Mg effect on the cryogenic temperature toughness of Al-Mg alloys
In this study, the Mg and temperature effects on cryogenic impact toughness of Al-Mg alloys are investigated. Cryogenic Charpy impact tests are conducted for several Al-Mg alloys: AA5083 (=reference), Al-6 Mg, Al-8 Mg, and Al-8.5 Mg. The temperature range is – 196 ˚C to 100 ˚C. In all Al-Mg alloys,...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-12-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127522009583 |
| _version_ | 1828265594830454784 |
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| author | Kwangtae Son Michael E. Kassner Tae-Kyu Lee Ji-Woon Lee |
| author_facet | Kwangtae Son Michael E. Kassner Tae-Kyu Lee Ji-Woon Lee |
| author_sort | Kwangtae Son |
| collection | DOAJ |
| description | In this study, the Mg and temperature effects on cryogenic impact toughness of Al-Mg alloys are investigated. Cryogenic Charpy impact tests are conducted for several Al-Mg alloys: AA5083 (=reference), Al-6 Mg, Al-8 Mg, and Al-8.5 Mg. The temperature range is – 196 ˚C to 100 ˚C. In all Al-Mg alloys, the impact toughness is improved at higher temperatures. The Al-6 Mg alloy exhibits the largest impact toughness, whereas the lowest impact toughness is observed in AA5083 over the temperature range. Beyond the Mg content of 6 wt%, the impact toughness of Al-Mg alloys decreases with increasing Mg. The planar anisotropy (Δr) is low in Al-Mg alloys of higher impact toughness. The largest amounts of coarse inclusions (>10 µm) are present in the AA5083, providing favorable cracking sites and thereby its poor impact toughness. The grain size and intergranular Mg segregation do not appear to influence the toughness of Al-Mg alloys. Weaker texture in the most ductile Al-6 Mg appears beneficial to gain more homogeneous deformation and lower Δr. Brass {110} 〈112〉, S {123} 〈634〉, and Copper {112} 〈111〉 textures evolve at the expense of a Goss {110} 〈001〉 weakening by increasing the Mg level. This texture evolution illustrates the toughness degradation of Al-Mg alloys of higher Mg levels. |
| first_indexed | 2024-04-13T04:41:34Z |
| format | Article |
| id | doaj.art-73feb5e5efce435197df483d0d84d724 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-04-13T04:41:34Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-73feb5e5efce435197df483d0d84d7242022-12-22T03:01:59ZengElsevierMaterials & Design0264-12752022-12-01224111336Mg effect on the cryogenic temperature toughness of Al-Mg alloysKwangtae Son0Michael E. Kassner1Tae-Kyu Lee2Ji-Woon Lee3School of Mechanical, Industrial, and Manufacturing Engineering, Oregon State University, Corvallis, OR 97331, USAMork Family Department of Chemical Engineering & Materials Science, University of Southern California, CA 90089, USAComponent Quality and Technology Group, Cisco Systems, Inc., San Jose, CA 95134, USADivision of Advanced Materials Engineering, Kongju National University, Cheonan 31080, South Korea; Center for Advanced Materials and Parts of Powders, Kongju National University, Cheonan 31080, South Korea; Corresponding author at: Division of Advanced Materials Engineering, Kongju National University, Cheonan 31080, South Korea.In this study, the Mg and temperature effects on cryogenic impact toughness of Al-Mg alloys are investigated. Cryogenic Charpy impact tests are conducted for several Al-Mg alloys: AA5083 (=reference), Al-6 Mg, Al-8 Mg, and Al-8.5 Mg. The temperature range is – 196 ˚C to 100 ˚C. In all Al-Mg alloys, the impact toughness is improved at higher temperatures. The Al-6 Mg alloy exhibits the largest impact toughness, whereas the lowest impact toughness is observed in AA5083 over the temperature range. Beyond the Mg content of 6 wt%, the impact toughness of Al-Mg alloys decreases with increasing Mg. The planar anisotropy (Δr) is low in Al-Mg alloys of higher impact toughness. The largest amounts of coarse inclusions (>10 µm) are present in the AA5083, providing favorable cracking sites and thereby its poor impact toughness. The grain size and intergranular Mg segregation do not appear to influence the toughness of Al-Mg alloys. Weaker texture in the most ductile Al-6 Mg appears beneficial to gain more homogeneous deformation and lower Δr. Brass {110} 〈112〉, S {123} 〈634〉, and Copper {112} 〈111〉 textures evolve at the expense of a Goss {110} 〈001〉 weakening by increasing the Mg level. This texture evolution illustrates the toughness degradation of Al-Mg alloys of higher Mg levels.http://www.sciencedirect.com/science/article/pii/S0264127522009583Al-Mg alloysCryogenic propertiesImpact toughnessMicrostructureTexture |
| spellingShingle | Kwangtae Son Michael E. Kassner Tae-Kyu Lee Ji-Woon Lee Mg effect on the cryogenic temperature toughness of Al-Mg alloys Materials & Design Al-Mg alloys Cryogenic properties Impact toughness Microstructure Texture |
| title | Mg effect on the cryogenic temperature toughness of Al-Mg alloys |
| title_full | Mg effect on the cryogenic temperature toughness of Al-Mg alloys |
| title_fullStr | Mg effect on the cryogenic temperature toughness of Al-Mg alloys |
| title_full_unstemmed | Mg effect on the cryogenic temperature toughness of Al-Mg alloys |
| title_short | Mg effect on the cryogenic temperature toughness of Al-Mg alloys |
| title_sort | mg effect on the cryogenic temperature toughness of al mg alloys |
| topic | Al-Mg alloys Cryogenic properties Impact toughness Microstructure Texture |
| url | http://www.sciencedirect.com/science/article/pii/S0264127522009583 |
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