Chemical engineering LB-PBF PBF-LB/M Technology: general issues additive manufacturing additively manufactured parts aluminium alloys aluminum alloys crack density differential fast scanning calorimetry dispersion eddy-current method electrical conductivity finite element simulation grain size green laser hot cracking intermetallics laser powder bed fusion magnesium mechanical properties microstructure nanocomposite nanocomposites nanoparticle interaction nanoparticles oxide dispersion strengthened steel phase-field model polyamide 12 powder bed fusion