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材料工程  2014, Vol. 0 Issue (1): 85-89    DOI: 10.3969/j.issn.1001-4381.2014.01.016
  测试与表征 本期目录 | 过刊浏览 | 高级检索 |
循环载荷作用下镁合金温度演化及高周疲劳性能预测
王凯, 闫志峰, 王文先, 张红霞, 裴飞飞
太原理工大学 材料科学与工程学院, 太原 030024
Temperature Evolution and Fatigue Properties Prediction for High Cycle Fatigue of Magnesium Alloy Under Alternate Loading
WANG Kai, YAN Zhi-feng, WANG Wen-xian, ZHANG Hong-xia, PEI Fei-fei
College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
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摘要 基于红外热像法对AZ31B镁合金板材室温下的高周疲劳性能进行了研究。使用红外热成像仪测量整个疲劳过程中试件表面温度变化。结果表明:镁合金疲劳加载过程中的温度变化分为初始温度增加、温度降低、温度恒定、温度快速上升、温度最后下降5个部分。采用基于热传导、热弹性和非弹性效应的理论模型解释了疲劳加载过程中的温度变化。红外热像法预测的AZ31B镁合金疲劳极限113MPa与实验结果108MPa相对误差约为4.8%。基于镁合金表面温度的变化,提出了ΔTmax-N曲线预测疲劳寿命的方法,即通过测量阶段Ⅰ温升最大值预测镁合金的疲劳断裂,并计算其疲劳寿命。
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王凯
闫志峰
王文先
张红霞
裴飞飞
关键词 AZ31B镁合金红外热像法温度演化疲劳性能    
Abstract:High-cycle fatigue damage process of AZ31B magnesium alloy at room temperature was studied based on thermographic technology. An infrared-thermography camera was used to investigate the temperature evolution on the surface of material during fatigue experiments. Results show that the temperature evolution mainly undergoes five stages under fatigue loading: an initial increase, steep reduces, steady-state, an abrupt increase and final drop (stage Ⅴ). Theoretical model combining the thermoelastic, inelastic, and heat-transfer effects will be formulated to explain the temperature profiles observed during fatigue. The relative error of fatigue limits between the experimental result (108MPa) and the predicted result (113MPa) is 4.8%. ΔTmax-N curve was proposed to predict the fatigue life based on the temperature evolution during the fatigue experiments. The fatigue fracture and the fatigue life will be predicted by maximum temperature rise of first stage.
Key wordsAZ31B magnesium alloy    thermographic technology    temperature evolution    fatigue property
收稿日期: 2012-08-07     
1:  TG113.25  
  TG146.2+2  
基金资助:国家自然科学基金资助项目(51175364);山西省自然科学基金资助项目(2013011014-3)
通讯作者: 王文先(1963- ),男,教授,博导,主要从事材料连接及界面行为研究,联系地址:山西省太原市迎泽西大街79号太原理工大学材料科学与工程学院材料加工系502室(030024)     E-mail: wwx960@126.com
作者简介: 王凯(1989- ),女,硕士研究生,主要从事金属材料失效及安全评定,材料连接及界面行为研究,联系地址:山西省太原市迎泽西大街79号太原理工大学材料科学与工程学院(030024),E-mail:wangkai19890908@hotmail.com
引用本文:   
王凯, 闫志峰, 王文先, 张红霞, 裴飞飞. 循环载荷作用下镁合金温度演化及高周疲劳性能预测[J]. 材料工程, 2014, 0(1): 85-89.
WANG Kai, YAN Zhi-feng, WANG Wen-xian, ZHANG Hong-xia, PEI Fei-fei. Temperature Evolution and Fatigue Properties Prediction for High Cycle Fatigue of Magnesium Alloy Under Alternate Loading. Journal of Materials Engineering, 2014, 0(1): 85-89.
链接本文:  
http://jme.biam.ac.cn/jme/CN/10.3969/j.issn.1001-4381.2014.01.016      或      http://jme.biam.ac.cn/jme/CN/Y2014/V0/I1/85
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