|Effects of lanthanum addition on microstructure and mechanical properties of as-cast pure copper|
|Y. Chen; M. Cheng; H. W. Song; S. H. Zhang; J. S. Liu; Y. Zhu
|Source Publication||Journal of Rare Earths
|Abstract||As-cast Cu-La alloys with La contents in the range of 0-0.32 wt.% were fabricated by vacuum melting method. The effects of La on microstructure and mechanical properties of as-cast pure copper were investigated using optical microscopy (OM), scanning electronic microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and tensile test. The results showed that La had obvious effects on the solidification microstructure and the grain refinement of as-cast pure copper. With the increase of La content, the ultimate tensile strength, the yield strength and the microhardness increased gradually, but the elongation increased first and then decreased while La content exceeded 0.089 wt.%. The improvement of mechanical properties was attributed to the effect of grain refinement strengthening, solid solution strengthening, second phase strengthening and purifying. However, excessive adding La would deteriorate the elongation owing to the excessive Cu6La phases.|
; cheng ming
; song hongwu
; zhang shihong] chinese acad sci, inst met res, shenyang 110016, peoples r china. [liu jinsong] shenyang ligong univ, sch mat sci & engn, shenyang 110168, peoples r china. [zhu yan] guangdong longfeng precise tube co ltd, zhuhai 519045, peoples r china.
; zhang, sh (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china.
|Keyword||As-cast Pure Copper
Y. Chen,M. Cheng,H. W. Song,et al. Effects of lanthanum addition on microstructure and mechanical properties of as-cast pure copper[J]. Journal of Rare Earths,2014,32(11):1056-1063.
Y. Chen,M. Cheng,H. W. Song,S. H. Zhang,J. S. Liu,&Y. Zhu.(2014).Effects of lanthanum addition on microstructure and mechanical properties of as-cast pure copper.Journal of Rare Earths,32(11),1056-1063.
Y. Chen,et al."Effects of lanthanum addition on microstructure and mechanical properties of as-cast pure copper".Journal of Rare Earths 32.11(2014):1056-1063.
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