Experimental Dataset for Friction Stir Processing, Electrochemical Corrosion, and Stress Corrosion Cracking of ZE41 and AZ91D Magnesium Alloys

Description

This dataset encompasses experimental data related to friction stir processing (FSP), electrochemical corrosion and sustained-load stress corrosion cracking of ZE41 and AZ91D magnesium alloys. Sensor Core Dataset The core data set consists of 14 records of SCC time-series measurements with corresponding system time, elapsed time and load evolution (indicated load for exposure at nominal loading levels (20-100% of yield strength) in a 3.5 wt % NaCl solution. The measured SCC records are: AZ91D base metal, AZ91D friction stir processed conditions at 20, 40, 60 and 80% YS (in that order of decreasing active SCC rate) together with ZE41 friction stir processed conditions at 20, 40, 60 and 80% YS. The repo also includes collection of standardised csv files, data dictionary, record inventory, quality-control notes, raw-versus-reported cross-checks for five-level friction stir processing parameter tables (e.g. Central Composite Design matrices bluever 20 runs ZE41 and AZ91D per sign level; Tables S3-S4), and potentiodynamic polarization summary data from the base metal directly adjacent to TMAZ and stir-zone condition (Table S5). 100% YS from synthetic reconstructions of ZE41-BM and ZE41-FSP are not shown in the main experimental dataset.

Steps to reproduce

ZE41 and AZ91D magnesium alloys were investigated in base-metal and friction-stir-processed conditions. Friction stir processing parameters were designed using a Central Composite Design with tool rotational speed, tool traverse speed and axial load as input variables. Potentiodynamic polarization testing was carried out in 3.5 wt.% NaCl using a three-electrode system with the specimen as the working electrode, Ag/AgCl as the reference electrode and graphite as the counter electrode. Sustained-load stress corrosion cracking tests were performed in 3.5 wt.% NaCl at nominal loading levels from 20% to 100% of yield strength. The acquisition workbooks contain system time, elapsed time, indicated load and LVDT displacement. Standardized CSV files retain the measured load and displacement values without smoothing, interpolation or replacement. Derived fields are limited to elapsed hours, formatted clock time, normalized indicated load and LVDT change from the first reading. Users should review the supplied quality-control notes before deriving failure or transition events.

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Funders

• Aarupadai Veedu Institute of Technology

  Grant ID: UID / Grant number: VMRF/Seed Money/AY 2023-24/AVIT/9

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