Effects of microalloying with La on microstructure and properties of cold rolled pure copper

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	Effects of microalloying with La on microstructure and properties of cold rolled pure copper
	Y.; Zhang Chen, S. H.; Cheng, M.; Song, H. W.; Xu, A. W.; Liu, J. S.
	2014
发表期刊	Materials Research Innovations
ISSN	1432-8917
卷号	18 页码:1121-1126
摘要	The microstructure and mechanical properties of pure copper with microalloying lanthanum (La) addition after cold rolling and subsequent aging were investigated. Tensile tests of the aged specimens were performed to examine the effect of aging temperature and microstructure on mechanical properties. Optical microscope, scanning electronic microscope and hardness tests were used to characterise the deformation and recrystallisation behaviour, as well as microstructure evolution in the alloys. The results show that the tensile strength increases gradually with increasing La concentration, but elongation increases at first and then decreases when the addition level of La is more than 0.089 wt-%. The improvement of properties of rolled copper with proper La addition is attributed to the effect of second particle strengthening and purifying. However, overaddition of La leads to the decrease of elongation of rolled copper owing to the excessive La rich second phase. In addition, an important finding was that when the content of La is less than 0.1 wt-%, recrystallisation was inhibited, while the content of La is more than 0.1 wt-%, recrystallisation was promoted.
部门归属	[chen, y. ; zhang, s. h. ; cheng, m. ; song, h. w. ; liu, j. s.] chinese acad sci, inst met res, shenyang 110016, peoples r china. [liu, j. s.] shenyang ligong univ, sch mat sci & engn, shenyang 110168, peoples r china. [xu, a. w.] guangdong longfeng precise tube co ltd, zhuhai 519045, peoples r china. ; zhang, sh (reprint author), chinese acad sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china. ; shzhang@imr.ac.cn
关键词	Rolled Pure Copper Microalloying Lanthanum Mechanical Property Recrystallisation 2nd Phase Particles Alloys Recrystallization Size Composites Strength Ag
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/321006/73777
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y.,Zhang Chen, S. H.,Cheng, M.,et al. Effects of microalloying with La on microstructure and properties of cold rolled pure copper[J]. Materials Research Innovations,2014,18:1121-1126.
APA	Y.,Zhang Chen, S. H.,Cheng, M.,Song, H. W.,Xu, A. W.,&Liu, J. S..(2014).Effects of microalloying with La on microstructure and properties of cold rolled pure copper.Materials Research Innovations,18,1121-1126.
MLA	Y.,et al."Effects of microalloying with La on microstructure and properties of cold rolled pure copper".Materials Research Innovations 18(2014):1121-1126.