compatibility for recycling of alloys

Open access to simulated and experimental data generated by the ReINTEGRA project (GA 886609, H2020, European Union, through Clean Sky 2 JU) along the research, at single-stringer coupon level, of the End-of-Life of novel welded Al-Li aerostructures.Research pertaining to Task 3.1 (WP3), Deliverable D3.2 

Al-Li alloys Compatibility-Recyclability predictions generated by the first version of the Excel tool (ReINTEGRA scrap recyclability tool v01.xlsx) developed by AZTERLAN for 18 scrap fractions of coupons; and predictions made by the second version of the software (ReINTEGRA scrap recyclability tool v02.xlsx) for 12 scrap fractions generated during full validation of the recommended EoL route for each coupon reference. Outputs of the excel tool printed as pdf files.

Experimental data of the scrap chemical composition originated from chemical analysis by ICP-OES conducted by AZTERLAN on test samples of remelted scrap fractions and on test samples of pre-scrap material fractions. Scrap fractions of coupons supplied by SONACA by cutting (radial saw) coupons following one of four possible cutting strategies (0C, 1C, 2C, 3C).

Each pdf file contains the description of the scrap being evaluated, the measured elemental composition of the scrap (%wt) and the results of the following evaluations: (1) scrap composition vs composition ranges of four registered Al-Li alloys (2060, 2196, 2099, 2198); (2) quantification of excess/deficit of elements in scrap vs composition of the four registered alloys; (3) chemical compatibility with each alloy; (4) critical chemical element for compatibility; (5) recyclability as max % scrap acceptable as raw material to manufacture each alloy; (6) alloying addition needs for recycling.

The ReINTEGRA scrap recyclability tool has been developed as part of WP3 activities (Task 3.1).

The first version of the tool only evaluates compatibility/recyclability of scrap with the four Al-Li alloys used in ecoTECH coupons. The user must enter the chemical composition data of the scrap to be evaluated. The second version of the tool implements corrections to the algorithm to identify the critical element in excess for setting max. % of scrap in the charge.

The coupon scrap samples have been used for investigating cutting strategies (WP2), remelting set-up (WP3) and full validation of recommended EoL routes (WP3). Pre-scrap materials have been used in pre-scrap characterisation protocols (WP4).