Microstructure observation of naturally aged thixoforming ZA27 alloy

doi:10.1590/1516-1439.050015

	Microstructure observation of naturally aged thixoforming ZA27 alloy
	Chen, Ti Jun; Zhao, Hai Jing; Ma, Ying; Hao, Yuan
刊名	Materials Research
	2015-11-01
卷号	18 期号:6 页码:1322-1330
关键词	Eutectics Ageing Direct growth Laminar structure Microstructure observation Naturally aged Particle forms Thixo-forming ZA27 alloys
ISSN号	15161439
DOI	10.1590/1516-1439.050015
英文摘要	The microstructure of the thixoformed ZA27 alloy naturally aged for 5 years has been observed and analyzed. The results indicate that most of the original ? + ? laminar eutectics have changed into the structures that small ? particles uniformly distribute in ? phase matrix. Both the ? phase and ?' phase have also decomposed. It is suggested that a continuous or dot-line ? phase first precipitates in the ? phase close to the eutectic ? phase layer. Then eutectoid ? phase nucleates or directly grows up from the eutectic ? phase, which promotes the nucleation of eutectoid ? phase or the direct growth of the ? phase from the existing ? phase. Subsequently, the resulting ? + ? phases grow towards the ? phase inside, forming the regular laminar ? + ? structures. The laminar structures always continuously grow across the center ?' phase, which leads the ?' phase also to transform into regular ? + ? laminar structures. The laminar structures may crack possibly due to internal stress. The eutectoid ? phase lamellae have a tendency of changing from laminar shape to particle form, resulting in the formation of non-laminar structures.
WOS研究方向	Materials Science
语种	英语
出版者	Universidade Federal de Sao Carlos
WOS记录号	WOS:000367150700023
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/112310]
专题	材料科学与工程学院
作者单位	State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Chen, Ti Jun,Zhao, Hai Jing,Ma, Ying,et al. Microstructure observation of naturally aged thixoforming ZA27 alloy[J]. Materials Research,2015,18(6):1322-1330.
APA	Chen, Ti Jun,Zhao, Hai Jing,Ma, Ying,&Hao, Yuan.(2015).Microstructure observation of naturally aged thixoforming ZA27 alloy.Materials Research,18(6),1322-1330.
MLA	Chen, Ti Jun,et al."Microstructure observation of naturally aged thixoforming ZA27 alloy".Materials Research 18.6(2015):1322-1330.