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. |
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