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Effects of Small Amount Addition of Rare Earth Ce on Microstructure and Properties of Cast Pure Copper
Li, Hai-hong; Zhang, Shi-hong; Chen, Yan; Cheng, Ming; Song, Hong-wu; Liu, Jin-song; hhli12b@imr.ac.cn; shzhang@imr.ac.cn
2015
Source PublicationJOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
ISSN1059-9495
Volume24Issue:8Pages:2857-2865
AbstractThe effects of small amount addition of the rare-earth Ce on the microstructure, mechanical properties, and corrosion resistance behavior of cast pure copper were investigated using optical microscopy, scanning electron microscopy, energy-dispersive x-ray spectrometry (EDS), transmission electron microscopy (TEM), tensile testing, and potentiodynamic polarization measurements. It was indicated that Ce addition significantly refined the grain and enhanced the tensile strength of cast pure copper. Copper alloy with 0.12 wt.% Ce addition had the smallest equiaxed grains of 358. +/- A 23.53 mu m and the ultimate tensile strength of 181.7 +/- A 3.7 MPa. Ce formed spherical second phase particles with copper, which were revealed as Cu6Ce by EDS and TEM results. Solid solution strengthening, fine-grain strengthening, and second-phase precipitation strengthening played important roles in the tensile strength improvement. However, the elongation decreased due to the second phase particles' inhomogeneous distribution. The corrosion resistance properties of micro-alloyed copper alloys in 0.5 mol/L HCl solution were improved when Ce addition was limited to less than 0.069 wt.% owing to a purification effect and the formation of a compact corrosion product film on the copper matrix. The influencing mechanisms of Ce on the microstructure, mechanical property, and corrosion property were also discussed in detail.
description.department[li, hai-hong ; zhang, shi-hong ; chen, yan ; cheng, ming ; song, hong-wu ; liu, jin-song] chinese acad sci, inst met res, shenyang 110016, peoples r china ; [li, hai-hong] yantai univ, sch environm & mat engn, yantai 264005, peoples r china
KeywordCerium Corrosion Resistance Mechanical Property Microstructure Pure Copper
Funding OrganizationCAS Agenda to Provide S&T Support and Services for National Strategic Emerging Industries
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74794
Collection中国科学院金属研究所
Corresponding Authorhhli12b@imr.ac.cn; shzhang@imr.ac.cn
Recommended Citation
GB/T 7714
Li, Hai-hong,Zhang, Shi-hong,Chen, Yan,et al. Effects of Small Amount Addition of Rare Earth Ce on Microstructure and Properties of Cast Pure Copper[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,2015,24(8):2857-2865.
APA Li, Hai-hong.,Zhang, Shi-hong.,Chen, Yan.,Cheng, Ming.,Song, Hong-wu.,...&shzhang@imr.ac.cn.(2015).Effects of Small Amount Addition of Rare Earth Ce on Microstructure and Properties of Cast Pure Copper.JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,24(8),2857-2865.
MLA Li, Hai-hong,et al."Effects of Small Amount Addition of Rare Earth Ce on Microstructure and Properties of Cast Pure Copper".JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE 24.8(2015):2857-2865.
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