TY - JOUR
T1 - Surface hardness improvement of Al via inserting ceramic powders by ultrasonic mechanical coating and armoring with subsequent annealing
AU - Chuang, W.S.
AU - Cai, Y.C.
AU - Huang, J.C.
AU - Tsai, W.Y.
AU - Wang, K.K.
AU - Chen, C.F.
AU - Du, X.H.
PY - 2018/4/25
Y1 - 2018/4/25
N2 - In this study, ultrasonic mechanical coating and armoring (UMCA) with subsequent annealing is applied to improve surface hardness of Al. The micro-scaled CuO powders are bombarded and inserted into Al by UMCA, leading to the increment in surface hardness by 6 times. The grain refinement, work hardening and dispersion hardening are contributed to surface hardening. Moreover, the reaction temperature between CuO and Al can be reduced by severe UMCA process. Thus, after UMCA and subsequent annealing at 500 °C, the surface hardness can be increased by 10 times, which can mainly refer to the dispersion strengthening caused by transformed nano-size Cu2O.
AB - In this study, ultrasonic mechanical coating and armoring (UMCA) with subsequent annealing is applied to improve surface hardness of Al. The micro-scaled CuO powders are bombarded and inserted into Al by UMCA, leading to the increment in surface hardness by 6 times. The grain refinement, work hardening and dispersion hardening are contributed to surface hardening. Moreover, the reaction temperature between CuO and Al can be reduced by severe UMCA process. Thus, after UMCA and subsequent annealing at 500 °C, the surface hardness can be increased by 10 times, which can mainly refer to the dispersion strengthening caused by transformed nano-size Cu2O.
KW - Al alloy
KW - Dispersion strengthening
KW - Hardness
KW - Ultrasonic mechanical coating and armoring
UR - http://www.scopus.com/inward/record.url?scp=85042466733&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85042466733&origin=recordpage
U2 - 10.1016/j.surfcoat.2018.02.061
DO - 10.1016/j.surfcoat.2018.02.061
M3 - RGC 21 - Publication in refereed journal
SN - 0257-8972
VL - 340
SP - 145
EP - 150
JO - Surface and Coatings Technology
JF - Surface and Coatings Technology
ER -