Effects of Mn, Zn Additions and Cooling Rate on Mechanical and Corrosion Properties of Al-4.6Mg Casting Alloys
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 e...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-04-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/13/8/1983 |
| _version_ | 1797569814237020160 |
|---|---|
| author | Chih-Ting Wu Sheng-Long Lee Ye-Feng Chen Hui-Yun Bor Kung-Hui Liu |
| author_facet | Chih-Ting Wu Sheng-Long Lee Ye-Feng Chen Hui-Yun Bor Kung-Hui Liu |
| author_sort | Chih-Ting Wu |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-10T20:15:56Z |
| format | Article |
| id | doaj.art-e68a1d101c0443819b47100afd87da53 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T20:15:56Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-e68a1d101c0443819b47100afd87da532023-11-19T22:34:14ZengMDPI AGMaterials1996-19442020-04-01138198310.3390/ma13081983Effects of Mn, Zn Additions and Cooling Rate on Mechanical and Corrosion Properties of Al-4.6Mg Casting AlloysChih-Ting Wu0Sheng-Long Lee1Ye-Feng Chen2Hui-Yun Bor3Kung-Hui Liu4Department of Vehicle Engineering, Army Academy R.O.C., Jhongli 32092, TaiwanInstitute of Material Science and Engineering, National Central University, Jhongli 32001, TaiwanInstitute of Material Science and Engineering, National Central University, Jhongli 32001, TaiwanMaterials and Electro-Optics Research Division, Chung-Shan Institute of Science and Technology, Longtang 32557, TaiwanInstitute of Material Science and Engineering, National Central University, Jhongli 32001, TaiwanThe 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.https://www.mdpi.com/1996-1944/13/8/1983Al-4.6Mg alloyMn additionZn additioncooling ratecorrosion properties |
| spellingShingle | Chih-Ting Wu Sheng-Long Lee Ye-Feng Chen Hui-Yun Bor Kung-Hui Liu Effects of Mn, Zn Additions and Cooling Rate on Mechanical and Corrosion Properties of Al-4.6Mg Casting Alloys Materials Al-4.6Mg alloy Mn addition Zn addition cooling rate corrosion properties |
| title | Effects of Mn, Zn Additions and Cooling Rate on Mechanical and Corrosion Properties of Al-4.6Mg Casting Alloys |
| title_full | Effects of Mn, Zn Additions and Cooling Rate on Mechanical and Corrosion Properties of Al-4.6Mg Casting Alloys |
| title_fullStr | Effects of Mn, Zn Additions and Cooling Rate on Mechanical and Corrosion Properties of Al-4.6Mg Casting Alloys |
| title_full_unstemmed | Effects of Mn, Zn Additions and Cooling Rate on Mechanical and Corrosion Properties of Al-4.6Mg Casting Alloys |
| title_short | Effects of Mn, Zn Additions and Cooling Rate on Mechanical and Corrosion Properties of Al-4.6Mg Casting Alloys |
| title_sort | effects of mn zn additions and cooling rate on mechanical and corrosion properties of al 4 6mg casting alloys |
| topic | Al-4.6Mg alloy Mn addition Zn addition cooling rate corrosion properties |
| url | https://www.mdpi.com/1996-1944/13/8/1983 |
| work_keys_str_mv | AT chihtingwu effectsofmnznadditionsandcoolingrateonmechanicalandcorrosionpropertiesofal46mgcastingalloys AT shenglonglee effectsofmnznadditionsandcoolingrateonmechanicalandcorrosionpropertiesofal46mgcastingalloys AT yefengchen effectsofmnznadditionsandcoolingrateonmechanicalandcorrosionpropertiesofal46mgcastingalloys AT huiyunbor effectsofmnznadditionsandcoolingrateonmechanicalandcorrosionpropertiesofal46mgcastingalloys AT kunghuiliu effectsofmnznadditionsandcoolingrateonmechanicalandcorrosionpropertiesofal46mgcastingalloys |