TY - GEN
T1 - Influence of processing parameters on the induction sintering of copper powder metal
AU - Waryoba, Daudi
PY - 2018/1/1
Y1 - 2018/1/1
N2 - Induction sintering is not new in the powder metal (PM) industry. However, this method has hardly been used for sintering powders admixed with lubricants. In this study induction heating was used to sinter two variants of copper powder admixed with Acrawax, one with uniform particle size of 25µm and the other with a bimodal distribution of 20 urn and 60 urn particle sizes. Two heating rates and two dwell times were used to investigate the effects of processing parameters on the microstructure and mechanical properties of these two types of powders. The results show that induction sintering is a potential sintering method for powder metal parts, however, optimal processing parameters/ conditions such as temperature, heating rate, sintering time, have to be determined to ensure the parts are sintered properly. Induction sintering for 6 min at a rate of 100°C/min developed a microstructure that had fewer pore density by -50% less than conventionally sintered parts. The corresponding microhardness was as high as -17% higher than that of conventionally sintered parts. On the other hand, rapid heating cause poor sinterability, and unequal-sized powder promote coarsening and hot spots.
AB - Induction sintering is not new in the powder metal (PM) industry. However, this method has hardly been used for sintering powders admixed with lubricants. In this study induction heating was used to sinter two variants of copper powder admixed with Acrawax, one with uniform particle size of 25µm and the other with a bimodal distribution of 20 urn and 60 urn particle sizes. Two heating rates and two dwell times were used to investigate the effects of processing parameters on the microstructure and mechanical properties of these two types of powders. The results show that induction sintering is a potential sintering method for powder metal parts, however, optimal processing parameters/ conditions such as temperature, heating rate, sintering time, have to be determined to ensure the parts are sintered properly. Induction sintering for 6 min at a rate of 100°C/min developed a microstructure that had fewer pore density by -50% less than conventionally sintered parts. The corresponding microhardness was as high as -17% higher than that of conventionally sintered parts. On the other hand, rapid heating cause poor sinterability, and unequal-sized powder promote coarsening and hot spots.
UR - http://www.scopus.com/inward/record.url?scp=85072825287&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85072825287&partnerID=8YFLogxK
M3 - Conference contribution
T3 - Advances in Powder Metallurgy and Particulate Materials - 2018: Proceedings of the 2018 International Conference on Powder Metallurgy and Particulate Material, POWDERMET 2018
SP - 316
EP - 327
BT - Advances in Powder Metallurgy and Particulate Materials - 2018
PB - Metal Powder Industries Federation
T2 - 2018 International Conference on Powder Metallurgy and Particulate Material, POWDERMET 2018
Y2 - 17 June 2018 through 20 June 2018
ER -