4.6 Article

Effect of saline environment on the fatigue crack growth resistance of WE43 Mg alloy

期刊

MATERIALS TODAY COMMUNICATIONS
卷 31, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.mtcomm.2022.103788

关键词

Magnesium alloy; Chloride solution; Hydrogen embrittlement; Anodic dissolution; Fatigue crack growth

资金

  1. Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior -Brasil (CAPES) [001]
  2. FAPESP [2019/23 775-4]
  3. CNPq

向作者/读者索取更多资源

This study focuses on the fatigue crack propagation of the WE43 magnesium alloy, and finds that the crack rates are higher in the sodium chloride environment compared to laboratory air, possibly due to hydrogen embrittlement and anodic dissolution.
New magnesium alloys have been developed to reduce the weight of engineering components without compromising the mechanical properties and corrosion resistance; however, there is a lack in the literature regarding such properties. Hence, this work focuses on studying the fatigue crack propagation of the WE43 magnesium alloy, considering the effects of air and sodium chloride environments. Fatigue results showed similar behavior for both, main and transverse, directions regarding the rolling mill process. Yet, fatigue crack rates (FCR) were higher in the sodium chloride environment than in laboratory air, which could be attributed to hydrogen embrittlement and anodic dissolution at the crack tip. Laboratory air FCR results presented a lower m value (3.63 and 1.72) than the one found for the sodium chloride environment (9.15 and 4.83), indicating a lower FCR rate variation with delta K. Comparing FCR for saline and air conditions, at the end of Paris' region II, FCR in the saline environment was enhanced by almost two orders of magnitude (delta K= 11 MPa.m(1/2)). Furthermore, fractography showed mixed intergranular and transgranular cracking in the saline environment.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据