TY - JOUR
T1 - Influence of Cu addition on corrosion behavior and tensile performance of Ni-30Co-16Cr-15Mo-6Fe alloy
AU - Yang, Biaobiao
AU - Hou, Yuhang
AU - Lei, Qian
AU - Li, Yunping
AU - Chiba, Akihiko
N1 - Funding Information:
This investigation is supported by the grant from the National Science and Technology Major Project ( 2017-VI-0008-0078 ), Natural Science Foundation of China ( 51871244 ), the Guangdong Innovative and Entrepreneurial Research Team Program ( 201301G0105337290 ), and the Special Funds for Future Industrial Development of Shenzhen (No. HKHTZD20140702020004 ).
Funding Information:
This investigation is supported by the grant from the National Science and Technology Major Project (2017-VI-0008-0078), Natural Science Foundation of China (51871244), the Guangdong Innovative and Entrepreneurial Research Team Program (201301G0105337290), and the Special Funds for Future Industrial Development of Shenzhen (No. HKHTZD20140702020004).
Publisher Copyright:
© 2020 Elsevier Inc.
PY - 2020/3
Y1 - 2020/3
N2 - Corrosion behavior in 5.2 M aqueous hydrofluoric acid solution and tensile properties of Ni-30Co-16Cr-15Mo-6Fe-xCu (x = 0, 0.5, 2, and 6) (mass%) alloys are investigated. The corrosion resistance of alloy can be significantly improved by the slight additions of Cu (e.g. 0–2 mass%) without altering either the microstructure or the tensile properties of alloy. On the contrary, alloy with higher addition of Cu, characterized by Cu-rich phases both at grain boundaries and inside the matrix, demonstrates lower corrosion resistance and lower tensile strength. Interestingly, corrosion resistance in grain boundary of alloy gradually increases with Cu content increasing irrespective of the appearance of Cu-rich phases.
AB - Corrosion behavior in 5.2 M aqueous hydrofluoric acid solution and tensile properties of Ni-30Co-16Cr-15Mo-6Fe-xCu (x = 0, 0.5, 2, and 6) (mass%) alloys are investigated. The corrosion resistance of alloy can be significantly improved by the slight additions of Cu (e.g. 0–2 mass%) without altering either the microstructure or the tensile properties of alloy. On the contrary, alloy with higher addition of Cu, characterized by Cu-rich phases both at grain boundaries and inside the matrix, demonstrates lower corrosion resistance and lower tensile strength. Interestingly, corrosion resistance in grain boundary of alloy gradually increases with Cu content increasing irrespective of the appearance of Cu-rich phases.
KW - Corrosion
KW - Cu
KW - Cu-rich phases
KW - Grain boundary corrosion resistance
KW - Tensile properties
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U2 - 10.1016/j.matchar.2020.110140
DO - 10.1016/j.matchar.2020.110140
M3 - Article
AN - SCOPUS:85078507897
SN - 1044-5803
VL - 161
JO - Materials Characterization
JF - Materials Characterization
M1 - 110140
ER -