In Situ Observation of the Zr Poisoning Effect in Al Alloys Inoculated by Al-Ti-B
文献类型：期刊论文
| 作者 | Jia, YW; Wang, SB; Huang, HJ; Wang, DH; Fu, YN; Zhu, GL; Dong, AP; Du, DF; Shu, D; Sun, BD |
| 刊名 | METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
 |
| 出版日期 | 2018 |
| 卷号 | 49A期号:10页码:4771-4784 |
| 关键词 | SYNCHROTRON X-RAY GRAIN-REFINEMENT ALUMINUM-ALLOYS DIRECTIONAL SOLIDIFICATION HETEROGENEOUS NUCLEATION EQUIAXED TRANSITION DENDRITE GROWTH CU ALLOYS SITU RADIOGRAPHY |
| ISSN号 | 1073-5623 |
| DOI | 10.1007/s11661-018-4834-6 |
| 文献子类 | 期刊论文 |
| 英文摘要 | In situ synchrotron X-ray radiography observations of the Zr-poisoning phenomenon of an Al-20 wt pct Zn alloy inoculated by Al-5Ti-1B were carried out. The effects of Zr addition on heterogeneous nucleation, grain growth, and final grain size were quantitatively studied and further analyzed using the interdependence model. The experimental results show that the undercooling needed for nucleation increases and the nucleation rate decreases at the early stage of solidification with Zr addition, resulting in fast grain growth, a high solidification rate and increased severity of solute segregation in the solid-liquid coexistence regions. At the same time, the poisoning is a progressive process that is enhanced with the increasing Zr content, holding temperature, and holding time. The nucleation-free zone of the Zr-containing sample, either measured from the radiographs or calculated by the interdependency theory, is larger than that of the Zr-free sample. Our analysis shows that both the increase in the nucleation-free zone and the average interparticle spacing of the most potent available nucleation particles contribute to the increase of the grain size caused by Zr poisoning. (C) The Minerals, Metals & Materials Society and ASM International 2018 |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/30987]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai Key Lab Adv High Temp Mat & Precis Formi, Shanghai 200240, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China 3.Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China 4.Shanghai Jiao Tong Univ, Mat Genome Initiat Ctr, Shanghai 200240, Peoples R China 5.Shanghai Innovat Inst Mat, Shanghai 200444, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jia, YW,Wang, SB,Huang, HJ,et al. In Situ Observation of the Zr Poisoning Effect in Al Alloys Inoculated by Al-Ti-B[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2018,49A(10):4771-4784. |
| APA | Jia, YW.,Wang, SB.,Huang, HJ.,Wang, DH.,Fu, YN.,...&Sun, BD.(2018).In Situ Observation of the Zr Poisoning Effect in Al Alloys Inoculated by Al-Ti-B.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,49A(10),4771-4784. |
| MLA | Jia, YW,et al."In Situ Observation of the Zr Poisoning Effect in Al Alloys Inoculated by Al-Ti-B".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 49A.10(2018):4771-4784. |
入库方式： OAI收割
来源：上海应用物理研究所
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