The influence of laser powder-bed fusion microstructures on the corrosion behavior of CuSn alloy

A review of the corrosion behavior of conventional and additively manufactured nickel–aluminum bronze (NAB) alloys: current status and future challenges

“…Specifically, the corrosion performance of L-PBF bronze with a partially recrystallized microstructure was found to be inferior to that of the fully crystallized specimen, due to the non-uniform distribution of dislocations in the former. 39 Pseudo-passive behavior of L-PBFed Cu-10Sn alloy in saline solution was also observed in the polarization curve. 40…”

“…Specifically, the corrosion performance of L-PBF bronze with a partially recrystallized microstructure was found to be inferior to that of the fully crystallized specimen, due to the non-uniform distribution of dislocations in the former. 39 Pseudo-passive behavior of L-PBFed Cu-10Sn alloy in saline solution was also observed in the polarization curve. 40 The potential for producing composite materials using AM techniques was explored in a study where binder-jet printing (BJP) was successfully used to fabricate a composite material of bronze-infiltrated binder jetted 316 stainless steel (BJP316).…”

“…From the analysis of Table 11, it is evident that heat-treating Cu-Sn alloys processed via AM boosted their corrosion resistance. 38,39 This improvement was attributed to coarser grains and uniformly distributed dislocations in heat-treated AMed Cu-Sn alloys compared to as-built counterparts. Similarly, Cu-Sn/316SS composite materials produced using BJP possessed superior tribocorrosion resistance compared to traditional 316 SS, which was inferred from the lubrication effect during the experiments for the composite material.…”

“…Similar findings were reported in a research study that also utilized L-PBF to fabricate Cu–Sn alloys. 39 Heat treatment was found to be beneficial in improving the corrosion resistance of L-PBF produced Cu–Sn alloy, which was critically dependent on the dislocation density and its distribution. Specifically, the corrosion performance of L-PBF bronze with a partially recrystallized microstructure was found to be inferior to that of the fully crystallized specimen, due to the non-uniform distribution of dislocations in the former.…”

“…34,37 This is consistent with the limited available research studies regarding the corrosion characteristics of AMed copper-based alloys. [38][39][40][41][42][43][44][45][46][47][48] Thus, the following discussions aim to provide a concise overview of AM technologies that have been utilized in previously published reports dealing with the corrosion properties of AMed NABs and other 3D printed Cu-based alloys.…”