Influence of phase dissolution and hydrogen absorption on the stress corrosion cracking behavior of Mg-7%Gd-5%Y-1%Nd-0.5%Zr alloy in 3.5 wt.% NaCl solution
| Autor: | B.J. Wang, L.Y. Sheng, D.K. Xu, Yanxin Qiao, Chuang Dong, Shidong Wang, En-Hou Han |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Hydrogen 020209 energy General Chemical Engineering Metallurgy chemistry.chemical_element 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology Corrosion Matrix (chemical analysis) chemistry Phase (matter) 0202 electrical engineering electronic engineering information engineering General Materials Science Stress corrosion cracking 0210 nano-technology Dissolution Hydrogen embrittlement Eutectic system |
| Zdroj: | Corrosion Science. 142:185-200 |
| ISSN: | 0010-938X |
| DOI: | 10.1016/j.corsci.2018.07.019 |
| Popis: | Through investigating the influence of phase dissolution and hydrogen on the stress corrosion cracking (SCC) behavior of an as-cast Mg-7%Gd-5%Y-1%Nd-0.5%Zr alloy in 3.5 wt.% NaCl solution, it revealed that the proposed T4 treatment can improve the SCC resistance. Based on the microstructural analysis, such improvement was mainly ascribed to the complete dissolution of coarse eutectic pockets. Further analysis indicated that the SCC mechanism was associated with hydrogen embrittlement (HE). Through dissolving the eutectic pockets and alleviating the corrosion attack of Mg matrix, the influence of HE on SCC resistance of T4 samples can be weakened. |
| Databáze: | OpenAIRE |
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