙江 齐齐哈尔 161002 |
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| 摘 要： | 通过对焊接结构疲劳评估标准分析,归纳了疲劳评估标准对焊接残余应力的考虑,阐明了从计算疲劳寿命角度看,残余应力不需要再另外考虑。设计并制作了一批十字接头试件,采用BS 7608:2014+A1:2015标准对疲劳试验数据进行了分析,结果表明,焊后退火前和不同工艺退火后的十字接头试件疲劳寿命没有显著差异。
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| 关 键 词： | 焊接残余应力 焊后热处理 退火工艺 疲劳寿命 十字接头 |
| 收稿时间： | 2020-03-20 |
Influence of post-weld annealing process on fatigue life of cross joint |
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| Li Jitao,Zhao Wenzhong,Tian Changliang.Influence of post-weld annealing process on fatigue life of cross joint[J].Heat Treatment of Metals,2020,45(9):86-90. |
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| Authors: | Li Jitao Zhao Wenzhong Tian Changliang |
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| Affiliation: | 1. College of Locomotive and Rolling Stock Engineering,Dalian Jiaotong University,Dalian Liaoning 116028,China; 2. Technology Center,CRRC Qiqihar Rolling Stock Co.,Ltd.,Qiqihar Heilongjiang 161002,China |
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| Abstract: | Consideration of welding residual stress in fatigue assessment criteria was summarized based on the analysis of fatigue assessment standards for welding structure,then it was clarified from the perspective of fatigue life calculation that the influence of residual stress requires no additional consideration.A batch of cross joint specimens were designed and anufactured,on which the fatigue test was carried out,and the fatigue test data were analyzed according to BS 7608:2014+Al:2015 standard.The result shows that there is no significant difference in fatigue life of as-welded cross joint specimens and that after different post-weld annealing process. |
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| Keywords: | welding residual stress post-weld heat treatment annealing process fatigue life croSs joint |
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