Life cycle assessment of metal alloys for structural applications

E-MRS Fall Symposium I: Solutions for Critical Raw Materials Under Extreme Conditions

Rebec, K Malovrh^1 ; Markoli, B.^2 ; Leskovar, B.^2

Slovenian National Building, Civil Engineering Institute, Department of Building Physics, Ljubljana, Slovenia^1

University of Ljubljana, Faculty of Natural Sciences and Engineering, Department of Materials and Metallurgy, Ljubljana, Slovenia^2

关键词: Aluminium ingots;    Environmental footprints;    Global warming potential;    Life Cycle Assessment (LCA);    Metastable quasicrystals;    Photochemical ozone creation potentials;    Resources depletion;    Structural applications;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/329/1/012003/pdf
DOI  :  10.1088/1757-899X/329/1/012003

来源: IOP

【 摘 要 】

The study compared environmental footprints of two types of Al-alloys: well-known 5083 aluminium alloy with magnesium and traces of manganese and chromium in its composition. This material is highly resistant to seawater corrosion and the influence of industrial chemicals. Furthermore, it retains exceptional strength after welding. The comparisons were made to an innovative alloy where the aluminium based matrix is reinforced by metastable quasicrystals (QC), thus avoiding magnesium in its composition. Furthermore, we checked other aluminium ingots' footprints and compared European average and Germany country specific production data. Environmental footprints were assessed via cradle to gate life cycle assessment. Our findings normalized to 1 m2plate suggest, that newly proposed alloy could save around 50 % in value of parameters abiotic resources depletion of fossil fuels, acidification, eutrophication, global warming potential and photochemical ozone creation potential if we compare Qc5 to 6 mm 5083 alloy plate. Only abiotic resources depletion of elements and ozone depletion parameters increase for Qc5 compared to 6 mm 5083 alloy plate.