TY - JOUR A1 - Schempp, Philipp A1 - Häcker, Ralf A1 - Pittner, Andreas A1 - Cross, C.E. A1 - Rethmeier, Michael T1 - Influence of grain size on mechanical properties of aluminium GTA weld metal N2 - Surface modification of mild steel was undertaken using two covered electrodes and two tubular electrodes. The two covered electrodes are DIN 8555: E6-UM-60 and E10-UM-60GR; however, the two tubular electrodes are E10-GF-60GR1 and E10-GF-60GR2. Chemical analysis for the weld metal and XRD of the flux covering for covered electrodes and flux core for tubular electrodes were conducted. The most important factor in determining the wear resistance is the microstructure of the deposit layers. In similar carbon equivalent electrodes E10-UM-60GR and E10-GF-60GR1, electrode E10-GF-60GR1 (tubular) shows larger carbides area fraction and better wear resistance than electrode E10-UM-60GR (covered). This could be attributed to a lower dilution associated with tubular electrode compared with covered electrode. The two tubular electrodes showed higher wear resistance than the covered electrodes which is mainly due to the larger Fe-Cr carbide precipitation area fraction. KW - GTA welding KW - Aluminium KW - Grain refinement KW - Tensile tests KW - Tear tests PY - 2014 U6 - https://doi.org/10.1007/s40194-014-0132-0 SN - 0354-7965 VL - 58 IS - 4 SP - 491 EP - 497 PB - Drustvo za Unapredjivanje Zavarivanja u Srbiji CY - Beograd AN - OPUS4-35103 LA - srp AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -