Corrosion fatigue assessment of creep-resistant magnesium alloys DieMag422 and AE42
Corrosion fatigue assessment of creep-resistant magnesium alloys DieMag422 and AE42
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DOI：
10.1016/j.engfracmech.2017.02.024
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发表时间：
2017-11
影响因子：
5.4
通讯作者：
M. Klein;G. Frieling;F. Walther
中科院分区：
文献类型：
--
作者：
M. Klein;G. Frieling;F. Walther
通过面向寿命和工艺的方法来表征抗蠕变镁合金 DieMag422 和 AE42 的腐蚀疲劳行为。在几个调整的腐蚀速率下，通过恒幅测试评估了两种材料的疲劳性能。通过恒幅测试期间的腐蚀电位响应分析来识别和监测劣化和开裂机制。腐蚀疲劳强度的降低可以与调整后的腐蚀速率定量相关。腐蚀电位响应分析揭示了 LCF 和 HCF 状态的特征恶化和开裂机制。
Corrosion fatigue behaviors of creep-resistant magnesium alloys DieMag422 and AE42 were characterized by means of lifetime- and process-oriented approaches. Fatigue properties of both materials were assessed in constant amplitude tests at several adjusted corrosion rates. Deterioration and cracking mechanisms were identified and monitored by means of corrosion potential response analysis during constant amplitude tests. Reduction of corrosion fatigue strength could be quantitatively correlated with adjusted corrosion rates. Analysis of corrosion potential response revealed characteristic deterioration and cracking mechanisms for LCF and HCF regime.