Effects of Mn, Zn Additions and Cooling Rate on Mechanical and Corrosion Properties of Al-4.6Mg Casting Alloys
| Autor: | Sheng Long Lee, Kung Hui Liu, Bor Hui-Yun, Ye Feng Chen, Chih Ting Wu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Zn addition Alloy 02 engineering and technology engineering.material 01 natural sciences lcsh:Technology Article Corrosion Al-4.6Mg alloy Mn addition 0103 physical sciences Ultimate tensile strength Water cooling General Materials Science cooling rate corrosion properties lcsh:Microscopy lcsh:QC120-168.85 010302 applied physics Quenching lcsh:QH201-278.5 lcsh:T Metallurgy Intergranular corrosion 021001 nanoscience & nanotechnology Casting lcsh:TA1-2040 engineering Grain boundary lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 |
| Zdroj: | Materials Volume 13 Issue 8 Materials, Vol 13, Iss 1983, p 1983 (2020) |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma13081983 |
| Popis: | The mechanical properties of the Al-Mg alloy can be enhanced by adding metallic elements, but a continuous distribution of precipitates at grain boundaries leads to intergranular corrosion during sensitization treatment. In the present work, Mn, Zn additions, water cooling and furnace cooling were executed to investigate their effects on the mechanical and corrosion properties of the Al-4.6Mg alloy. Our results show that adding Mn to Al-4.6Mg alloys may produce grain refinement and dispersion strengthening, increasing tensile strength and hardness. The presence of Mn did not affect the corrosion resistance of Al-Mg alloys. Adding Zn to the Al-4.6Mg alloy increased tensile strength and hardness, but decreased corrosion resistance. Combined, the addition of Mn and Zn to the Al-4.6Mg alloy exhibited the highest tensile strength and hardness, but seriously reduced corrosion resistance. Furnace cooling substituted for water quenching could avoid intergranular corrosion, but slightly decreased the tensile strength and hardness by 7.0% and 6.8%, respectively. |
| Databáze: | OpenAIRE |
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