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△Tmax-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.
参考文献
| [1] | 陈振华.变形镁合金[M].北京:化学工业出版社,2005:1-3. |
| [2] | 熊缨,程利霞.挤压AZ31B镁合金多轴疲劳寿命预测[J].金属学报,2012(12):1446-1452. |
| [3] | 郭杏林,王晓钢.疲劳热像法研究综述[J].力学进展,2009(02):217-227. |
| [4] | G. La Rosa;A. Risitano .Thermographic methodology for rapid determination of the fatigue limit of materials and mechanical components[J].International Journal of Fatigue,2000(1):65-73. |
| [5] | LUONG M P .Infrared thermographic scanning of fatigue in metals[J].Nuclear Engineering Design,1995,158(223):363-368. |
| [6] | 刘浩,赵军,丁桦.疲劳过程中生热机理的实验探讨[J].实验力学,2008(01):1-8. |
| [7] | 闫志峰,张红霞,王文先,王凯,裴飞飞.基于红外热像法的AZ31B镁合金温度演化与疲劳寿命预测[J].中国有色金属学报（英文版）,2013(07):1942-1948. |
| [8] | L. JIANG;H. WANG;P. K. LIAW .Temperature Evolution and Life Prediction in Fatigue of Superalloys[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2004(3):839-848. |
| [9] | 李娜 .基于能量耗散理论的疲劳试验研究[D].西北工业大学,2006. |
| [10] | 王晓钢 .基于热像法的寿命预测与疲劳分析[D].大连理工大学,2009. |
| [11] | Risitano, A.;Risitano, G. .Cumulative damage evaluation of steel using infrared thermography[J].Theoretical and Applied Fracture Mechanics,2010(2):82-90. |
| [12] | Fan, J.L.;Guo, X.L.;Wu, C.W.;Zhao, Y.G. .Research on fatigue behavior evaluation and fatigue fracture mechanisms of cruciform welded joints[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2011(29/30):8417-8427. |
| [13] | 闫志峰,张红霞,王文先,王凯,裴飞飞.红外热像法预测镁合金的疲劳性能[J].机械工程材料,2012(02):72-75. |
| [14] | N. Ranc;D. Wagner;P.C. Paris .Study of thermal effects associated with crack propagation during very high cycle fatigue tests[J].Acta materialia,2008(15):4012-4021. |
| [15] | Thomas Ummenhofer;Justus Medgenberg .On the use of infrared thermography for the analysis of fatigue damage processes in welded joints[J].International Journal of Fatigue,2009(1):130-137. |
| [16] | F. Cura;G. Curti;R. Sesana .A new iteration method for the thermographic determination of fatigue limit in steels[J].International Journal of Fatigue,2005(4):453-459. |
| [17] | B. YANG;P.K. LIAW;M. MORRISON .Temperature evolution during fatigue damage[J].Intermetallics,2005(3/4):419-428. |
| [18] | Pastor ML;Balandraud X;Grediac M;Robert JL .Applying infrared thermography to study the heating of 2024-T3 aluminium specimens under fatigue loading[J].Infrared physics and technology,2008(6):505-515. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%