Correlation between tensile properties, microstructure, and processing routes of an Al–Cu–Mg–Ag–TiB2 (A205) alloy: Additive manufacturing and casting

Microstructure, mechanical properties and fracture mechanisms in a 7017 aluminium alloy tailored for powder bed fusion – laser beam

“…The resulting mechanical property of this alloy is quite promising too. In as-printed condition, the alloys show an upper yield point around 295 MPa, which is also observed in other grain refined Al-alloys processed via PBF-LB [6,33,36,37]. This upper yield point is followed by a load drop, thus leading to a possible Lüders band formation.…”

“…where this ratio is 0.80-0.90 in heat treated condition as compared to 0.96 in this alloy [1]. As per [36], such a phenomenon is attributed to refined grain structure which means that dislocation hardening via dislocation pileup during plastic deformation becomes ineffective due to high amount of grain boundaries. Overall, this performance seems to be better than conventionally produced 7017 Al-alloys with $ 20 % higher Young's modulus combined with a similar elongation to failure and competitive yield strength as other conventionally produced 7000-series Al-alloys [1,38].…”

Additive Manufacturing Enabled Synergetic Strengthening of Bimodal Reinforcing Particles for Aluminum Matrix Composites

“…From Fig. 1(b), the as-built TiB2/Al composite in this study exhibits a superior UTS than other reported as-built LPBF Al-Cu-Mg alloys (such as Al2024, A205 and Al2618 alloys) [24,[43][44][45] and their composites reinforced by TiB2 particulates [22,24,30,43,[46][47][48][49]. Furthermore, without heat treatment, the as-built TiB2/Al composite exhibits a higher UTS and a comparable elongation to failure, compared to the majority of T6 treated commercial wrought Al2618 alloys [37,38,45,[50][51][52][53][54][55].…”

Microstructure and molten pool morphology of TiB2/ AlSi7Mg composites fabricated by infrared-blue hybrid laser powder bed fusion

“…Compared with the other reinforcements, TiB 2 particle is preferred due to its high hardness, good thermodynamic stability, corrosion resistance, and chemical stability at high temperatures. Besides, there is no reaction between TiB 2 particles and components of Al alloy melt [ [7] , [8] , [9] ].…”