| TA5钛合金的疲劳裂纹扩展门槛值与疲劳裂纹扩展速率的关系 |
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| 引用本文： | 王孔探,秦广义.TA5钛合金的疲劳裂纹扩展门槛值与疲劳裂纹扩展速率的关系[J].材料开发与应用,1995,10(3):8-12,19. |
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| 作者姓名： | 王孔探 秦广义 |
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| 作者单位： | 洛阳船舶材料研究所，哈尔滨船舶锅炉轮机研究所 |
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| 摘 要： | 研究了大规格ＴＡ５钛合金热轧环村的疲劳裂纹扩展门槛值ΔＫ＿（ｔｈ）与疲劳裂纹扩展速率加ｄａ／ｄＮ之间的关系。结果表明，Δｋ＿（ｔｈ）值可由近门槛区的ｄａ／ｄＮ表达式直接按定义ｄａ／ｄＮ值算，而无需进行繁琐的试验测定。这一结果同样适用于β区加热热轧ＴＡ５钛合金板材。
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| 关 键 词： | 钛合金，疲劳裂纹，门槛值，扩展速率 |
Relationship between threshold value and rate of fatigue erackpropagation in TA5 titanium alloy |
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| Wang Kongtan,Zhang Wenyu.Relationship between threshold value and rate of fatigue erackpropagation in TA5 titanium alloy[J].Development and Application of Materials,1995,10(3):8-12,19. |
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| Authors: | Wang Kongtan Zhang Wenyu |
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| Affiliation: | Wang Kongtan;Zhang Wenyu(Luoyang Ship Material Research Institute)Qin Guangyi(Harbin Marine Boiler and Turbine Research Institute) |
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| Abstract: | A research on the relationship between the shreshold value and rate of fatigue crack propagation in large sized hot rolled rings of TA5 titanium alloy is performed. The results indicate that the ΔK_(th)value can be calculated from an expression for da/dN in a zone near the threshold directly in terms of the defined value of da/dN without overlaborate measurements made. The conclusion is also suitable for hot rolled TA5 titani- um alloy plates which are heated in βZone during hot-rolling processing. |
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| Keywords: | Ti alloy Fatigue erack Threshold value Propagation rate |
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