Effects of lanthanum addition on microstructure and mechanical properties of as-cast pure copper

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	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
	2014
发表期刊	Journal of Rare Earths
ISSN	1002-0721
卷号	32 期号:11 页码:1056-1063
摘要	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.
部门归属	[chen yan ; 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. ; shzhang@imr.ac.cn
关键词	As-cast Pure Copper La Microstructure Mechanical Property Rare Earths Directional Solidification Equiaxed Transition Aluminum-alloy La Addition Zr Alloys Columnar Fragmentation Elements Ce
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/73199
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	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.
APA	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.
MLA	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.